/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.02.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:34:51,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:34:51,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:34:51,700 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:34:51,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:34:51,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:34:51,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:34:51,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:34:51,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:34:51,720 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:34:51,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:34:51,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:34:51,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:34:51,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:34:51,721 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:34:51,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:34:51,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:34:51,721 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:34:51,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:34:51,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:34:51,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:34:51,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:34:51,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:34:51,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:34:51,725 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:34:51,725 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:34:51,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:34:51,725 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:34:51,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:34:51,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:34:51,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:34:51,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:34:51,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:34:51,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:34:51,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:34:51,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:34:51,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:34:51,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:34:51,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:34:51,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:34:51,728 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:34:51,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:34:51,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:34:51,728 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:34:51,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:34:51,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:34:51,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:34:51,966 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:34:51,967 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:34:51,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.02.cil-2.c [2023-12-16 00:34:53,000 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:34:53,451 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:34:53,452 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.02.cil-2.c [2023-12-16 00:34:53,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bbc65569/38f692b8a352468ba2f39e9b722d8097/FLAGa9bd48462 [2023-12-16 00:34:53,512 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bbc65569/38f692b8a352468ba2f39e9b722d8097 [2023-12-16 00:34:53,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:34:53,515 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:34:53,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:34:53,517 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:34:53,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:34:53,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:34:53" (1/1) ... [2023-12-16 00:34:53,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2802f74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:53, skipping insertion in model container [2023-12-16 00:34:53,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:34:53" (1/1) ... [2023-12-16 00:34:53,647 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:34:54,857 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.02.cil-2.c[381679,381692] [2023-12-16 00:34:54,887 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.02.cil-2.c[383339,383352] [2023-12-16 00:34:54,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:34:55,004 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:34:55,561 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.02.cil-2.c[381679,381692] [2023-12-16 00:34:55,565 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.02.cil-2.c[383339,383352] [2023-12-16 00:34:55,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:34:55,621 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:34:55,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55 WrapperNode [2023-12-16 00:34:55,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:34:55,624 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:34:55,624 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:34:55,624 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:34:55,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:55,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:55,996 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12639 [2023-12-16 00:34:55,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:34:55,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:34:55,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:34:55,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:34:56,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:56,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:56,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:56,137 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]. [2023-12-16 00:34:56,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:56,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:56,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:56,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:56,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:56,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:56,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:34:56,430 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:34:56,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:34:56,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:34:56,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (1/1) ... [2023-12-16 00:34:56,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:34:56,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:34:56,469 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) [2023-12-16 00:34:56,490 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 [2023-12-16 00:34:56,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:34:56,505 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-16 00:34:56,505 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-16 00:34:56,506 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-16 00:34:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-16 00:34:56,506 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-16 00:34:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-16 00:34:56,506 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 00:34:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 00:34:56,506 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-16 00:34:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-16 00:34:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-16 00:34:56,507 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-16 00:34:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:34:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-16 00:34:56,507 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-16 00:34:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:34:56,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:34:56,577 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:34:56,579 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:35:02,183 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:35:02,295 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:35:02,296 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-16 00:35:02,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:35:02 BoogieIcfgContainer [2023-12-16 00:35:02,297 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:35:02,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:35:02,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:35:02,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:35:02,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:34:53" (1/3) ... [2023-12-16 00:35:02,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57df8769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:35:02, skipping insertion in model container [2023-12-16 00:35:02,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:34:55" (2/3) ... [2023-12-16 00:35:02,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57df8769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:35:02, skipping insertion in model container [2023-12-16 00:35:02,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:35:02" (3/3) ... [2023-12-16 00:35:02,305 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.02.cil-2.c [2023-12-16 00:35:02,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:35:02,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:35:02,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:35:02,400 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;@77bcde8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:35:02,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:35:02,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 2249 states, 2221 states have (on average 1.8860873480414229) internal successors, (4189), 2226 states have internal predecessors, (4189), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 00:35:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 00:35:02,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:02,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:02,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:02,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:02,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1931990387, now seen corresponding path program 1 times [2023-12-16 00:35:02,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:02,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596111922] [2023-12-16 00:35:02,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:02,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:02,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:02,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:02,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:02,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596111922] [2023-12-16 00:35:02,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596111922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:02,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:02,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:35:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68263113] [2023-12-16 00:35:02,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:02,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:35:02,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:02,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:35:02,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:35:02,930 INFO L87 Difference]: Start difference. First operand has 2249 states, 2221 states have (on average 1.8860873480414229) internal successors, (4189), 2226 states have internal predecessors, (4189), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:03,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:03,728 INFO L93 Difference]: Finished difference Result 4665 states and 8728 transitions. [2023-12-16 00:35:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:35:03,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2023-12-16 00:35:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:03,752 INFO L225 Difference]: With dead ends: 4665 [2023-12-16 00:35:03,753 INFO L226 Difference]: Without dead ends: 2418 [2023-12-16 00:35:03,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:35:03,765 INFO L413 NwaCegarLoop]: 4068 mSDtfsCounter, 4366 mSDsluCounter, 12180 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4375 SdHoareTripleChecker+Valid, 16248 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:03,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4375 Valid, 16248 Invalid, 704 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:35:03,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2023-12-16 00:35:03,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2357. [2023-12-16 00:35:03,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 2313 states have (on average 1.8408992650237785) internal successors, (4258), 2317 states have internal predecessors, (4258), 29 states have call successors, (29), 13 states have call predecessors, (29), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2023-12-16 00:35:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 4317 transitions. [2023-12-16 00:35:03,892 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 4317 transitions. Word has length 62 [2023-12-16 00:35:03,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:03,892 INFO L495 AbstractCegarLoop]: Abstraction has 2357 states and 4317 transitions. [2023-12-16 00:35:03,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 4317 transitions. [2023-12-16 00:35:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 00:35:03,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:03,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:03,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:35:03,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:03,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:03,896 INFO L85 PathProgramCache]: Analyzing trace with hash -230609229, now seen corresponding path program 1 times [2023-12-16 00:35:03,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:03,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777100273] [2023-12-16 00:35:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:03,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:03,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:04,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:04,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:04,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:04,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:04,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777100273] [2023-12-16 00:35:04,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777100273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:04,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:04,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:04,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968328751] [2023-12-16 00:35:04,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:04,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:04,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:04,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:04,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:04,019 INFO L87 Difference]: Start difference. First operand 2357 states and 4317 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:04,822 INFO L93 Difference]: Finished difference Result 2788 states and 4980 transitions. [2023-12-16 00:35:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:35:04,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2023-12-16 00:35:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:04,833 INFO L225 Difference]: With dead ends: 2788 [2023-12-16 00:35:04,833 INFO L226 Difference]: Without dead ends: 2560 [2023-12-16 00:35:04,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:35:04,836 INFO L413 NwaCegarLoop]: 4143 mSDtfsCounter, 4356 mSDsluCounter, 16397 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 20540 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:04,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 20540 Invalid, 1067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:35:04,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2023-12-16 00:35:04,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2463. [2023-12-16 00:35:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2401 states have (on average 1.82923781757601) internal successors, (4392), 2406 states have internal predecessors, (4392), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-16 00:35:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 4475 transitions. [2023-12-16 00:35:04,984 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 4475 transitions. Word has length 62 [2023-12-16 00:35:04,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:04,984 INFO L495 AbstractCegarLoop]: Abstraction has 2463 states and 4475 transitions. [2023-12-16 00:35:04,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 4475 transitions. [2023-12-16 00:35:04,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 00:35:04,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:04,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:04,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:35:04,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:04,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash -711689487, now seen corresponding path program 1 times [2023-12-16 00:35:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:04,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589421548] [2023-12-16 00:35:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:04,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:05,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:05,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589421548] [2023-12-16 00:35:05,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589421548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:05,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:05,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041816784] [2023-12-16 00:35:05,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:05,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:05,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:05,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:05,081 INFO L87 Difference]: Start difference. First operand 2463 states and 4475 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:05,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:05,835 INFO L93 Difference]: Finished difference Result 3161 states and 5546 transitions. [2023-12-16 00:35:05,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:35:05,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2023-12-16 00:35:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:05,844 INFO L225 Difference]: With dead ends: 3161 [2023-12-16 00:35:05,845 INFO L226 Difference]: Without dead ends: 2827 [2023-12-16 00:35:05,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:35:05,847 INFO L413 NwaCegarLoop]: 4073 mSDtfsCounter, 4394 mSDsluCounter, 16214 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4403 SdHoareTripleChecker+Valid, 20287 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:05,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4403 Valid, 20287 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:35:05,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2023-12-16 00:35:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2676. [2023-12-16 00:35:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2578 states have (on average 1.8079906904577192) internal successors, (4661), 2585 states have internal predecessors, (4661), 62 states have call successors, (62), 31 states have call predecessors, (62), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2023-12-16 00:35:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 4796 transitions. [2023-12-16 00:35:05,902 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 4796 transitions. Word has length 62 [2023-12-16 00:35:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:05,902 INFO L495 AbstractCegarLoop]: Abstraction has 2676 states and 4796 transitions. [2023-12-16 00:35:05,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:05,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 4796 transitions. [2023-12-16 00:35:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 00:35:05,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:05,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:05,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:35:05,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:05,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:05,904 INFO L85 PathProgramCache]: Analyzing trace with hash -727208205, now seen corresponding path program 1 times [2023-12-16 00:35:05,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:05,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660422727] [2023-12-16 00:35:05,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:05,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:05,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:05,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660422727] [2023-12-16 00:35:05,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660422727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:05,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:05,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954448745] [2023-12-16 00:35:05,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:05,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:05,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:05,988 INFO L87 Difference]: Start difference. First operand 2676 states and 4796 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:06,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:06,780 INFO L93 Difference]: Finished difference Result 3963 states and 6765 transitions. [2023-12-16 00:35:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:35:06,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2023-12-16 00:35:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:06,791 INFO L225 Difference]: With dead ends: 3963 [2023-12-16 00:35:06,791 INFO L226 Difference]: Without dead ends: 3416 [2023-12-16 00:35:06,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:35:06,795 INFO L413 NwaCegarLoop]: 4138 mSDtfsCounter, 4364 mSDsluCounter, 16389 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4372 SdHoareTripleChecker+Valid, 20527 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:06,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4372 Valid, 20527 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 00:35:06,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3416 states. [2023-12-16 00:35:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3416 to 3060. [2023-12-16 00:35:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 2894 states have (on average 1.7736696613683482) internal successors, (5133), 2905 states have internal predecessors, (5133), 102 states have call successors, (102), 55 states have call predecessors, (102), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2023-12-16 00:35:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 5370 transitions. [2023-12-16 00:35:06,872 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 5370 transitions. Word has length 62 [2023-12-16 00:35:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:06,872 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 5370 transitions. [2023-12-16 00:35:06,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 5370 transitions. [2023-12-16 00:35:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 00:35:06,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:06,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:06,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:35:06,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:06,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1080296587, now seen corresponding path program 1 times [2023-12-16 00:35:06,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:06,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904127419] [2023-12-16 00:35:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:06,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:06,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:06,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:06,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904127419] [2023-12-16 00:35:06,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904127419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:06,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:06,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:35:06,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603254535] [2023-12-16 00:35:06,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:06,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:35:06,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:06,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:35:06,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:06,954 INFO L87 Difference]: Start difference. First operand 3060 states and 5370 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:07,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:07,875 INFO L93 Difference]: Finished difference Result 5261 states and 8705 transitions. [2023-12-16 00:35:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:35:07,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2023-12-16 00:35:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:07,889 INFO L225 Difference]: With dead ends: 5261 [2023-12-16 00:35:07,889 INFO L226 Difference]: Without dead ends: 4330 [2023-12-16 00:35:07,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:35:07,893 INFO L413 NwaCegarLoop]: 4139 mSDtfsCounter, 4364 mSDsluCounter, 16392 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4376 SdHoareTripleChecker+Valid, 20531 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:07,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4376 Valid, 20531 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 00:35:07,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2023-12-16 00:35:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 3865. [2023-12-16 00:35:07,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 3567 states have (on average 1.7244182786655453) internal successors, (6151), 3586 states have internal predecessors, (6151), 178 states have call successors, (178), 103 states have call predecessors, (178), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2023-12-16 00:35:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 6602 transitions. [2023-12-16 00:35:07,990 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 6602 transitions. Word has length 62 [2023-12-16 00:35:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:07,990 INFO L495 AbstractCegarLoop]: Abstraction has 3865 states and 6602 transitions. [2023-12-16 00:35:07,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 6602 transitions. [2023-12-16 00:35:07,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 00:35:07,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:07,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:07,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:35:07,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:07,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:07,993 INFO L85 PathProgramCache]: Analyzing trace with hash 847976115, now seen corresponding path program 1 times [2023-12-16 00:35:07,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:07,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365307404] [2023-12-16 00:35:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:07,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:35:08,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:08,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365307404] [2023-12-16 00:35:08,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365307404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:08,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:08,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:35:08,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308697567] [2023-12-16 00:35:08,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:08,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:35:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:08,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:35:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:35:08,074 INFO L87 Difference]: Start difference. First operand 3865 states and 6602 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:08,796 INFO L93 Difference]: Finished difference Result 7007 states and 11395 transitions. [2023-12-16 00:35:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:35:08,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2023-12-16 00:35:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:08,814 INFO L225 Difference]: With dead ends: 7007 [2023-12-16 00:35:08,814 INFO L226 Difference]: Without dead ends: 5272 [2023-12-16 00:35:08,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 00:35:08,823 INFO L413 NwaCegarLoop]: 4153 mSDtfsCounter, 4486 mSDsluCounter, 12194 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4511 SdHoareTripleChecker+Valid, 16347 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:08,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4511 Valid, 16347 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:35:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5272 states. [2023-12-16 00:35:08,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5272 to 4737. [2023-12-16 00:35:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4737 states, 4281 states have (on average 1.6783461807988789) internal successors, (7185), 4317 states have internal predecessors, (7185), 274 states have call successors, (274), 157 states have call predecessors, (274), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2023-12-16 00:35:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 7856 transitions. [2023-12-16 00:35:08,959 INFO L78 Accepts]: Start accepts. Automaton has 4737 states and 7856 transitions. Word has length 62 [2023-12-16 00:35:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:08,960 INFO L495 AbstractCegarLoop]: Abstraction has 4737 states and 7856 transitions. [2023-12-16 00:35:08,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:35:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4737 states and 7856 transitions. [2023-12-16 00:35:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 00:35:08,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:08,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:08,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:35:08,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:08,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:08,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1849177786, now seen corresponding path program 1 times [2023-12-16 00:35:08,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:08,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226199503] [2023-12-16 00:35:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:08,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:09,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 00:35:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 00:35:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:35:09,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:09,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226199503] [2023-12-16 00:35:09,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226199503] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:09,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560280928] [2023-12-16 00:35:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:09,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:09,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:09,102 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) [2023-12-16 00:35:09,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:35:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:09,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:09,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 00:35:09,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:09,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560280928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:09,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:09,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:35:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534897883] [2023-12-16 00:35:09,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:09,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:09,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:09,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:09,283 INFO L87 Difference]: Start difference. First operand 4737 states and 7856 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:35:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:09,539 INFO L93 Difference]: Finished difference Result 9834 states and 15520 transitions. [2023-12-16 00:35:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:09,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 100 [2023-12-16 00:35:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:09,579 INFO L225 Difference]: With dead ends: 9834 [2023-12-16 00:35:09,582 INFO L226 Difference]: Without dead ends: 7227 [2023-12-16 00:35:09,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:09,592 INFO L413 NwaCegarLoop]: 4126 mSDtfsCounter, 4104 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4104 SdHoareTripleChecker+Valid, 4278 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:09,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4104 Valid, 4278 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:09,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2023-12-16 00:35:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7197. [2023-12-16 00:35:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7197 states, 6327 states have (on average 1.6146672988778252) internal successors, (10216), 6396 states have internal predecessors, (10216), 512 states have call successors, (512), 309 states have call predecessors, (512), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2023-12-16 00:35:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7197 states to 7197 states and 11473 transitions. [2023-12-16 00:35:09,793 INFO L78 Accepts]: Start accepts. Automaton has 7197 states and 11473 transitions. Word has length 100 [2023-12-16 00:35:09,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:09,794 INFO L495 AbstractCegarLoop]: Abstraction has 7197 states and 11473 transitions. [2023-12-16 00:35:09,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:35:09,794 INFO L276 IsEmpty]: Start isEmpty. Operand 7197 states and 11473 transitions. [2023-12-16 00:35:09,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 00:35:09,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:09,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:09,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 00:35:10,006 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 [2023-12-16 00:35:10,006 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:10,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1616599654, now seen corresponding path program 1 times [2023-12-16 00:35:10,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:10,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449686875] [2023-12-16 00:35:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:10,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:10,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:10,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:10,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:10,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:10,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 00:35:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:10,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:10,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 00:35:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:10,087 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 00:35:10,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:10,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449686875] [2023-12-16 00:35:10,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449686875] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:10,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998501143] [2023-12-16 00:35:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:10,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:10,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:10,089 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) [2023-12-16 00:35:10,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:35:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:10,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:10,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 00:35:10,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:10,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998501143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:10,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:10,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:10,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584945251] [2023-12-16 00:35:10,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:10,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:10,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:10,198 INFO L87 Difference]: Start difference. First operand 7197 states and 11473 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 00:35:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:10,446 INFO L93 Difference]: Finished difference Result 16951 states and 26175 transitions. [2023-12-16 00:35:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:10,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2023-12-16 00:35:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:10,487 INFO L225 Difference]: With dead ends: 16951 [2023-12-16 00:35:10,487 INFO L226 Difference]: Without dead ends: 11885 [2023-12-16 00:35:10,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:10,504 INFO L413 NwaCegarLoop]: 4267 mSDtfsCounter, 145 mSDsluCounter, 4126 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 8393 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:10,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 8393 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:10,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11885 states. [2023-12-16 00:35:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11885 to 11885. [2023-12-16 00:35:10,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11885 states, 10202 states have (on average 1.5544991178200354) internal successors, (15859), 10320 states have internal predecessors, (15859), 977 states have call successors, (977), 609 states have call predecessors, (977), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2023-12-16 00:35:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11885 states to 11885 states and 18432 transitions. [2023-12-16 00:35:10,992 INFO L78 Accepts]: Start accepts. Automaton has 11885 states and 18432 transitions. Word has length 100 [2023-12-16 00:35:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:10,992 INFO L495 AbstractCegarLoop]: Abstraction has 11885 states and 18432 transitions. [2023-12-16 00:35:10,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 00:35:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 11885 states and 18432 transitions. [2023-12-16 00:35:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 00:35:11,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:11,014 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:11,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 00:35:11,219 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 [2023-12-16 00:35:11,219 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:11,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:11,220 INFO L85 PathProgramCache]: Analyzing trace with hash -443554109, now seen corresponding path program 1 times [2023-12-16 00:35:11,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:11,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077602572] [2023-12-16 00:35:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:11,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 00:35:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 00:35:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-16 00:35:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-16 00:35:11,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077602572] [2023-12-16 00:35:11,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077602572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:11,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54084048] [2023-12-16 00:35:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:11,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:11,329 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) [2023-12-16 00:35:11,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:35:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:11,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:11,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 00:35:11,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54084048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:11,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:11,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 00:35:11,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736669293] [2023-12-16 00:35:11,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:11,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:11,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:11,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:11,554 INFO L87 Difference]: Start difference. First operand 11885 states and 18432 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 00:35:12,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:12,138 INFO L93 Difference]: Finished difference Result 31009 states and 47101 transitions. [2023-12-16 00:35:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:12,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 128 [2023-12-16 00:35:12,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:12,201 INFO L225 Difference]: With dead ends: 31009 [2023-12-16 00:35:12,202 INFO L226 Difference]: Without dead ends: 21259 [2023-12-16 00:35:12,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:12,331 INFO L413 NwaCegarLoop]: 4147 mSDtfsCounter, 4065 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4065 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:12,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4065 Valid, 4299 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21259 states. [2023-12-16 00:35:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21259 to 21151. [2023-12-16 00:35:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21151 states, 17888 states have (on average 1.5120192307692308) internal successors, (27047), 18120 states have internal predecessors, (27047), 1871 states have call successors, (1871), 1199 states have call predecessors, (1871), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2023-12-16 00:35:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21151 states to 21151 states and 31956 transitions. [2023-12-16 00:35:12,930 INFO L78 Accepts]: Start accepts. Automaton has 21151 states and 31956 transitions. Word has length 128 [2023-12-16 00:35:12,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:12,930 INFO L495 AbstractCegarLoop]: Abstraction has 21151 states and 31956 transitions. [2023-12-16 00:35:12,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 00:35:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 21151 states and 31956 transitions. [2023-12-16 00:35:12,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-16 00:35:12,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:12,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:12,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:35:13,184 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 [2023-12-16 00:35:13,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:13,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash -36945596, now seen corresponding path program 1 times [2023-12-16 00:35:13,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:13,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126035360] [2023-12-16 00:35:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-16 00:35:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-16 00:35:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-16 00:35:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 00:35:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 00:35:13,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:13,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126035360] [2023-12-16 00:35:13,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126035360] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:13,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834237544] [2023-12-16 00:35:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:13,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:13,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:13,265 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) [2023-12-16 00:35:13,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:35:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:13,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:13,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 00:35:13,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:13,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834237544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:13,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:13,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:13,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679543660] [2023-12-16 00:35:13,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:13,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:13,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:13,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:13,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:13,447 INFO L87 Difference]: Start difference. First operand 21151 states and 31956 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 00:35:14,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:14,542 INFO L93 Difference]: Finished difference Result 42211 states and 63898 transitions. [2023-12-16 00:35:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:14,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 144 [2023-12-16 00:35:14,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:14,659 INFO L225 Difference]: With dead ends: 42211 [2023-12-16 00:35:14,660 INFO L226 Difference]: Without dead ends: 23193 [2023-12-16 00:35:14,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:14,740 INFO L413 NwaCegarLoop]: 4123 mSDtfsCounter, 4082 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 4151 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:14,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 4151 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:35:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23193 states. [2023-12-16 00:35:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23193 to 23193. [2023-12-16 00:35:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23193 states, 19718 states have (on average 1.4555735875849478) internal successors, (28701), 19950 states have internal predecessors, (28701), 1925 states have call successors, (1925), 1357 states have call predecessors, (1925), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2023-12-16 00:35:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23193 states to 23193 states and 33732 transitions. [2023-12-16 00:35:15,403 INFO L78 Accepts]: Start accepts. Automaton has 23193 states and 33732 transitions. Word has length 144 [2023-12-16 00:35:15,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:15,404 INFO L495 AbstractCegarLoop]: Abstraction has 23193 states and 33732 transitions. [2023-12-16 00:35:15,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 00:35:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 23193 states and 33732 transitions. [2023-12-16 00:35:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-16 00:35:15,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:15,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:15,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 00:35:15,663 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 [2023-12-16 00:35:15,663 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:15,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:15,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1547018971, now seen corresponding path program 1 times [2023-12-16 00:35:15,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:15,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100290298] [2023-12-16 00:35:15,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:15,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-16 00:35:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-16 00:35:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-16 00:35:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-16 00:35:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-16 00:35:15,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:15,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100290298] [2023-12-16 00:35:15,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100290298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:15,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125224136] [2023-12-16 00:35:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:15,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:15,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:15,855 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) [2023-12-16 00:35:15,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:35:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:15,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 00:35:15,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 00:35:16,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:16,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125224136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:16,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:16,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:16,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258562439] [2023-12-16 00:35:16,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:16,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:16,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:16,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:16,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:16,011 INFO L87 Difference]: Start difference. First operand 23193 states and 33732 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 00:35:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:16,576 INFO L93 Difference]: Finished difference Result 39048 states and 56092 transitions. [2023-12-16 00:35:16,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:16,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 144 [2023-12-16 00:35:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:16,650 INFO L225 Difference]: With dead ends: 39048 [2023-12-16 00:35:16,650 INFO L226 Difference]: Without dead ends: 24517 [2023-12-16 00:35:16,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:16,681 INFO L413 NwaCegarLoop]: 4155 mSDtfsCounter, 4079 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4079 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:16,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4079 Valid, 4312 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24517 states. [2023-12-16 00:35:17,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24517 to 24377. [2023-12-16 00:35:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24377 states, 20790 states have (on average 1.431120731120731) internal successors, (29753), 21022 states have internal predecessors, (29753), 1945 states have call successors, (1945), 1449 states have call predecessors, (1945), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2023-12-16 00:35:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24377 states to 24377 states and 34916 transitions. [2023-12-16 00:35:17,548 INFO L78 Accepts]: Start accepts. Automaton has 24377 states and 34916 transitions. Word has length 144 [2023-12-16 00:35:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:17,548 INFO L495 AbstractCegarLoop]: Abstraction has 24377 states and 34916 transitions. [2023-12-16 00:35:17,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 00:35:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 24377 states and 34916 transitions. [2023-12-16 00:35:17,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 00:35:17,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:17,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:17,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 00:35:17,786 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 [2023-12-16 00:35:17,786 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:17,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:17,786 INFO L85 PathProgramCache]: Analyzing trace with hash 557859153, now seen corresponding path program 1 times [2023-12-16 00:35:17,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:17,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179193130] [2023-12-16 00:35:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:17,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 00:35:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-16 00:35:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 00:35:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-16 00:35:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-16 00:35:17,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:17,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179193130] [2023-12-16 00:35:17,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179193130] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:17,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931370417] [2023-12-16 00:35:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:17,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:17,906 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) [2023-12-16 00:35:17,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 00:35:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:18,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:18,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 00:35:18,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:18,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931370417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:18,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:18,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:18,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658259904] [2023-12-16 00:35:18,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:18,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:18,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:18,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:18,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:18,035 INFO L87 Difference]: Start difference. First operand 24377 states and 34916 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-16 00:35:19,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:19,419 INFO L93 Difference]: Finished difference Result 67691 states and 96134 transitions. [2023-12-16 00:35:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:19,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 145 [2023-12-16 00:35:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:19,530 INFO L225 Difference]: With dead ends: 67691 [2023-12-16 00:35:19,531 INFO L226 Difference]: Without dead ends: 45451 [2023-12-16 00:35:19,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:19,567 INFO L413 NwaCegarLoop]: 4274 mSDtfsCounter, 155 mSDsluCounter, 4121 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 8395 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:19,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 8395 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:35:19,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45451 states. [2023-12-16 00:35:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45451 to 45407. [2023-12-16 00:35:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45407 states, 38406 states have (on average 1.3971514867468624) internal successors, (53659), 38868 states have internal predecessors, (53659), 3775 states have call successors, (3775), 2841 states have call predecessors, (3775), 3224 states have return successors, (7134), 3761 states have call predecessors, (7134), 3773 states have call successors, (7134) [2023-12-16 00:35:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45407 states to 45407 states and 64568 transitions. [2023-12-16 00:35:21,453 INFO L78 Accepts]: Start accepts. Automaton has 45407 states and 64568 transitions. Word has length 145 [2023-12-16 00:35:21,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:21,453 INFO L495 AbstractCegarLoop]: Abstraction has 45407 states and 64568 transitions. [2023-12-16 00:35:21,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-16 00:35:21,454 INFO L276 IsEmpty]: Start isEmpty. Operand 45407 states and 64568 transitions. [2023-12-16 00:35:21,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 00:35:21,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:21,537 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:21,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 00:35:21,742 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 [2023-12-16 00:35:21,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:21,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:21,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2138110948, now seen corresponding path program 1 times [2023-12-16 00:35:21,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:21,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691526872] [2023-12-16 00:35:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:21,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 00:35:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-16 00:35:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 00:35:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-16 00:35:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-16 00:35:21,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691526872] [2023-12-16 00:35:21,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691526872] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729796702] [2023-12-16 00:35:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:21,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:21,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:21,824 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:35:21,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 00:35:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:21,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:21,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-16 00:35:21,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729796702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:21,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:21,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:21,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169091337] [2023-12-16 00:35:21,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:21,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:21,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:21,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:21,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:21,984 INFO L87 Difference]: Start difference. First operand 45407 states and 64568 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 00:35:23,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:23,075 INFO L93 Difference]: Finished difference Result 73407 states and 105859 transitions. [2023-12-16 00:35:23,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:23,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 145 [2023-12-16 00:35:23,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:23,177 INFO L225 Difference]: With dead ends: 73407 [2023-12-16 00:35:23,177 INFO L226 Difference]: Without dead ends: 38659 [2023-12-16 00:35:23,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:23,329 INFO L413 NwaCegarLoop]: 4120 mSDtfsCounter, 4077 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 4147 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:23,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 4147 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38659 states. [2023-12-16 00:35:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38659 to 28179. [2023-12-16 00:35:24,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28179 states, 24002 states have (on average 1.3733438880093325) internal successors, (32963), 24244 states have internal predecessors, (32963), 2255 states have call successors, (2255), 1729 states have call predecessors, (2255), 1920 states have return successors, (3778), 2237 states have call predecessors, (3778), 2253 states have call successors, (3778) [2023-12-16 00:35:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28179 states to 28179 states and 38996 transitions. [2023-12-16 00:35:24,488 INFO L78 Accepts]: Start accepts. Automaton has 28179 states and 38996 transitions. Word has length 145 [2023-12-16 00:35:24,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:24,489 INFO L495 AbstractCegarLoop]: Abstraction has 28179 states and 38996 transitions. [2023-12-16 00:35:24,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 00:35:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 28179 states and 38996 transitions. [2023-12-16 00:35:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 00:35:24,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:24,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:24,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 00:35:24,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:24,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:24,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:24,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1382369957, now seen corresponding path program 1 times [2023-12-16 00:35:24,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:24,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139485743] [2023-12-16 00:35:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:24,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 00:35:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-16 00:35:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 00:35:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-16 00:35:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 00:35:24,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:24,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139485743] [2023-12-16 00:35:24,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139485743] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:24,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320740504] [2023-12-16 00:35:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:24,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:24,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:24,905 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:35:24,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 00:35:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:25,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:25,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 00:35:25,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320740504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:25,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:25,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:25,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246379400] [2023-12-16 00:35:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:25,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:25,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:25,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:25,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:25,080 INFO L87 Difference]: Start difference. First operand 28179 states and 38996 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-16 00:35:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:26,643 INFO L93 Difference]: Finished difference Result 76319 states and 105000 transitions. [2023-12-16 00:35:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:26,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 145 [2023-12-16 00:35:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:26,778 INFO L225 Difference]: With dead ends: 76319 [2023-12-16 00:35:26,778 INFO L226 Difference]: Without dead ends: 50287 [2023-12-16 00:35:26,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:26,821 INFO L413 NwaCegarLoop]: 4268 mSDtfsCounter, 143 mSDsluCounter, 4117 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 8385 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:26,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 8385 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50287 states. [2023-12-16 00:35:28,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50287 to 50283. [2023-12-16 00:35:28,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50283 states, 42414 states have (on average 1.3403828924411751) internal successors, (56851), 42896 states have internal predecessors, (56851), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2023-12-16 00:35:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50283 states to 50283 states and 69318 transitions. [2023-12-16 00:35:28,971 INFO L78 Accepts]: Start accepts. Automaton has 50283 states and 69318 transitions. Word has length 145 [2023-12-16 00:35:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:28,972 INFO L495 AbstractCegarLoop]: Abstraction has 50283 states and 69318 transitions. [2023-12-16 00:35:28,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-16 00:35:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 50283 states and 69318 transitions. [2023-12-16 00:35:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 00:35:29,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:29,020 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:29,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 00:35:29,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-16 00:35:29,225 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:29,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash 96420286, now seen corresponding path program 1 times [2023-12-16 00:35:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:29,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040726923] [2023-12-16 00:35:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:29,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-16 00:35:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 00:35:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 00:35:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 00:35:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-16 00:35:29,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:29,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040726923] [2023-12-16 00:35:29,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040726923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:29,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488778054] [2023-12-16 00:35:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:29,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:29,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:29,319 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:35:29,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 00:35:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:29,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 00:35:29,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 00:35:29,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:29,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488778054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:29,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:29,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:29,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080156201] [2023-12-16 00:35:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:29,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:29,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:29,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:29,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:29,462 INFO L87 Difference]: Start difference. First operand 50283 states and 69318 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 00:35:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:31,104 INFO L93 Difference]: Finished difference Result 88239 states and 121052 transitions. [2023-12-16 00:35:31,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:31,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 146 [2023-12-16 00:35:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:31,246 INFO L225 Difference]: With dead ends: 88239 [2023-12-16 00:35:31,246 INFO L226 Difference]: Without dead ends: 51007 [2023-12-16 00:35:31,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:31,288 INFO L413 NwaCegarLoop]: 4148 mSDtfsCounter, 4096 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4096 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:31,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4096 Valid, 4299 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:31,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51007 states. [2023-12-16 00:35:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51007 to 50283. [2023-12-16 00:35:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50283 states, 42414 states have (on average 1.3318951289668506) internal successors, (56491), 42896 states have internal predecessors, (56491), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2023-12-16 00:35:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50283 states to 50283 states and 68958 transitions. [2023-12-16 00:35:33,393 INFO L78 Accepts]: Start accepts. Automaton has 50283 states and 68958 transitions. Word has length 146 [2023-12-16 00:35:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:33,393 INFO L495 AbstractCegarLoop]: Abstraction has 50283 states and 68958 transitions. [2023-12-16 00:35:33,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 00:35:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 50283 states and 68958 transitions. [2023-12-16 00:35:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 00:35:33,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:33,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:33,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 00:35:33,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 00:35:33,639 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:33,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:33,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1662299722, now seen corresponding path program 1 times [2023-12-16 00:35:33,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:33,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867973396] [2023-12-16 00:35:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:33,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-16 00:35:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 00:35:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-16 00:35:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 00:35:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-16 00:35:33,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867973396] [2023-12-16 00:35:33,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867973396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274721750] [2023-12-16 00:35:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:33,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:33,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:33,720 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:35:33,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 00:35:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:33,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 00:35:33,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 00:35:33,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:33,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274721750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:33,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:33,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:33,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287721071] [2023-12-16 00:35:33,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:33,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:33,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:33,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:33,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:33,845 INFO L87 Difference]: Start difference. First operand 50283 states and 68958 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 00:35:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:35,506 INFO L93 Difference]: Finished difference Result 87915 states and 120128 transitions. [2023-12-16 00:35:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 146 [2023-12-16 00:35:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:35,676 INFO L225 Difference]: With dead ends: 87915 [2023-12-16 00:35:35,676 INFO L226 Difference]: Without dead ends: 51455 [2023-12-16 00:35:35,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:35,724 INFO L413 NwaCegarLoop]: 4157 mSDtfsCounter, 4098 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:35,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4310 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51455 states. [2023-12-16 00:35:37,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51455 to 50163. [2023-12-16 00:35:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50163 states, 42294 states have (on average 1.3243249633517757) internal successors, (56011), 42776 states have internal predecessors, (56011), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2023-12-16 00:35:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50163 states to 50163 states and 68478 transitions. [2023-12-16 00:35:37,717 INFO L78 Accepts]: Start accepts. Automaton has 50163 states and 68478 transitions. Word has length 146 [2023-12-16 00:35:37,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:37,717 INFO L495 AbstractCegarLoop]: Abstraction has 50163 states and 68478 transitions. [2023-12-16 00:35:37,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 00:35:37,717 INFO L276 IsEmpty]: Start isEmpty. Operand 50163 states and 68478 transitions. [2023-12-16 00:35:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 00:35:37,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:37,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:37,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 00:35:37,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 00:35:37,968 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:37,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -983657282, now seen corresponding path program 1 times [2023-12-16 00:35:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001147805] [2023-12-16 00:35:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:37,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:37,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:38,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:38,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:38,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-16 00:35:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:38,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 00:35:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-16 00:35:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:38,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 00:35:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-12-16 00:35:38,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:38,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001147805] [2023-12-16 00:35:38,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001147805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:38,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:38,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:35:38,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151823255] [2023-12-16 00:35:38,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:38,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:35:38,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:38,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:35:38,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:35:38,020 INFO L87 Difference]: Start difference. First operand 50163 states and 68478 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 00:35:39,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:39,813 INFO L93 Difference]: Finished difference Result 95865 states and 128803 transitions. [2023-12-16 00:35:39,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:35:39,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 146 [2023-12-16 00:35:39,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:39,928 INFO L225 Difference]: With dead ends: 95865 [2023-12-16 00:35:39,928 INFO L226 Difference]: Without dead ends: 47845 [2023-12-16 00:35:39,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:35:39,984 INFO L413 NwaCegarLoop]: 4070 mSDtfsCounter, 287 mSDsluCounter, 11992 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 16062 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:39,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 16062 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:35:40,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47845 states. [2023-12-16 00:35:41,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47845 to 45155. [2023-12-16 00:35:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45155 states, 38370 states have (on average 1.3295543393275997) internal successors, (51015), 39264 states have internal predecessors, (51015), 3255 states have call successors, (3255), 2473 states have call predecessors, (3255), 3528 states have return successors, (6773), 3449 states have call predecessors, (6773), 3253 states have call successors, (6773) [2023-12-16 00:35:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45155 states to 45155 states and 61043 transitions. [2023-12-16 00:35:41,700 INFO L78 Accepts]: Start accepts. Automaton has 45155 states and 61043 transitions. Word has length 146 [2023-12-16 00:35:41,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:41,701 INFO L495 AbstractCegarLoop]: Abstraction has 45155 states and 61043 transitions. [2023-12-16 00:35:41,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 00:35:41,701 INFO L276 IsEmpty]: Start isEmpty. Operand 45155 states and 61043 transitions. [2023-12-16 00:35:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 00:35:41,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:41,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:41,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 00:35:41,732 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:41,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:41,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1413843700, now seen corresponding path program 1 times [2023-12-16 00:35:41,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:41,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152976988] [2023-12-16 00:35:41,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:41,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-16 00:35:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 00:35:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-16 00:35:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-16 00:35:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-16 00:35:41,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:41,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152976988] [2023-12-16 00:35:41,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152976988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:41,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:35:41,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:35:41,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272945859] [2023-12-16 00:35:41,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:35:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:35:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:35:41,827 INFO L87 Difference]: Start difference. First operand 45155 states and 61043 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 00:35:43,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:43,106 INFO L93 Difference]: Finished difference Result 80117 states and 107182 transitions. [2023-12-16 00:35:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:35:43,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 146 [2023-12-16 00:35:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:43,181 INFO L225 Difference]: With dead ends: 80117 [2023-12-16 00:35:43,181 INFO L226 Difference]: Without dead ends: 37097 [2023-12-16 00:35:43,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:35:43,229 INFO L413 NwaCegarLoop]: 4069 mSDtfsCounter, 287 mSDsluCounter, 11991 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 16060 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:43,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 16060 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:35:43,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37097 states. [2023-12-16 00:35:44,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37097 to 34547. [2023-12-16 00:35:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34547 states, 29508 states have (on average 1.3484817676562288) internal successors, (39791), 30146 states have internal predecessors, (39791), 2429 states have call successors, (2429), 1857 states have call predecessors, (2429), 2608 states have return successors, (4799), 2559 states have call predecessors, (4799), 2427 states have call successors, (4799) [2023-12-16 00:35:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34547 states to 34547 states and 47019 transitions. [2023-12-16 00:35:44,564 INFO L78 Accepts]: Start accepts. Automaton has 34547 states and 47019 transitions. Word has length 146 [2023-12-16 00:35:44,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:44,564 INFO L495 AbstractCegarLoop]: Abstraction has 34547 states and 47019 transitions. [2023-12-16 00:35:44,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 00:35:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand 34547 states and 47019 transitions. [2023-12-16 00:35:44,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 00:35:44,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:44,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:44,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 00:35:44,590 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:44,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:44,590 INFO L85 PathProgramCache]: Analyzing trace with hash 884976712, now seen corresponding path program 1 times [2023-12-16 00:35:44,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:44,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885632428] [2023-12-16 00:35:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:44,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 00:35:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-16 00:35:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-16 00:35:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-16 00:35:44,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:44,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885632428] [2023-12-16 00:35:44,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885632428] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:44,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582484498] [2023-12-16 00:35:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:44,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:44,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:44,660 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:35:44,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 00:35:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:44,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 00:35:44,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 00:35:44,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:44,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582484498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:44,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:44,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:44,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866550928] [2023-12-16 00:35:44,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:44,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:44,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:44,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:44,782 INFO L87 Difference]: Start difference. First operand 34547 states and 47019 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-16 00:35:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:45,928 INFO L93 Difference]: Finished difference Result 56595 states and 78589 transitions. [2023-12-16 00:35:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:45,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 150 [2023-12-16 00:35:45,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:46,001 INFO L225 Difference]: With dead ends: 56595 [2023-12-16 00:35:46,002 INFO L226 Difference]: Without dead ends: 34635 [2023-12-16 00:35:46,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:46,028 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 134 mSDsluCounter, 4106 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 8316 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:46,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 8316 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34635 states. [2023-12-16 00:35:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34635 to 34547. [2023-12-16 00:35:47,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34547 states, 29508 states have (on average 1.3250982784329672) internal successors, (39101), 30146 states have internal predecessors, (39101), 2429 states have call successors, (2429), 1857 states have call predecessors, (2429), 2608 states have return successors, (4799), 2559 states have call predecessors, (4799), 2427 states have call successors, (4799) [2023-12-16 00:35:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34547 states to 34547 states and 46329 transitions. [2023-12-16 00:35:47,210 INFO L78 Accepts]: Start accepts. Automaton has 34547 states and 46329 transitions. Word has length 150 [2023-12-16 00:35:47,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:47,210 INFO L495 AbstractCegarLoop]: Abstraction has 34547 states and 46329 transitions. [2023-12-16 00:35:47,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-16 00:35:47,210 INFO L276 IsEmpty]: Start isEmpty. Operand 34547 states and 46329 transitions. [2023-12-16 00:35:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 00:35:47,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:47,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:47,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 00:35:47,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:47,442 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:47,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:47,442 INFO L85 PathProgramCache]: Analyzing trace with hash -743401018, now seen corresponding path program 1 times [2023-12-16 00:35:47,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:47,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166152398] [2023-12-16 00:35:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 00:35:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-16 00:35:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-16 00:35:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-16 00:35:47,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:47,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166152398] [2023-12-16 00:35:47,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166152398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:47,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395381863] [2023-12-16 00:35:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:47,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:47,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:47,565 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:35:47,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 00:35:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:47,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:35:47,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 00:35:47,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:47,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395381863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:47,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:47,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:47,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528780841] [2023-12-16 00:35:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:47,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:47,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:47,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:47,733 INFO L87 Difference]: Start difference. First operand 34547 states and 46329 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 00:35:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:48,779 INFO L93 Difference]: Finished difference Result 59540 states and 80626 transitions. [2023-12-16 00:35:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:48,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 150 [2023-12-16 00:35:48,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:48,836 INFO L225 Difference]: With dead ends: 59540 [2023-12-16 00:35:48,837 INFO L226 Difference]: Without dead ends: 29432 [2023-12-16 00:35:48,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:48,874 INFO L413 NwaCegarLoop]: 4122 mSDtfsCounter, 4112 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:48,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 4148 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:48,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29432 states. [2023-12-16 00:35:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29432 to 28318. [2023-12-16 00:35:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28318 states, 24319 states have (on average 1.3000534561454007) internal successors, (31616), 24814 states have internal predecessors, (31616), 1933 states have call successors, (1933), 1481 states have call predecessors, (1933), 2064 states have return successors, (3537), 2030 states have call predecessors, (3537), 1931 states have call successors, (3537) [2023-12-16 00:35:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28318 states to 28318 states and 37086 transitions. [2023-12-16 00:35:49,887 INFO L78 Accepts]: Start accepts. Automaton has 28318 states and 37086 transitions. Word has length 150 [2023-12-16 00:35:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:35:49,887 INFO L495 AbstractCegarLoop]: Abstraction has 28318 states and 37086 transitions. [2023-12-16 00:35:49,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 00:35:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 28318 states and 37086 transitions. [2023-12-16 00:35:49,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 00:35:49,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:35:49,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:49,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 00:35:50,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:50,110 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:35:50,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:35:50,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1568094184, now seen corresponding path program 1 times [2023-12-16 00:35:50,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:35:50,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583531922] [2023-12-16 00:35:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:50,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:35:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:35:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 00:35:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:35:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 00:35:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 00:35:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 00:35:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 00:35:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-16 00:35:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 00:35:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-16 00:35:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-16 00:35:50,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:35:50,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583531922] [2023-12-16 00:35:50,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583531922] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:35:50,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048213118] [2023-12-16 00:35:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:35:50,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:35:50,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:35:50,233 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:35:50,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 00:35:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:35:50,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 00:35:50,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:35:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 00:35:50,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:35:50,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048213118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:35:50,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:35:50,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 00:35:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089761767] [2023-12-16 00:35:50,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:35:50,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:35:50,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:35:50,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:35:50,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:50,368 INFO L87 Difference]: Start difference. First operand 28318 states and 37086 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-16 00:35:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:35:51,198 INFO L93 Difference]: Finished difference Result 46898 states and 62316 transitions. [2023-12-16 00:35:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:35:51,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 150 [2023-12-16 00:35:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:35:51,259 INFO L225 Difference]: With dead ends: 46898 [2023-12-16 00:35:51,260 INFO L226 Difference]: Without dead ends: 28390 [2023-12-16 00:35:51,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:35:51,289 INFO L413 NwaCegarLoop]: 4252 mSDtfsCounter, 129 mSDsluCounter, 4105 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 8357 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:35:51,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 8357 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:35:51,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28390 states. Received shutdown request... [2023-12-16 00:35:51,712 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:35:51,712 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:35:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28390 to 28318. [2023-12-16 00:35:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28318 states, 24319 states have (on average 1.2725029812081088) internal successors, (30946), 24814 states have internal predecessors, (30946), 1933 states have call successors, (1933), 1481 states have call predecessors, (1933), 2064 states have return successors, (3537), 2030 states have call predecessors, (3537), 1931 states have call successors, (3537) [2023-12-16 00:35:52,272 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:35:52,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-16 00:35:52,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-16 00:35:52,478 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-16 00:35:52,479 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:35:52,481 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:35:52,483 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:35:52,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:35:52 BoogieIcfgContainer [2023-12-16 00:35:52,484 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:35:52,485 INFO L158 Benchmark]: Toolchain (without parser) took 58969.49ms. Allocated memory was 257.9MB in the beginning and 7.2GB in the end (delta: 7.0GB). Free memory was 172.1MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-16 00:35:52,485 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory was 145.6MB in the beginning and 145.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:35:52,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2107.21ms. Allocated memory was 257.9MB in the beginning and 399.5MB in the end (delta: 141.6MB). Free memory was 172.1MB in the beginning and 261.9MB in the end (delta: -89.8MB). Peak memory consumption was 97.1MB. Max. memory is 8.0GB. [2023-12-16 00:35:52,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 372.07ms. Allocated memory is still 399.5MB. Free memory was 261.9MB in the beginning and 263.5MB in the end (delta: -1.6MB). Peak memory consumption was 115.3MB. Max. memory is 8.0GB. [2023-12-16 00:35:52,485 INFO L158 Benchmark]: Boogie Preprocessor took 432.07ms. Allocated memory is still 399.5MB. Free memory was 263.5MB in the beginning and 215.8MB in the end (delta: 47.7MB). Peak memory consumption was 59.2MB. Max. memory is 8.0GB. [2023-12-16 00:35:52,485 INFO L158 Benchmark]: RCFGBuilder took 5867.26ms. Allocated memory was 399.5MB in the beginning and 1.3GB in the end (delta: 908.1MB). Free memory was 215.3MB in the beginning and 1.0GB in the end (delta: -800.0MB). Peak memory consumption was 432.5MB. Max. memory is 8.0GB. [2023-12-16 00:35:52,486 INFO L158 Benchmark]: TraceAbstraction took 50184.15ms. Allocated memory was 1.3GB in the beginning and 7.2GB in the end (delta: 5.9GB). Free memory was 1.0GB in the beginning and 4.7GB in the end (delta: -3.7GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-16 00:35:52,486 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 194.0MB. Free memory was 145.6MB in the beginning and 145.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2107.21ms. Allocated memory was 257.9MB in the beginning and 399.5MB in the end (delta: 141.6MB). Free memory was 172.1MB in the beginning and 261.9MB in the end (delta: -89.8MB). Peak memory consumption was 97.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 372.07ms. Allocated memory is still 399.5MB. Free memory was 261.9MB in the beginning and 263.5MB in the end (delta: -1.6MB). Peak memory consumption was 115.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 432.07ms. Allocated memory is still 399.5MB. Free memory was 263.5MB in the beginning and 215.8MB in the end (delta: 47.7MB). Peak memory consumption was 59.2MB. Max. memory is 8.0GB. * RCFGBuilder took 5867.26ms. Allocated memory was 399.5MB in the beginning and 1.3GB in the end (delta: 908.1MB). Free memory was 215.3MB in the beginning and 1.0GB in the end (delta: -800.0MB). Peak memory consumption was 432.5MB. Max. memory is 8.0GB. * TraceAbstraction took 50184.15ms. Allocated memory was 1.3GB in the beginning and 7.2GB in the end (delta: 5.9GB). Free memory was 1.0GB in the beginning and 4.7GB in the end (delta: -3.7GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. * 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 - TimeoutResultAtElement [Line: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 11118]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11118). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 2249 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 50.1s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 23.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60427 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60323 mSDsluCounter, 222392 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 135170 mSDsCounter, 474 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6328 IncrementalHoareTripleChecker+Invalid, 6802 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 474 mSolverCounterUnsat, 87222 mSDtfsCounter, 6328 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2337 GetRequests, 2183 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50283occurred in iteration=14, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.9s AutomataMinimizationTime, 21 MinimizatonAttempts, 20929 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 4250 NumberOfCodeBlocks, 4250 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 4216 ConstructedInterpolants, 0 QuantifiedInterpolants, 6907 SizeOfPredicates, 0 NumberOfNonLiveVariables, 6555 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 34 InterpolantComputations, 21 PerfectInterpolantSequences, 1903/2236 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown