/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 23:38:18,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 23:38:18,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 23:38:18,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 23:38:18,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 23:38:18,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 23:38:18,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 23:38:18,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 23:38:18,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 23:38:18,583 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 23:38:18,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 23:38:18,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 23:38:18,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 23:38:18,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 23:38:18,586 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 23:38:18,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 23:38:18,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 23:38:18,586 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 23:38:18,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 23:38:18,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 23:38:18,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 23:38:18,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 23:38:18,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 23:38:18,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 23:38:18,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 23:38:18,588 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 23:38:18,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 23:38:18,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 23:38:18,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 23:38:18,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 23:38:18,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 23:38:18,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 23:38:18,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:38:18,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 23:38:18,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 23:38:18,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 23:38:18,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 23:38:18,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 23:38:18,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 23:38:18,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 23:38:18,591 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 23:38:18,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 23:38:18,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 23:38:18,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 23:38:18,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 23:38:18,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 23:38:18,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 23:38:18,807 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 23:38:18,807 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 23:38:18,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c [2023-12-19 23:38:19,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 23:38:20,025 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 23:38:20,026 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c [2023-12-19 23:38:20,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d73afb89/46bbced4274b4bf58f9c78576d5e43b1/FLAG9c22c1711 [2023-12-19 23:38:20,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d73afb89/46bbced4274b4bf58f9c78576d5e43b1 [2023-12-19 23:38:20,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 23:38:20,062 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 23:38:20,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 23:38:20,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 23:38:20,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 23:38:20,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b38294d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20, skipping insertion in model container [2023-12-19 23:38:20,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,118 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 23:38:20,316 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_spec2_product51.cil.c[9329,9342] [2023-12-19 23:38:20,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:38:20,377 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 23:38:20,383 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [49] [2023-12-19 23:38:20,387 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [121] [2023-12-19 23:38:20,387 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [343] [2023-12-19 23:38:20,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [383] [2023-12-19 23:38:20,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [421] [2023-12-19 23:38:20,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [525] [2023-12-19 23:38:20,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [622] [2023-12-19 23:38:20,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [631] [2023-12-19 23:38:20,408 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_spec2_product51.cil.c[9329,9342] [2023-12-19 23:38:20,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:38:20,457 INFO L206 MainTranslator]: Completed translation [2023-12-19 23:38:20,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20 WrapperNode [2023-12-19 23:38:20,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 23:38:20,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 23:38:20,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 23:38:20,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 23:38:20,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,508 INFO L138 Inliner]: procedures = 57, calls = 101, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 209 [2023-12-19 23:38:20,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 23:38:20,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 23:38:20,509 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 23:38:20,509 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 23:38:20,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,534 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]. [2023-12-19 23:38:20,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 23:38:20,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 23:38:20,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 23:38:20,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 23:38:20,545 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (1/1) ... [2023-12-19 23:38:20,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:38:20,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:38:20,593 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) [2023-12-19 23:38:20,605 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 [2023-12-19 23:38:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 23:38:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-19 23:38:20,615 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-19 23:38:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-12-19 23:38:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-12-19 23:38:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 23:38:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 23:38:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 23:38:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 23:38:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-19 23:38:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-19 23:38:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-19 23:38:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-19 23:38:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-19 23:38:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-19 23:38:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 23:38:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-19 23:38:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-19 23:38:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 23:38:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 23:38:20,682 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 23:38:20,684 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 23:38:20,936 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 23:38:21,007 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 23:38:21,007 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 23:38:21,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:38:21 BoogieIcfgContainer [2023-12-19 23:38:21,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 23:38:21,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 23:38:21,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 23:38:21,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 23:38:21,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:38:20" (1/3) ... [2023-12-19 23:38:21,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35770183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:38:21, skipping insertion in model container [2023-12-19 23:38:21,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:38:20" (2/3) ... [2023-12-19 23:38:21,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35770183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:38:21, skipping insertion in model container [2023-12-19 23:38:21,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:38:21" (3/3) ... [2023-12-19 23:38:21,013 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product51.cil.c [2023-12-19 23:38:21,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 23:38:21,025 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 23:38:21,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 23:38:21,069 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;@40fccf6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 23:38:21,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 23:38:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 60 states have internal predecessors, (79), 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) [2023-12-19 23:38:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-19 23:38:21,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:21,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:38:21,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:21,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1806575673, now seen corresponding path program 1 times [2023-12-19 23:38:21,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:21,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455333445] [2023-12-19 23:38:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:21,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:21,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 23:38:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:38:21,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:21,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455333445] [2023-12-19 23:38:21,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455333445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:21,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:38:21,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 23:38:21,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698080211] [2023-12-19 23:38:21,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:21,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 23:38:21,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:21,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 23:38:21,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 23:38:21,303 INFO L87 Difference]: Start difference. First operand has 74 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 60 states have internal predecessors, (79), 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 6.5) internal successors, (13), 2 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) [2023-12-19 23:38:21,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:21,359 INFO L93 Difference]: Finished difference Result 146 states and 211 transitions. [2023-12-19 23:38:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 23:38:21,364 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 [2023-12-19 23:38:21,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:21,370 INFO L225 Difference]: With dead ends: 146 [2023-12-19 23:38:21,371 INFO L226 Difference]: Without dead ends: 69 [2023-12-19 23:38:21,373 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 [2023-12-19 23:38:21,376 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:21,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:38:21,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-19 23:38:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-19 23:38:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.4375) internal successors, (69), 56 states have internal predecessors, (69), 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) [2023-12-19 23:38:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2023-12-19 23:38:21,406 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 17 [2023-12-19 23:38:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:21,406 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2023-12-19 23:38:21,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2023-12-19 23:38:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2023-12-19 23:38:21,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 23:38:21,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:21,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:38:21,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 23:38:21,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:21,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:21,409 INFO L85 PathProgramCache]: Analyzing trace with hash 728868096, now seen corresponding path program 1 times [2023-12-19 23:38:21,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:21,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119254518] [2023-12-19 23:38:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:21,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:21,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 23:38:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:38:21,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:21,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119254518] [2023-12-19 23:38:21,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119254518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:21,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:38:21,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 23:38:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780994444] [2023-12-19 23:38:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:21,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:38:21,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:38:21,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 23:38:21,496 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-19 23:38:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:21,523 INFO L93 Difference]: Finished difference Result 108 states and 146 transitions. [2023-12-19 23:38:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:38:21,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 18 [2023-12-19 23:38:21,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:21,527 INFO L225 Difference]: With dead ends: 108 [2023-12-19 23:38:21,527 INFO L226 Difference]: Without dead ends: 61 [2023-12-19 23:38:21,528 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 [2023-12-19 23:38:21,529 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 14 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:21,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 125 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:38:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-19 23:38:21,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-19 23:38:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 51 states have internal predecessors, (63), 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) [2023-12-19 23:38:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2023-12-19 23:38:21,536 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 18 [2023-12-19 23:38:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:21,537 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2023-12-19 23:38:21,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-19 23:38:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2023-12-19 23:38:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 23:38:21,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:21,538 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] [2023-12-19 23:38:21,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 23:38:21,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:21,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash -909548454, now seen corresponding path program 1 times [2023-12-19 23:38:21,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:21,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460464630] [2023-12-19 23:38:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:21,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:21,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 23:38:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:38:21,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:21,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460464630] [2023-12-19 23:38:21,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460464630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:21,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:38:21,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 23:38:21,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798460779] [2023-12-19 23:38:21,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:21,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 23:38:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:21,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 23:38:21,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 23:38:21,642 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-12-19 23:38:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:21,750 INFO L93 Difference]: Finished difference Result 172 states and 240 transitions. [2023-12-19 23:38:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 23:38:21,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 21 [2023-12-19 23:38:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:21,757 INFO L225 Difference]: With dead ends: 172 [2023-12-19 23:38:21,757 INFO L226 Difference]: Without dead ends: 113 [2023-12-19 23:38:21,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 23:38:21,764 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 96 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:21,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 195 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:38:21,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-19 23:38:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 96. [2023-12-19 23:38:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 79 states have internal predecessors, (100), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (16), 11 states have call predecessors, (16), 15 states have call successors, (16) [2023-12-19 23:38:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 131 transitions. [2023-12-19 23:38:21,781 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 131 transitions. Word has length 21 [2023-12-19 23:38:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:21,781 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 131 transitions. [2023-12-19 23:38:21,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-12-19 23:38:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 131 transitions. [2023-12-19 23:38:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 23:38:21,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:21,782 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] [2023-12-19 23:38:21,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 23:38:21,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:21,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash 443587463, now seen corresponding path program 1 times [2023-12-19 23:38:21,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:21,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537212488] [2023-12-19 23:38:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:21,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 23:38:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:38:21,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537212488] [2023-12-19 23:38:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537212488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:21,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:38:21,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 23:38:21,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567457994] [2023-12-19 23:38:21,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:21,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 23:38:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 23:38:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 23:38:21,847 INFO L87 Difference]: Start difference. First operand 96 states and 131 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-12-19 23:38:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:21,931 INFO L93 Difference]: Finished difference Result 224 states and 312 transitions. [2023-12-19 23:38:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:38:21,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 24 [2023-12-19 23:38:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:21,933 INFO L225 Difference]: With dead ends: 224 [2023-12-19 23:38:21,933 INFO L226 Difference]: Without dead ends: 130 [2023-12-19 23:38:21,937 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 [2023-12-19 23:38:21,938 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 56 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:21,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 190 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:38:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-19 23:38:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2023-12-19 23:38:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 100 states have internal predecessors, (124), 18 states have call successors, (18), 17 states have call predecessors, (18), 17 states have return successors, (24), 17 states have call predecessors, (24), 18 states have call successors, (24) [2023-12-19 23:38:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 166 transitions. [2023-12-19 23:38:21,957 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 166 transitions. Word has length 24 [2023-12-19 23:38:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:21,957 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 166 transitions. [2023-12-19 23:38:21,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-12-19 23:38:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 166 transitions. [2023-12-19 23:38:21,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-19 23:38:21,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:21,959 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] [2023-12-19 23:38:21,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 23:38:21,959 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:21,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:21,960 INFO L85 PathProgramCache]: Analyzing trace with hash -783823815, now seen corresponding path program 1 times [2023-12-19 23:38:21,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:21,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381244526] [2023-12-19 23:38:21,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:21,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 23:38:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 23:38:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:38:22,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:22,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381244526] [2023-12-19 23:38:22,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381244526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:22,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:38:22,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 23:38:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877478679] [2023-12-19 23:38:22,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:22,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 23:38:22,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 23:38:22,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 23:38:22,055 INFO L87 Difference]: Start difference. First operand 126 states and 166 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 23:38:22,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:22,194 INFO L93 Difference]: Finished difference Result 249 states and 336 transitions. [2023-12-19 23:38:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:38:22,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2023-12-19 23:38:22,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:22,200 INFO L225 Difference]: With dead ends: 249 [2023-12-19 23:38:22,201 INFO L226 Difference]: Without dead ends: 247 [2023-12-19 23:38:22,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 23:38:22,203 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 137 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:22,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 132 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:38:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-19 23:38:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 224. [2023-12-19 23:38:22,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 160 states have (on average 1.36875) internal successors, (219), 176 states have internal predecessors, (219), 32 states have call successors, (32), 27 states have call predecessors, (32), 31 states have return successors, (56), 31 states have call predecessors, (56), 32 states have call successors, (56) [2023-12-19 23:38:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 307 transitions. [2023-12-19 23:38:22,249 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 307 transitions. Word has length 33 [2023-12-19 23:38:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:22,250 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 307 transitions. [2023-12-19 23:38:22,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 23:38:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 307 transitions. [2023-12-19 23:38:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 23:38:22,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:22,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:38:22,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 23:38:22,253 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:22,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:22,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1243267933, now seen corresponding path program 1 times [2023-12-19 23:38:22,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:22,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516823562] [2023-12-19 23:38:22,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:22,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 23:38:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:38:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 23:38:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 23:38:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:38:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:38:22,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:22,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516823562] [2023-12-19 23:38:22,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516823562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:22,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:38:22,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:38:22,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734799009] [2023-12-19 23:38:22,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:22,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:38:22,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:22,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:38:22,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:38:22,358 INFO L87 Difference]: Start difference. First operand 224 states and 307 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 23:38:22,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:22,583 INFO L93 Difference]: Finished difference Result 498 states and 689 transitions. [2023-12-19 23:38:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 23:38:22,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 68 [2023-12-19 23:38:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:22,586 INFO L225 Difference]: With dead ends: 498 [2023-12-19 23:38:22,587 INFO L226 Difference]: Without dead ends: 234 [2023-12-19 23:38:22,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:38:22,589 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 209 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:22,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 188 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:38:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-19 23:38:22,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 183. [2023-12-19 23:38:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 132 states have (on average 1.3409090909090908) internal successors, (177), 143 states have internal predecessors, (177), 24 states have call successors, (24), 21 states have call predecessors, (24), 26 states have return successors, (42), 25 states have call predecessors, (42), 24 states have call successors, (42) [2023-12-19 23:38:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 243 transitions. [2023-12-19 23:38:22,629 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 243 transitions. Word has length 68 [2023-12-19 23:38:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:22,631 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 243 transitions. [2023-12-19 23:38:22,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 23:38:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 243 transitions. [2023-12-19 23:38:22,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 23:38:22,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:22,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:38:22,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 23:38:22,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:22,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1609030576, now seen corresponding path program 1 times [2023-12-19 23:38:22,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:22,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986149555] [2023-12-19 23:38:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:22,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 23:38:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:38:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 23:38:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 23:38:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 23:38:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 23:38:22,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:22,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986149555] [2023-12-19 23:38:22,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986149555] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:38:22,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332194079] [2023-12-19 23:38:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:22,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:38:22,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:38:22,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:38:22,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 23:38:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:22,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 23:38:22,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:38:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:38:22,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:38:22,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332194079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:22,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:38:22,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-12-19 23:38:22,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735877771] [2023-12-19 23:38:22,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:22,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:38:22,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:38:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:38:22,972 INFO L87 Difference]: Start difference. First operand 183 states and 243 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 23:38:23,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:23,006 INFO L93 Difference]: Finished difference Result 340 states and 453 transitions. [2023-12-19 23:38:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:38:23,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 65 [2023-12-19 23:38:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:23,008 INFO L225 Difference]: With dead ends: 340 [2023-12-19 23:38:23,008 INFO L226 Difference]: Without dead ends: 159 [2023-12-19 23:38:23,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:38:23,010 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 37 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:23,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 133 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:38:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-19 23:38:23,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-19 23:38:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 124 states have internal predecessors, (147), 21 states have call successors, (21), 19 states have call predecessors, (21), 23 states have return successors, (28), 22 states have call predecessors, (28), 21 states have call successors, (28) [2023-12-19 23:38:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 196 transitions. [2023-12-19 23:38:23,023 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 196 transitions. Word has length 65 [2023-12-19 23:38:23,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:23,024 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 196 transitions. [2023-12-19 23:38:23,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 23:38:23,024 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 196 transitions. [2023-12-19 23:38:23,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 23:38:23,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:23,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:38:23,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 23:38:23,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:38:23,234 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:23,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash -887067055, now seen corresponding path program 1 times [2023-12-19 23:38:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:23,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817587150] [2023-12-19 23:38:23,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:23,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 23:38:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:38:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 23:38:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 23:38:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:38:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:38:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 23:38:23,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:23,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817587150] [2023-12-19 23:38:23,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817587150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:38:23,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978992416] [2023-12-19 23:38:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:23,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:38:23,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:38:23,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:38:23,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 23:38:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 23:38:23,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:38:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:38:23,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:38:23,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978992416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:23,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:38:23,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-12-19 23:38:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722089096] [2023-12-19 23:38:23,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:23,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 23:38:23,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:23,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 23:38:23,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:38:23,516 INFO L87 Difference]: Start difference. First operand 159 states and 196 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-19 23:38:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:23,545 INFO L93 Difference]: Finished difference Result 322 states and 403 transitions. [2023-12-19 23:38:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 23:38:23,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2023-12-19 23:38:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:23,546 INFO L225 Difference]: With dead ends: 322 [2023-12-19 23:38:23,546 INFO L226 Difference]: Without dead ends: 165 [2023-12-19 23:38:23,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:38:23,548 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 1 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:23,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 189 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:38:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-19 23:38:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2023-12-19 23:38:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 116 states have (on average 1.2844827586206897) internal successors, (149), 126 states have internal predecessors, (149), 21 states have call successors, (21), 19 states have call predecessors, (21), 23 states have return successors, (28), 22 states have call predecessors, (28), 21 states have call successors, (28) [2023-12-19 23:38:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 198 transitions. [2023-12-19 23:38:23,560 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 198 transitions. Word has length 68 [2023-12-19 23:38:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:23,561 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 198 transitions. [2023-12-19 23:38:23,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-19 23:38:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 198 transitions. [2023-12-19 23:38:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 23:38:23,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:23,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:38:23,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 23:38:23,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 23:38:23,768 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:23,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1309768881, now seen corresponding path program 1 times [2023-12-19 23:38:23,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:23,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660889590] [2023-12-19 23:38:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:23,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 23:38:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:38:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 23:38:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 23:38:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:38:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:38:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:38:23,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660889590] [2023-12-19 23:38:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660889590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:38:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422378705] [2023-12-19 23:38:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:23,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:38:23,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:38:23,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:38:23,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 23:38:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:23,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 23:38:23,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:38:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:38:23,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:38:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422378705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:23,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:38:23,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-19 23:38:23,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370818036] [2023-12-19 23:38:23,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:23,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 23:38:23,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:23,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 23:38:23,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:38:23,999 INFO L87 Difference]: Start difference. First operand 161 states and 198 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 23:38:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:24,026 INFO L93 Difference]: Finished difference Result 322 states and 400 transitions. [2023-12-19 23:38:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 23:38:24,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-12-19 23:38:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:24,027 INFO L225 Difference]: With dead ends: 322 [2023-12-19 23:38:24,028 INFO L226 Difference]: Without dead ends: 163 [2023-12-19 23:38:24,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:38:24,030 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 2 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:24,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 192 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:38:24,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-19 23:38:24,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-12-19 23:38:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 118 states have (on average 1.2796610169491525) internal successors, (151), 128 states have internal predecessors, (151), 21 states have call successors, (21), 19 states have call predecessors, (21), 23 states have return successors, (28), 22 states have call predecessors, (28), 21 states have call successors, (28) [2023-12-19 23:38:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 200 transitions. [2023-12-19 23:38:24,039 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 200 transitions. Word has length 68 [2023-12-19 23:38:24,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:24,040 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 200 transitions. [2023-12-19 23:38:24,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 23:38:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 200 transitions. [2023-12-19 23:38:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 23:38:24,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:24,043 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:38:24,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 23:38:24,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:38:24,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:24,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:24,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1790849139, now seen corresponding path program 1 times [2023-12-19 23:38:24,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:24,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974334777] [2023-12-19 23:38:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:24,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 23:38:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:38:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 23:38:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 23:38:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:38:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:38:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:38:24,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974334777] [2023-12-19 23:38:24,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974334777] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:38:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790551557] [2023-12-19 23:38:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:24,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:38:24,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:38:24,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:38:24,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 23:38:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 23:38:24,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:38:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:38:24,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:38:24,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790551557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:24,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:38:24,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-19 23:38:24,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979904337] [2023-12-19 23:38:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:24,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 23:38:24,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:24,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 23:38:24,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:38:24,454 INFO L87 Difference]: Start difference. First operand 163 states and 200 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 23:38:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:24,488 INFO L93 Difference]: Finished difference Result 331 states and 412 transitions. [2023-12-19 23:38:24,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 23:38:24,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-12-19 23:38:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:24,489 INFO L225 Difference]: With dead ends: 331 [2023-12-19 23:38:24,489 INFO L226 Difference]: Without dead ends: 170 [2023-12-19 23:38:24,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:38:24,490 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 6 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:24,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 190 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:38:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-19 23:38:24,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 165. [2023-12-19 23:38:24,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 120 states have (on average 1.275) internal successors, (153), 130 states have internal predecessors, (153), 21 states have call successors, (21), 19 states have call predecessors, (21), 23 states have return successors, (28), 22 states have call predecessors, (28), 21 states have call successors, (28) [2023-12-19 23:38:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 202 transitions. [2023-12-19 23:38:24,500 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 202 transitions. Word has length 68 [2023-12-19 23:38:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:24,501 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 202 transitions. [2023-12-19 23:38:24,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 23:38:24,501 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 202 transitions. [2023-12-19 23:38:24,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 23:38:24,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:24,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:38:24,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 23:38:24,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:38:24,710 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:24,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash -252509109, now seen corresponding path program 1 times [2023-12-19 23:38:24,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:24,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496667366] [2023-12-19 23:38:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:24,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 23:38:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:38:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 23:38:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 23:38:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:38:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:38:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:38:24,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:24,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496667366] [2023-12-19 23:38:24,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496667366] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:38:24,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896523606] [2023-12-19 23:38:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:24,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:38:24,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:38:24,820 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:38:24,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 23:38:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:24,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 23:38:24,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:38:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:38:24,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:38:24,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896523606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:24,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:38:24,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2023-12-19 23:38:24,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8382400] [2023-12-19 23:38:24,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:24,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:38:24,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:24,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:38:24,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:38:24,954 INFO L87 Difference]: Start difference. First operand 165 states and 202 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-19 23:38:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:25,121 INFO L93 Difference]: Finished difference Result 532 states and 698 transitions. [2023-12-19 23:38:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:38:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-12-19 23:38:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:25,124 INFO L225 Difference]: With dead ends: 532 [2023-12-19 23:38:25,124 INFO L226 Difference]: Without dead ends: 369 [2023-12-19 23:38:25,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:38:25,125 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 146 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:25,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 207 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:38:25,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-12-19 23:38:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2023-12-19 23:38:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 284 states have internal predecessors, (337), 51 states have call successors, (51), 50 states have call predecessors, (51), 48 states have return successors, (80), 48 states have call predecessors, (80), 51 states have call successors, (80) [2023-12-19 23:38:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 468 transitions. [2023-12-19 23:38:25,150 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 468 transitions. Word has length 68 [2023-12-19 23:38:25,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:25,150 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 468 transitions. [2023-12-19 23:38:25,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-19 23:38:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 468 transitions. [2023-12-19 23:38:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-19 23:38:25,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:38:25,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:38:25,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 23:38:25,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 23:38:25,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:38:25,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:38:25,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2059241743, now seen corresponding path program 1 times [2023-12-19 23:38:25,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:38:25,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910619373] [2023-12-19 23:38:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:25,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:38:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:25,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 23:38:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:25,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 23:38:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:38:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 23:38:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:25,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 23:38:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:38:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:38:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 23:38:25,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:38:25,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910619373] [2023-12-19 23:38:25,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910619373] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:38:25,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188423200] [2023-12-19 23:38:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:38:25,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:38:25,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:38:25,484 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:38:25,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 23:38:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:38:25,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 23:38:25,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:38:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:38:25,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:38:25,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188423200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:38:25,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:38:25,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-19 23:38:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334372969] [2023-12-19 23:38:25,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:38:25,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:38:25,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:38:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:38:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:38:25,605 INFO L87 Difference]: Start difference. First operand 367 states and 468 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 23:38:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:38:25,665 INFO L93 Difference]: Finished difference Result 570 states and 729 transitions. [2023-12-19 23:38:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:38:25,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2023-12-19 23:38:25,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:38:25,666 INFO L225 Difference]: With dead ends: 570 [2023-12-19 23:38:25,666 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 23:38:25,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:38:25,668 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 79 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:38:25,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 208 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:38:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 23:38:25,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 23:38:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 23:38:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 23:38:25,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2023-12-19 23:38:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:38:25,669 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 23:38:25,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 23:38:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 23:38:25,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 23:38:25,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 23:38:25,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 23:38:25,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:38:25,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 23:38:26,645 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 226 233) no Hoare annotation was computed. [2023-12-19 23:38:26,645 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 226 233) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 0 ~systemActive~0)) [2023-12-19 23:38:26,645 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 159 165) no Hoare annotation was computed. [2023-12-19 23:38:26,645 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 159 165) the Hoare annotation is: true [2023-12-19 23:38:26,645 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 449 460) the Hoare annotation is: true [2023-12-19 23:38:26,645 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 449 460) no Hoare annotation was computed. [2023-12-19 23:38:26,645 INFO L899 garLoopResultBuilder]: For program point L453-1(lines 449 460) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 461 469) the Hoare annotation is: true [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 461 469) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 527 556) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L541(lines 541 545) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L902 garLoopResultBuilder]: At program point L541-1(lines 541 545) the Hoare annotation is: true [2023-12-19 23:38:26,646 INFO L902 garLoopResultBuilder]: At program point L537-2(lines 537 551) the Hoare annotation is: true [2023-12-19 23:38:26,646 INFO L902 garLoopResultBuilder]: At program point L533(line 533) the Hoare annotation is: true [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L533-1(line 533) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 527 556) the Hoare annotation is: true [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L552(lines 527 556) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L548(line 548) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L366(lines 366 376) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L139-1(lines 138 157) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L362(lines 362 379) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 209) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L362-1(lines 354 382) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 214) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L627(line 627) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L367(lines 367 373) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L429(lines 429 433) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L429-2(lines 425 436) no Hoare annotation was computed. [2023-12-19 23:38:26,646 INFO L899 garLoopResultBuilder]: For program point L318(lines 318 322) no Hoare annotation was computed. [2023-12-19 23:38:26,647 INFO L899 garLoopResultBuilder]: For program point L318-2(lines 318 322) no Hoare annotation was computed. [2023-12-19 23:38:26,647 INFO L895 garLoopResultBuilder]: At program point L207(line 207) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) (< |old(~pumpRunning~0)| 1) .cse0) (or .cse1 (not (= |old(~methAndRunningLastTime~0)| 0)) (< |old(~waterLevel~0)| 1)) (or .cse1 (not .cse0)))) [2023-12-19 23:38:26,647 INFO L895 garLoopResultBuilder]: At program point L203(line 203) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 1 ~waterLevel~0) (<= ~waterLevel~0 |old(~waterLevel~0)|)) (< |old(~pumpRunning~0)| 1) .cse0) (or .cse1 (not (= |old(~methAndRunningLastTime~0)| 0)) (< |old(~waterLevel~0)| 1)) (or .cse1 (not .cse0)))) [2023-12-19 23:38:26,647 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 135 158) the Hoare annotation is: (let ((.cse3 (= |old(~methAndRunningLastTime~0)| ~methAndRunningLastTime~0)) (.cse4 (= 0 ~systemActive~0)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (and .cse1 .cse2 .cse3) (not .cse4)) (or (< |old(~waterLevel~0)| 2) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 .cse3) (< |old(~pumpRunning~0)| 1) .cse4) (or .cse0 (not (= |old(~methAndRunningLastTime~0)| 0)) (< |old(~waterLevel~0)| 1) (and .cse1 (= ~methAndRunningLastTime~0 0) .cse2)))) [2023-12-19 23:38:26,647 INFO L895 garLoopResultBuilder]: At program point L360(line 360) the Hoare annotation is: (let ((.cse3 (= 0 ~systemActive~0))) (let ((.cse0 (= ~pumpRunning~0 0)) (.cse10 (<= 2 ~waterLevel~0)) (.cse8 (= |old(~pumpRunning~0)| 0)) (.cse1 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse9 (not .cse3))) (let ((.cse4 (and .cse0 .cse10 .cse8 .cse1 .cse9)) (.cse6 (and (<= 1 ~pumpRunning~0) (= ~methAndRunningLastTime~0 0) .cse10 .cse1)) (.cse7 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (< |old(~waterLevel~0)| 2)) (.cse5 (not .cse8))) (and (or (and .cse0 (<= 1 ~waterLevel~0) .cse1) .cse2 (< |old(~pumpRunning~0)| 1) .cse3) (or .cse4 .cse5 .cse6 .cse7 (< |old(~waterLevel~0)| 1) (and .cse0 .cse8 (= ~waterLevel~0 1) .cse9) .cse3) (or .cse4 .cse5 .cse6 .cse7 .cse2 .cse3) (or .cse5 (and .cse0 .cse8 (= |old(~waterLevel~0)| ~waterLevel~0) (= |old(~methAndRunningLastTime~0)| ~methAndRunningLastTime~0)) .cse9))))) [2023-12-19 23:38:26,647 INFO L899 garLoopResultBuilder]: For program point L360-1(line 360) no Hoare annotation was computed. [2023-12-19 23:38:26,647 INFO L895 garLoopResultBuilder]: At program point L212(line 212) the Hoare annotation is: (let ((.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (< |old(~waterLevel~0)| 2)) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (< |old(~pumpRunning~0)| 1) .cse1) (or (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (<= 1 ~waterLevel~0) (<= ~waterLevel~0 |old(~waterLevel~0)|)) .cse2 .cse3 (< |old(~waterLevel~0)| 1)) (or .cse2 .cse3 (<= 2 ~waterLevel~0) .cse0) (or .cse2 (not .cse1)))) [2023-12-19 23:38:26,647 INFO L899 garLoopResultBuilder]: For program point L212-1(lines 193 217) no Hoare annotation was computed. [2023-12-19 23:38:26,647 INFO L899 garLoopResultBuilder]: For program point L146-1(lines 146 152) no Hoare annotation was computed. [2023-12-19 23:38:26,647 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 135 158) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 627) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point L609(lines 609 616) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point L609-2(lines 609 616) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point L85(lines 85 91) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point L85-1(lines 85 91) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L895 garLoopResultBuilder]: At program point L110(lines 65 112) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= 0 ~systemActive~0))) (or (and .cse0 .cse1 .cse2 (<= 1 ~waterLevel~0)) (and .cse0 .cse1 .cse2 .cse3) (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse2 (not .cse3)))) [2023-12-19 23:38:26,648 INFO L895 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= 0 ~systemActive~0))) (or (and .cse0 .cse1 .cse2 (<= 1 ~waterLevel~0)) (and .cse0 .cse1 .cse2 .cse3) (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse2 (not .cse3)))) [2023-12-19 23:38:26,648 INFO L895 garLoopResultBuilder]: At program point L334(line 334) the Hoare annotation is: (and (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (not (= 0 ~systemActive~0))) [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point L66(lines 65 112) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point L95(lines 95 108) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L895 garLoopResultBuilder]: At program point L87(line 87) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= 0 ~systemActive~0))) (or (and .cse0 .cse1 .cse2 (<= 1 ~waterLevel~0)) (and .cse0 .cse1 .cse2 .cse3) (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse2 (not .cse3)))) [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point L116(lines 55 120) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 81) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point L75-1(lines 75 81) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 23:38:26,648 INFO L895 garLoopResultBuilder]: At program point L113(lines 64 114) the Hoare annotation is: false [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point L332(lines 332 338) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point L332-1(lines 332 338) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 107) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L895 garLoopResultBuilder]: At program point L101-2(lines 95 108) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= 0 ~systemActive~0))) (or (and .cse0 (= ~methAndRunningLastTime~0 0) .cse1 (<= 1 ~waterLevel~0)) (and .cse0 .cse1 .cse2) (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse1 (not .cse2)))) [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point L506(lines 506 512) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L895 garLoopResultBuilder]: At program point L186(line 186) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (< ~waterLevel~0 1) (= 0 ~systemActive~0) (not (= ~methAndRunningLastTime~0 0))) [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point L186-1(lines 167 191) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 167 191) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (< ~waterLevel~0 1) (= 0 ~systemActive~0) (not (= ~methAndRunningLastTime~0 0))) [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point isHighWaterSensorDry_returnLabel#1(lines 502 515) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 167 191) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L895 garLoopResultBuilder]: At program point L181(line 181) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (< ~waterLevel~0 1) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) (= 0 ~systemActive~0) (not (= ~methAndRunningLastTime~0 0))) [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 183) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point L171(lines 171 188) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point L299(lines 299 303) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point L299-2(lines 299 303) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 437 448) no Hoare annotation was computed. [2023-12-19 23:38:26,649 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 437 448) the Hoare annotation is: (let ((.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~pumpRunning~0 0))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or (< ~pumpRunning~0 1) (< |old(~waterLevel~0)| 2) .cse0 .cse1) (or .cse2 .cse0 .cse3 (not .cse1)) (or (< |old(~waterLevel~0)| 1) .cse2 .cse0 .cse3))) [2023-12-19 23:38:26,649 INFO L899 garLoopResultBuilder]: For program point L441-1(lines 437 448) no Hoare annotation was computed. [2023-12-19 23:38:26,651 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:38:26,664 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 23:38:26,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 11:38:26 BoogieIcfgContainer [2023-12-19 23:38:26,685 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 23:38:26,686 INFO L158 Benchmark]: Toolchain (without parser) took 6624.45ms. Allocated memory was 398.5MB in the beginning and 491.8MB in the end (delta: 93.3MB). Free memory was 342.9MB in the beginning and 290.5MB in the end (delta: 52.4MB). Peak memory consumption was 146.1MB. Max. memory is 8.0GB. [2023-12-19 23:38:26,686 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 234.9MB. Free memory is still 181.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 23:38:26,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.17ms. Allocated memory is still 398.5MB. Free memory was 342.9MB in the beginning and 322.5MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-19 23:38:26,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.33ms. Allocated memory is still 398.5MB. Free memory was 322.5MB in the beginning and 320.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 23:38:26,686 INFO L158 Benchmark]: Boogie Preprocessor took 34.15ms. Allocated memory is still 398.5MB. Free memory was 320.4MB in the beginning and 318.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 23:38:26,687 INFO L158 Benchmark]: RCFGBuilder took 463.89ms. Allocated memory is still 398.5MB. Free memory was 318.1MB in the beginning and 356.2MB in the end (delta: -38.1MB). Peak memory consumption was 20.6MB. Max. memory is 8.0GB. [2023-12-19 23:38:26,687 INFO L158 Benchmark]: TraceAbstraction took 5676.21ms. Allocated memory was 398.5MB in the beginning and 491.8MB in the end (delta: 93.3MB). Free memory was 355.7MB in the beginning and 290.5MB in the end (delta: 65.2MB). Peak memory consumption was 159.1MB. Max. memory is 8.0GB. [2023-12-19 23:38:26,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 234.9MB. Free memory is still 181.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 395.17ms. Allocated memory is still 398.5MB. Free memory was 342.9MB in the beginning and 322.5MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.33ms. Allocated memory is still 398.5MB. Free memory was 322.5MB in the beginning and 320.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.15ms. Allocated memory is still 398.5MB. Free memory was 320.4MB in the beginning and 318.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 463.89ms. Allocated memory is still 398.5MB. Free memory was 318.1MB in the beginning and 356.2MB in the end (delta: -38.1MB). Peak memory consumption was 20.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5676.21ms. Allocated memory was 398.5MB in the beginning and 491.8MB in the end (delta: 93.3MB). Free memory was 355.7MB in the beginning and 290.5MB in the end (delta: 65.2MB). Peak memory consumption was 159.1MB. 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,"scenario.i","") [49] - GenericResultAtLocation [Line: 121]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [121] - GenericResultAtLocation [Line: 343]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [343] - GenericResultAtLocation [Line: 383]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [383] - GenericResultAtLocation [Line: 421]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [421] - GenericResultAtLocation [Line: 525]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [525] - GenericResultAtLocation [Line: 622]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [622] - GenericResultAtLocation [Line: 631]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [631] * 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 - PositiveResult [Line: 627]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 810 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 783 mSDsluCounter, 2034 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1143 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 892 IncrementalHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 891 mSDtfsCounter, 892 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 563 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=11, InterpolantAutomatonStates: 54, 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, 12 MinimizatonAttempts, 106 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 543 PreInvPairs, 593 NumberOfFragments, 627 HoareAnnotationTreeSize, 543 FormulaSimplifications, 638 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 23 FormulaSimplificationsInter, 2227 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 999 NumberOfCodeBlocks, 999 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 981 ConstructedInterpolants, 0 QuantifiedInterpolants, 1566 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1667 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 319/330 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: ((((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (splverifierCounter == 0)) && (1 <= waterLevel)) || ((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (splverifierCounter == 0)) && (0 == systemActive))) || ((((1 <= pumpRunning) && (2 <= waterLevel)) && (splverifierCounter == 0)) && !((0 == systemActive)))) - InvariantResult [Line: 537]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-12-19 23:38:26,702 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...