/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.02.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:05:34,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:05:34,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:05:34,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:05:34,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:05:34,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:05:34,782 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:05:34,782 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:05:34,783 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:05:34,787 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:05:34,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:05:34,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:05:34,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:05:34,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:05:34,789 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:05:34,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:05:34,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:05:34,789 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:05:34,789 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:05:34,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:05:34,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:05:34,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:05:34,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:05:34,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:05:34,792 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:05:34,792 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:05:34,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:05:34,792 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:05:34,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:05:34,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:05:34,793 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:05:34,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:05:34,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:05:34,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:05:34,794 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:05:34,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:05:34,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:05:34,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:05:34,794 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:05:34,795 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:05:34,795 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:05:34,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:05:34,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:05:34,796 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:05:34,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:05:35,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:05:35,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:05:35,015 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:05:35,015 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:05:35,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.02.cil-1.c [2023-12-18 22:05:35,962 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:05:36,408 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:05:36,410 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.02.cil-1.c [2023-12-18 22:05:36,458 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e074064ac/e522e77f44e34e76b86de66d12b88477/FLAGd9b46305d [2023-12-18 22:05:36,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e074064ac/e522e77f44e34e76b86de66d12b88477 [2023-12-18 22:05:36,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:05:36,476 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:05:36,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:05:36,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:05:36,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:05:36,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:05:36" (1/1) ... [2023-12-18 22:05:36,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0d7c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:36, skipping insertion in model container [2023-12-18 22:05:36,482 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:05:36" (1/1) ... [2023-12-18 22:05:36,635 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:05:37,874 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_label41+token_ring.02.cil-1.c[376251,376264] [2023-12-18 22:05:37,900 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_label41+token_ring.02.cil-1.c[383339,383352] [2023-12-18 22:05:38,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:05:38,021 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:05:38,572 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_label41+token_ring.02.cil-1.c[376251,376264] [2023-12-18 22:05:38,579 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_label41+token_ring.02.cil-1.c[383339,383352] [2023-12-18 22:05:38,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:05:38,634 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:05:38,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38 WrapperNode [2023-12-18 22:05:38,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:05:38,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:05:38,636 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:05:38,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:05:38,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:38,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:38,912 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12633 [2023-12-18 22:05:38,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:05:38,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:05:38,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:05:38,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:05:38,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:38,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:39,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:39,175 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]. [2023-12-18 22:05:39,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:39,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:39,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:39,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:39,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:39,397 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:39,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:05:39,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:05:39,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:05:39,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:05:39,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (1/1) ... [2023-12-18 22:05:39,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:05:39,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:05:39,460 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) [2023-12-18 22:05:39,477 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 [2023-12-18 22:05:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:05:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:05:39,481 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:05:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:05:39,482 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:05:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:05:39,482 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:05:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:05:39,482 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:05:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:05:39,482 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:05:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:05:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:05:39,482 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:05:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:05:39,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:05:39,571 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:05:39,572 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:05:45,044 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:05:45,127 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:05:45,127 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-18 22:05:45,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:05:45 BoogieIcfgContainer [2023-12-18 22:05:45,128 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:05:45,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:05:45,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:05:45,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:05:45,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:05:36" (1/3) ... [2023-12-18 22:05:45,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baed970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:05:45, skipping insertion in model container [2023-12-18 22:05:45,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:05:38" (2/3) ... [2023-12-18 22:05:45,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baed970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:05:45, skipping insertion in model container [2023-12-18 22:05:45,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:05:45" (3/3) ... [2023-12-18 22:05:45,136 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.02.cil-1.c [2023-12-18 22:05:45,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:05:45,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:05:45,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:05:45,235 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;@7907492b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:05:45,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:05:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 2241 states, 2216 states have (on average 1.8858303249097472) internal successors, (4179), 2219 states have internal predecessors, (4179), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-18 22:05:45,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:05:45,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:45,255 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] [2023-12-18 22:05:45,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:45,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash -584044612, now seen corresponding path program 1 times [2023-12-18 22:05:45,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:45,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586638491] [2023-12-18 22:05:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:45,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:45,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:05:45,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:45,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586638491] [2023-12-18 22:05:45,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586638491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:45,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:05:45,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:05:45,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582975877] [2023-12-18 22:05:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:45,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:05:45,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:45,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:05:45,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:05:45,638 INFO L87 Difference]: Start difference. First operand has 2241 states, 2216 states have (on average 1.8858303249097472) internal successors, (4179), 2219 states have internal predecessors, (4179), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:46,455 INFO L93 Difference]: Finished difference Result 4643 states and 8686 transitions. [2023-12-18 22:05:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:05:46,457 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-18 22:05:46,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:46,479 INFO L225 Difference]: With dead ends: 4643 [2023-12-18 22:05:46,479 INFO L226 Difference]: Without dead ends: 2404 [2023-12-18 22:05:46,485 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 [2023-12-18 22:05:46,487 INFO L413 NwaCegarLoop]: 4057 mSDtfsCounter, 4350 mSDsluCounter, 12142 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 16199 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:05:46,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 16199 Invalid, 691 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [68 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 22:05:46,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2023-12-18 22:05:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2345. [2023-12-18 22:05:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2303 states have (on average 1.84020842379505) internal successors, (4238), 2306 states have internal predecessors, (4238), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2023-12-18 22:05:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 4295 transitions. [2023-12-18 22:05:46,571 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 4295 transitions. Word has length 61 [2023-12-18 22:05:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:46,572 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 4295 transitions. [2023-12-18 22:05:46,572 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 4295 transitions. [2023-12-18 22:05:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:05:46,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:46,574 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] [2023-12-18 22:05:46,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:05:46,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:46,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1424404092, now seen corresponding path program 1 times [2023-12-18 22:05:46,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:46,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956089373] [2023-12-18 22:05:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:46,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:46,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:46,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:05:46,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:46,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956089373] [2023-12-18 22:05:46,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956089373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:46,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:05:46,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:05:46,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794644638] [2023-12-18 22:05:46,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:46,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:05:46,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:46,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:05:46,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:46,674 INFO L87 Difference]: Start difference. First operand 2345 states and 4295 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:47,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:47,390 INFO L93 Difference]: Finished difference Result 2757 states and 4924 transitions. [2023-12-18 22:05:47,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:05:47,391 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-18 22:05:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:47,403 INFO L225 Difference]: With dead ends: 2757 [2023-12-18 22:05:47,403 INFO L226 Difference]: Without dead ends: 2541 [2023-12-18 22:05:47,405 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 [2023-12-18 22:05:47,406 INFO L413 NwaCegarLoop]: 4121 mSDtfsCounter, 4342 mSDsluCounter, 16314 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 20435 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:05:47,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 20435 Invalid, 1048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 22:05:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2023-12-18 22:05:47,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2446. [2023-12-18 22:05:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2446 states, 2386 states have (on average 1.8281642917015926) internal successors, (4362), 2390 states have internal predecessors, (4362), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-18 22:05:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 4443 transitions. [2023-12-18 22:05:47,460 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 4443 transitions. Word has length 61 [2023-12-18 22:05:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:47,460 INFO L495 AbstractCegarLoop]: Abstraction has 2446 states and 4443 transitions. [2023-12-18 22:05:47,460 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 4443 transitions. [2023-12-18 22:05:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:05:47,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:47,462 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] [2023-12-18 22:05:47,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:05:47,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:47,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1408885374, now seen corresponding path program 1 times [2023-12-18 22:05:47,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:47,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232088622] [2023-12-18 22:05:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:47,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:47,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:05:47,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:47,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232088622] [2023-12-18 22:05:47,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232088622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:47,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:05:47,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:05:47,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556412292] [2023-12-18 22:05:47,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:47,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:05:47,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:47,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:05:47,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:47,554 INFO L87 Difference]: Start difference. First operand 2446 states and 4443 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:48,157 INFO L93 Difference]: Finished difference Result 3115 states and 5460 transitions. [2023-12-18 22:05:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:05:48,158 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-18 22:05:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:48,166 INFO L225 Difference]: With dead ends: 3115 [2023-12-18 22:05:48,166 INFO L226 Difference]: Without dead ends: 2798 [2023-12-18 22:05:48,168 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 [2023-12-18 22:05:48,169 INFO L413 NwaCegarLoop]: 4062 mSDtfsCounter, 4378 mSDsluCounter, 16167 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4387 SdHoareTripleChecker+Valid, 20229 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:05:48,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4387 Valid, 20229 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 22:05:48,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2023-12-18 22:05:48,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2649. [2023-12-18 22:05:48,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2553 states have (on average 1.8061104582843712) internal successors, (4611), 2559 states have internal predecessors, (4611), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2023-12-18 22:05:48,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 4744 transitions. [2023-12-18 22:05:48,220 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 4744 transitions. Word has length 61 [2023-12-18 22:05:48,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:48,220 INFO L495 AbstractCegarLoop]: Abstraction has 2649 states and 4744 transitions. [2023-12-18 22:05:48,220 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:48,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 4744 transitions. [2023-12-18 22:05:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:05:48,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:48,222 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] [2023-12-18 22:05:48,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:05:48,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:48,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash -946919876, now seen corresponding path program 1 times [2023-12-18 22:05:48,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:48,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427689341] [2023-12-18 22:05:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:48,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:48,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:48,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:05:48,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:48,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427689341] [2023-12-18 22:05:48,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427689341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:48,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:05:48,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:05:48,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104313892] [2023-12-18 22:05:48,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:48,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:05:48,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:48,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:05:48,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:48,316 INFO L87 Difference]: Start difference. First operand 2649 states and 4744 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:49,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:49,215 INFO L93 Difference]: Finished difference Result 3887 states and 6619 transitions. [2023-12-18 22:05:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:05:49,215 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-18 22:05:49,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:49,226 INFO L225 Difference]: With dead ends: 3887 [2023-12-18 22:05:49,226 INFO L226 Difference]: Without dead ends: 3367 [2023-12-18 22:05:49,228 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 [2023-12-18 22:05:49,229 INFO L413 NwaCegarLoop]: 4116 mSDtfsCounter, 4350 mSDsluCounter, 16306 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 20422 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:05:49,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 20422 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 22:05:49,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2023-12-18 22:05:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3033. [2023-12-18 22:05:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2869 states have (on average 1.7716974555594285) internal successors, (5083), 2879 states have internal predecessors, (5083), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2023-12-18 22:05:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5318 transitions. [2023-12-18 22:05:49,311 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5318 transitions. Word has length 61 [2023-12-18 22:05:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:49,311 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 5318 transitions. [2023-12-18 22:05:49,311 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5318 transitions. [2023-12-18 22:05:49,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:05:49,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:49,330 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] [2023-12-18 22:05:49,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:05:49,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:49,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash 981352826, now seen corresponding path program 1 times [2023-12-18 22:05:49,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:49,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158584817] [2023-12-18 22:05:49,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:49,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:49,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:49,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:49,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:05:49,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:49,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158584817] [2023-12-18 22:05:49,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158584817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:49,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:05:49,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:05:49,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186411551] [2023-12-18 22:05:49,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:49,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:05:49,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:49,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:05:49,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:49,414 INFO L87 Difference]: Start difference. First operand 3033 states and 5318 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:50,175 INFO L93 Difference]: Finished difference Result 5185 states and 8559 transitions. [2023-12-18 22:05:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:05:50,175 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-18 22:05:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:50,190 INFO L225 Difference]: With dead ends: 5185 [2023-12-18 22:05:50,190 INFO L226 Difference]: Without dead ends: 4281 [2023-12-18 22:05:50,194 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 [2023-12-18 22:05:50,194 INFO L413 NwaCegarLoop]: 4117 mSDtfsCounter, 4350 mSDsluCounter, 16309 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 20426 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:05:50,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4362 Valid, 20426 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 22:05:50,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2023-12-18 22:05:50,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3818. [2023-12-18 22:05:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3522 states have (on average 1.7208972174900625) internal successors, (6061), 3540 states have internal predecessors, (6061), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2023-12-18 22:05:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 6510 transitions. [2023-12-18 22:05:50,311 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 6510 transitions. Word has length 61 [2023-12-18 22:05:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:50,311 INFO L495 AbstractCegarLoop]: Abstraction has 3818 states and 6510 transitions. [2023-12-18 22:05:50,311 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 6510 transitions. [2023-12-18 22:05:50,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:05:50,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:50,313 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] [2023-12-18 22:05:50,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:05:50,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:50,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:50,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1874839164, now seen corresponding path program 1 times [2023-12-18 22:05:50,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:50,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994967132] [2023-12-18 22:05:50,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:50,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:50,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:50,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:05:50,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:50,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994967132] [2023-12-18 22:05:50,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994967132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:50,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:05:50,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:05:50,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134238177] [2023-12-18 22:05:50,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:50,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:05:50,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:05:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:05:50,374 INFO L87 Difference]: Start difference. First operand 3818 states and 6510 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:51,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:51,089 INFO L93 Difference]: Finished difference Result 6913 states and 11211 transitions. [2023-12-18 22:05:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:05:51,090 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-12-18 22:05:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:51,106 INFO L225 Difference]: With dead ends: 6913 [2023-12-18 22:05:51,107 INFO L226 Difference]: Without dead ends: 5225 [2023-12-18 22:05:51,113 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 [2023-12-18 22:05:51,113 INFO L413 NwaCegarLoop]: 4142 mSDtfsCounter, 4472 mSDsluCounter, 12167 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 16309 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:05:51,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4497 Valid, 16309 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 22:05:51,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5225 states. [2023-12-18 22:05:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5225 to 4690. [2023-12-18 22:05:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4236 states have (on average 1.674929178470255) internal successors, (7095), 4271 states have internal predecessors, (7095), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2023-12-18 22:05:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 7764 transitions. [2023-12-18 22:05:51,250 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 7764 transitions. Word has length 61 [2023-12-18 22:05:51,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:51,251 INFO L495 AbstractCegarLoop]: Abstraction has 4690 states and 7764 transitions. [2023-12-18 22:05:51,251 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:05:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 7764 transitions. [2023-12-18 22:05:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-18 22:05:51,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:51,256 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] [2023-12-18 22:05:51,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:05:51,256 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:51,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:51,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2042674346, now seen corresponding path program 1 times [2023-12-18 22:05:51,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:51,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347030789] [2023-12-18 22:05:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:51,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:51,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:51,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:51,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:51,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:05:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:51,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-18 22:05:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:05:51,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347030789] [2023-12-18 22:05:51,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347030789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:05:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914056147] [2023-12-18 22:05:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:51,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:05:51,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:05:51,396 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) [2023-12-18 22:05:51,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 22:05:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:51,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:05:51,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:05:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-18 22:05:51,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:05:51,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914056147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:51,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:05:51,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:05:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028873268] [2023-12-18 22:05:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:51,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:05:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:05:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:51,551 INFO L87 Difference]: Start difference. First operand 4690 states and 7764 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-18 22:05:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:51,771 INFO L93 Difference]: Finished difference Result 9693 states and 15244 transitions. [2023-12-18 22:05:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:05:51,772 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 99 [2023-12-18 22:05:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:51,802 INFO L225 Difference]: With dead ends: 9693 [2023-12-18 22:05:51,802 INFO L226 Difference]: Without dead ends: 7133 [2023-12-18 22:05:51,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:51,812 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4092 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4092 SdHoareTripleChecker+Valid, 4254 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 [2023-12-18 22:05:51,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4092 Valid, 4254 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:05:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7133 states. [2023-12-18 22:05:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7133 to 7105. [2023-12-18 22:05:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 6237 states have (on average 1.6091069424402757) internal successors, (10036), 6305 states have internal predecessors, (10036), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2023-12-18 22:05:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 11291 transitions. [2023-12-18 22:05:51,987 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 11291 transitions. Word has length 99 [2023-12-18 22:05:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:51,988 INFO L495 AbstractCegarLoop]: Abstraction has 7105 states and 11291 transitions. [2023-12-18 22:05:51,988 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-18 22:05:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 11291 transitions. [2023-12-18 22:05:51,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-18 22:05:51,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:51,994 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] [2023-12-18 22:05:52,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 22:05:52,199 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 [2023-12-18 22:05:52,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:52,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:52,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1877378954, now seen corresponding path program 1 times [2023-12-18 22:05:52,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:52,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087584619] [2023-12-18 22:05:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:52,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:52,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:52,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:52,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:05:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-18 22:05:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:05:52,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:52,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087584619] [2023-12-18 22:05:52,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087584619] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:05:52,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603792672] [2023-12-18 22:05:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:52,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:05:52,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:05:52,288 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) [2023-12-18 22:05:52,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 22:05:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:52,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:05:52,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:05:52,396 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-18 22:05:52,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:05:52,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603792672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:52,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:05:52,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:05:52,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19617227] [2023-12-18 22:05:52,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:52,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:05:52,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:52,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:05:52,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:52,398 INFO L87 Difference]: Start difference. First operand 7105 states and 11291 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:05:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:52,622 INFO L93 Difference]: Finished difference Result 16767 states and 25811 transitions. [2023-12-18 22:05:52,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:05:52,623 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2023-12-18 22:05:52,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:52,651 INFO L225 Difference]: With dead ends: 16767 [2023-12-18 22:05:52,651 INFO L226 Difference]: Without dead ends: 11793 [2023-12-18 22:05:52,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:52,666 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 145 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 8367 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 [2023-12-18 22:05:52,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 8367 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:05:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11793 states. [2023-12-18 22:05:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11793 to 11793. [2023-12-18 22:05:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11793 states, 10112 states have (on average 1.5505340189873418) internal successors, (15679), 10229 states have internal predecessors, (15679), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2023-12-18 22:05:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 18250 transitions. [2023-12-18 22:05:53,083 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 18250 transitions. Word has length 99 [2023-12-18 22:05:53,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:53,083 INFO L495 AbstractCegarLoop]: Abstraction has 11793 states and 18250 transitions. [2023-12-18 22:05:53,084 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:05:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 18250 transitions. [2023-12-18 22:05:53,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-18 22:05:53,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:53,101 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] [2023-12-18 22:05:53,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 22:05:53,305 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 [2023-12-18 22:05:53,306 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:53,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1335572908, now seen corresponding path program 1 times [2023-12-18 22:05:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:53,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862017111] [2023-12-18 22:05:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:05:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-18 22:05:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-18 22:05:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-18 22:05:53,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:53,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862017111] [2023-12-18 22:05:53,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862017111] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:05:53,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467329262] [2023-12-18 22:05:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:53,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:05:53,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:05:53,381 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) [2023-12-18 22:05:53,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 22:05:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:53,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:05:53,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:05:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-18 22:05:53,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:05:53,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467329262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:53,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:05:53,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:05:53,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144810938] [2023-12-18 22:05:53,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:53,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:05:53,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:53,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:05:53,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:53,550 INFO L87 Difference]: Start difference. First operand 11793 states and 18250 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-18 22:05:54,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:54,016 INFO L93 Difference]: Finished difference Result 30733 states and 46555 transitions. [2023-12-18 22:05:54,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:05:54,017 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 127 [2023-12-18 22:05:54,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:54,088 INFO L225 Difference]: With dead ends: 30733 [2023-12-18 22:05:54,088 INFO L226 Difference]: Without dead ends: 21075 [2023-12-18 22:05:54,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:54,106 INFO L413 NwaCegarLoop]: 4117 mSDtfsCounter, 4053 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4053 SdHoareTripleChecker+Valid, 4257 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 [2023-12-18 22:05:54,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4053 Valid, 4257 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:05:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21075 states. [2023-12-18 22:05:54,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21075 to 20969. [2023-12-18 22:05:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20969 states, 17708 states have (on average 1.5070589564038852) internal successors, (26687), 17939 states have internal predecessors, (26687), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2023-12-18 22:05:54,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20969 states to 20969 states and 31594 transitions. [2023-12-18 22:05:54,647 INFO L78 Accepts]: Start accepts. Automaton has 20969 states and 31594 transitions. Word has length 127 [2023-12-18 22:05:54,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:54,647 INFO L495 AbstractCegarLoop]: Abstraction has 20969 states and 31594 transitions. [2023-12-18 22:05:54,647 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-18 22:05:54,647 INFO L276 IsEmpty]: Start isEmpty. Operand 20969 states and 31594 transitions. [2023-12-18 22:05:54,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-18 22:05:54,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:54,688 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, 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] [2023-12-18 22:05:54,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 22:05:54,893 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 [2023-12-18 22:05:54,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:54,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:54,895 INFO L85 PathProgramCache]: Analyzing trace with hash 791512030, now seen corresponding path program 1 times [2023-12-18 22:05:54,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:54,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113497260] [2023-12-18 22:05:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:54,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-18 22:05:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-18 22:05:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-18 22:05:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-18 22:05:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 22:05:54,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:54,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113497260] [2023-12-18 22:05:54,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113497260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:05:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235545733] [2023-12-18 22:05:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:54,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:05:54,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:05:54,997 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) [2023-12-18 22:05:55,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 22:05:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:55,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:05:55,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:05:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-18 22:05:55,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:05:55,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235545733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:55,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:05:55,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:05:55,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453586895] [2023-12-18 22:05:55,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:55,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:05:55,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:55,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:05:55,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:55,141 INFO L87 Difference]: Start difference. First operand 20969 states and 31594 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-12-18 22:05:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:55,634 INFO L93 Difference]: Finished difference Result 33443 states and 50451 transitions. [2023-12-18 22:05:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:05:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 143 [2023-12-18 22:05:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:55,675 INFO L225 Difference]: With dead ends: 33443 [2023-12-18 22:05:55,675 INFO L226 Difference]: Without dead ends: 18715 [2023-12-18 22:05:55,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:55,702 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4086 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4142 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 [2023-12-18 22:05:55,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4142 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:05:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18715 states. [2023-12-18 22:05:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18715 to 14099. [2023-12-18 22:05:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14099 states, 12046 states have (on average 1.4857214012950357) internal successors, (17897), 12167 states have internal predecessors, (17897), 1161 states have call successors, (1161), 794 states have call predecessors, (1161), 890 states have return successors, (1648), 1153 states have call predecessors, (1648), 1161 states have call successors, (1648) [2023-12-18 22:05:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14099 states to 14099 states and 20706 transitions. [2023-12-18 22:05:56,338 INFO L78 Accepts]: Start accepts. Automaton has 14099 states and 20706 transitions. Word has length 143 [2023-12-18 22:05:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:56,339 INFO L495 AbstractCegarLoop]: Abstraction has 14099 states and 20706 transitions. [2023-12-18 22:05:56,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-12-18 22:05:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14099 states and 20706 transitions. [2023-12-18 22:05:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-18 22:05:56,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:56,361 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] [2023-12-18 22:05:56,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 22:05:56,567 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 [2023-12-18 22:05:56,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:56,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2075302660, now seen corresponding path program 1 times [2023-12-18 22:05:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:56,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773762633] [2023-12-18 22:05:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:56,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-18 22:05:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-18 22:05:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-18 22:05:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-18 22:05:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 22:05:56,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:56,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773762633] [2023-12-18 22:05:56,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773762633] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:05:56,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045428453] [2023-12-18 22:05:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:56,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:05:56,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:05:56,652 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) [2023-12-18 22:05:56,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 22:05:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:56,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:05:56,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:05:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-18 22:05:56,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:05:56,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045428453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:56,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:05:56,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:05:56,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547499950] [2023-12-18 22:05:56,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:56,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:05:56,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:05:56,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:56,779 INFO L87 Difference]: Start difference. First operand 14099 states and 20706 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:05:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:57,079 INFO L93 Difference]: Finished difference Result 23244 states and 33469 transitions. [2023-12-18 22:05:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:05:57,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 143 [2023-12-18 22:05:57,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:57,116 INFO L225 Difference]: With dead ends: 23244 [2023-12-18 22:05:57,116 INFO L226 Difference]: Without dead ends: 14923 [2023-12-18 22:05:57,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:57,131 INFO L413 NwaCegarLoop]: 4143 mSDtfsCounter, 4079 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4079 SdHoareTripleChecker+Valid, 4288 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 [2023-12-18 22:05:57,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4079 Valid, 4288 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:05:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14923 states. [2023-12-18 22:05:57,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14923 to 14857. [2023-12-18 22:05:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14857 states, 12716 states have (on average 1.4599716892104435) internal successors, (18565), 12837 states have internal predecessors, (18565), 1183 states have call successors, (1183), 860 states have call predecessors, (1183), 956 states have return successors, (1736), 1175 states have call predecessors, (1736), 1183 states have call successors, (1736) [2023-12-18 22:05:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14857 states to 14857 states and 21484 transitions. [2023-12-18 22:05:57,596 INFO L78 Accepts]: Start accepts. Automaton has 14857 states and 21484 transitions. Word has length 143 [2023-12-18 22:05:57,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:57,596 INFO L495 AbstractCegarLoop]: Abstraction has 14857 states and 21484 transitions. [2023-12-18 22:05:57,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:05:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 14857 states and 21484 transitions. [2023-12-18 22:05:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-18 22:05:57,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:57,613 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] [2023-12-18 22:05:57,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 22:05:57,818 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 [2023-12-18 22:05:57,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:57,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:57,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1556193784, now seen corresponding path program 1 times [2023-12-18 22:05:57,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:57,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434822179] [2023-12-18 22:05:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:57,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:05:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 22:05:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 22:05:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-18 22:05:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 22:05:57,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:57,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434822179] [2023-12-18 22:05:57,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434822179] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:05:57,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995116156] [2023-12-18 22:05:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:57,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:05:57,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:05:57,909 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) [2023-12-18 22:05:57,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 22:05:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:58,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:05:58,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:05:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-18 22:05:58,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:05:58,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995116156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:58,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:05:58,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:05:58,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102031785] [2023-12-18 22:05:58,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:58,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:05:58,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:05:58,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:58,043 INFO L87 Difference]: Start difference. First operand 14857 states and 21484 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), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:05:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:05:58,573 INFO L93 Difference]: Finished difference Result 39509 states and 55950 transitions. [2023-12-18 22:05:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:05:58,573 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), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 144 [2023-12-18 22:05:58,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:05:58,639 INFO L225 Difference]: With dead ends: 39509 [2023-12-18 22:05:58,639 INFO L226 Difference]: Without dead ends: 26789 [2023-12-18 22:05:58,664 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 [2023-12-18 22:05:58,665 INFO L413 NwaCegarLoop]: 4253 mSDtfsCounter, 135 mSDsluCounter, 4112 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 8365 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 [2023-12-18 22:05:58,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 8365 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:05:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26789 states. [2023-12-18 22:05:59,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26789 to 26743. [2023-12-18 22:05:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26743 states, 22644 states have (on average 1.4140169581346052) internal successors, (32019), 22885 states have internal predecessors, (32019), 2245 states have call successors, (2245), 1660 states have call predecessors, (2245), 1852 states have return successors, (3798), 2229 states have call predecessors, (3798), 2245 states have call successors, (3798) [2023-12-18 22:05:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26743 states to 26743 states and 38062 transitions. [2023-12-18 22:05:59,494 INFO L78 Accepts]: Start accepts. Automaton has 26743 states and 38062 transitions. Word has length 144 [2023-12-18 22:05:59,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:05:59,495 INFO L495 AbstractCegarLoop]: Abstraction has 26743 states and 38062 transitions. [2023-12-18 22:05:59,495 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), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:05:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 26743 states and 38062 transitions. [2023-12-18 22:05:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-18 22:05:59,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:05:59,524 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] [2023-12-18 22:05:59,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 22:05:59,728 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 [2023-12-18 22:05:59,728 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:05:59,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:05:59,729 INFO L85 PathProgramCache]: Analyzing trace with hash 125794537, now seen corresponding path program 1 times [2023-12-18 22:05:59,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:05:59,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607541358] [2023-12-18 22:05:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:59,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:05:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:05:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:05:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:05:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:05:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:05:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:05:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 22:05:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-18 22:05:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:05:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-18 22:05:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 22:05:59,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:05:59,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607541358] [2023-12-18 22:05:59,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607541358] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:05:59,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2185512] [2023-12-18 22:05:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:05:59,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:05:59,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:05:59,834 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) [2023-12-18 22:05:59,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 22:05:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:05:59,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:05:59,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:05:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-18 22:05:59,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:05:59,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2185512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:05:59,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:05:59,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:05:59,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443802441] [2023-12-18 22:05:59,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:05:59,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:05:59,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:05:59,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:05:59,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:05:59,994 INFO L87 Difference]: Start difference. First operand 26743 states and 38062 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:06:00,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:00,595 INFO L93 Difference]: Finished difference Result 52491 states and 75074 transitions. [2023-12-18 22:06:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:00,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 144 [2023-12-18 22:06:00,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:00,658 INFO L225 Difference]: With dead ends: 52491 [2023-12-18 22:06:00,658 INFO L226 Difference]: Without dead ends: 27885 [2023-12-18 22:06:00,699 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 [2023-12-18 22:06:00,700 INFO L413 NwaCegarLoop]: 4108 mSDtfsCounter, 4065 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4065 SdHoareTripleChecker+Valid, 4135 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 [2023-12-18 22:06:00,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4065 Valid, 4135 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:00,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27885 states. [2023-12-18 22:06:01,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27885 to 27841. [2023-12-18 22:06:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27841 states, 23682 states have (on average 1.3691833460011824) internal successors, (32425), 23923 states have internal predecessors, (32425), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3754), 2229 states have call predecessors, (3754), 2245 states have call successors, (3754) [2023-12-18 22:06:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27841 states to 27841 states and 38424 transitions. [2023-12-18 22:06:01,577 INFO L78 Accepts]: Start accepts. Automaton has 27841 states and 38424 transitions. Word has length 144 [2023-12-18 22:06:01,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:01,577 INFO L495 AbstractCegarLoop]: Abstraction has 27841 states and 38424 transitions. [2023-12-18 22:06:01,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:06:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 27841 states and 38424 transitions. [2023-12-18 22:06:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-18 22:06:01,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:01,606 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] [2023-12-18 22:06:01,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 22:06:01,810 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 [2023-12-18 22:06:01,810 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:01,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:01,811 INFO L85 PathProgramCache]: Analyzing trace with hash -782339540, now seen corresponding path program 1 times [2023-12-18 22:06:01,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:01,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479252062] [2023-12-18 22:06:01,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:01,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:06:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 22:06:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-18 22:06:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-18 22:06:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-18 22:06:01,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:01,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479252062] [2023-12-18 22:06:01,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479252062] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:01,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345580575] [2023-12-18 22:06:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:01,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:01,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:01,906 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) [2023-12-18 22:06:01,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 22:06:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:01,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:06:01,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-18 22:06:02,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:02,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345580575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:02,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:02,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:06:02,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73817992] [2023-12-18 22:06:02,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:02,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:02,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:02,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:02,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:02,009 INFO L87 Difference]: Start difference. First operand 27841 states and 38424 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, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:06:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:03,425 INFO L93 Difference]: Finished difference Result 75539 states and 103548 transitions. [2023-12-18 22:06:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:03,425 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, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 144 [2023-12-18 22:06:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:03,536 INFO L225 Difference]: With dead ends: 75539 [2023-12-18 22:06:03,536 INFO L226 Difference]: Without dead ends: 49843 [2023-12-18 22:06:03,568 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 [2023-12-18 22:06:03,569 INFO L413 NwaCegarLoop]: 4247 mSDtfsCounter, 139 mSDsluCounter, 4107 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 8354 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 [2023-12-18 22:06:03,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 8354 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:03,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49843 states. [2023-12-18 22:06:05,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49843 to 49841. [2023-12-18 22:06:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49841 states, 41974 states have (on average 1.333468337542288) internal successors, (55971), 42455 states have internal predecessors, (55971), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2023-12-18 22:06:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49841 states to 49841 states and 68436 transitions. [2023-12-18 22:06:05,201 INFO L78 Accepts]: Start accepts. Automaton has 49841 states and 68436 transitions. Word has length 144 [2023-12-18 22:06:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:05,202 INFO L495 AbstractCegarLoop]: Abstraction has 49841 states and 68436 transitions. [2023-12-18 22:06:05,202 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, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:06:05,202 INFO L276 IsEmpty]: Start isEmpty. Operand 49841 states and 68436 transitions. [2023-12-18 22:06:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-18 22:06:05,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:05,248 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] [2023-12-18 22:06:05,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 22:06:05,452 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 [2023-12-18 22:06:05,453 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:05,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:05,453 INFO L85 PathProgramCache]: Analyzing trace with hash -873894743, now seen corresponding path program 1 times [2023-12-18 22:06:05,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:05,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910467764] [2023-12-18 22:06:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:05,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-18 22:06:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:06:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-18 22:06:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-18 22:06:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-18 22:06:05,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:05,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910467764] [2023-12-18 22:06:05,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910467764] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:05,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829750825] [2023-12-18 22:06:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:05,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:05,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:05,537 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) [2023-12-18 22:06:05,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 22:06:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:05,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:06:05,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 22:06:05,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829750825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:05,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:05,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:06:05,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17116126] [2023-12-18 22:06:05,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:05,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:05,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:05,658 INFO L87 Difference]: Start difference. First operand 49841 states and 68436 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, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:06:07,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:07,409 INFO L93 Difference]: Finished difference Result 87149 states and 119166 transitions. [2023-12-18 22:06:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:07,410 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, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 145 [2023-12-18 22:06:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:07,530 INFO L225 Difference]: With dead ends: 87149 [2023-12-18 22:06:07,530 INFO L226 Difference]: Without dead ends: 51011 [2023-12-18 22:06:07,576 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 [2023-12-18 22:06:07,576 INFO L413 NwaCegarLoop]: 4134 mSDtfsCounter, 4085 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 4275 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 [2023-12-18 22:06:07,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 4275 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:07,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51011 states. [2023-12-18 22:06:09,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51011 to 49721. [2023-12-18 22:06:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49721 states, 41854 states have (on average 1.324389544607445) internal successors, (55431), 42335 states have internal predecessors, (55431), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2023-12-18 22:06:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49721 states to 49721 states and 67896 transitions. [2023-12-18 22:06:09,445 INFO L78 Accepts]: Start accepts. Automaton has 49721 states and 67896 transitions. Word has length 145 [2023-12-18 22:06:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:09,446 INFO L495 AbstractCegarLoop]: Abstraction has 49721 states and 67896 transitions. [2023-12-18 22:06:09,446 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, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:06:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 49721 states and 67896 transitions. [2023-12-18 22:06:09,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-18 22:06:09,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:09,520 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] [2023-12-18 22:06:09,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 22:06:09,725 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 [2023-12-18 22:06:09,725 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:09,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash 133090187, now seen corresponding path program 1 times [2023-12-18 22:06:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:09,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81280549] [2023-12-18 22:06:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:09,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-18 22:06:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:06:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 22:06:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-18 22:06:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-18 22:06:09,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:09,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81280549] [2023-12-18 22:06:09,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81280549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:09,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88298496] [2023-12-18 22:06:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:09,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:09,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:09,815 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) [2023-12-18 22:06:09,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 22:06:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:09,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:06:09,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-18 22:06:09,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:09,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88298496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:09,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:09,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:06:09,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216690449] [2023-12-18 22:06:09,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:09,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:09,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:09,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:09,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:09,946 INFO L87 Difference]: Start difference. First operand 49721 states and 67896 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, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:06:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:11,336 INFO L93 Difference]: Finished difference Result 87253 states and 118366 transitions. [2023-12-18 22:06:11,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:11,336 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, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 145 [2023-12-18 22:06:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:11,537 INFO L225 Difference]: With dead ends: 87253 [2023-12-18 22:06:11,537 INFO L226 Difference]: Without dead ends: 50443 [2023-12-18 22:06:11,577 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 [2023-12-18 22:06:11,578 INFO L413 NwaCegarLoop]: 4123 mSDtfsCounter, 4085 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 4262 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 [2023-12-18 22:06:11,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 4262 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:11,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50443 states. [2023-12-18 22:06:13,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50443 to 49721. [2023-12-18 22:06:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49721 states, 41854 states have (on average 1.3172217709179528) internal successors, (55131), 42335 states have internal predecessors, (55131), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2023-12-18 22:06:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49721 states to 49721 states and 67596 transitions. [2023-12-18 22:06:13,466 INFO L78 Accepts]: Start accepts. Automaton has 49721 states and 67596 transitions. Word has length 145 [2023-12-18 22:06:13,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:13,467 INFO L495 AbstractCegarLoop]: Abstraction has 49721 states and 67596 transitions. [2023-12-18 22:06:13,467 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, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:06:13,467 INFO L276 IsEmpty]: Start isEmpty. Operand 49721 states and 67596 transitions. [2023-12-18 22:06:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-18 22:06:13,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:13,516 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] [2023-12-18 22:06:13,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 22:06:13,720 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 [2023-12-18 22:06:13,721 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:13,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash -40298357, now seen corresponding path program 1 times [2023-12-18 22:06:13,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:13,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259920168] [2023-12-18 22:06:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:13,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-18 22:06:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:06:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 22:06:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-18 22:06:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-12-18 22:06:13,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259920168] [2023-12-18 22:06:13,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259920168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:13,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:06:13,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:06:13,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877562078] [2023-12-18 22:06:13,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:13,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:06:13,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:06:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:06:13,780 INFO L87 Difference]: Start difference. First operand 49721 states and 67596 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-18 22:06:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:15,180 INFO L93 Difference]: Finished difference Result 95091 states and 127259 transitions. [2023-12-18 22:06:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:06:15,180 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 145 [2023-12-18 22:06:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:15,317 INFO L225 Difference]: With dead ends: 95091 [2023-12-18 22:06:15,317 INFO L226 Difference]: Without dead ends: 47513 [2023-12-18 22:06:15,526 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 [2023-12-18 22:06:15,527 INFO L413 NwaCegarLoop]: 4059 mSDtfsCounter, 273 mSDsluCounter, 11974 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 16033 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:15,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 16033 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 22:06:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47513 states. [2023-12-18 22:06:16,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47513 to 44823. [2023-12-18 22:06:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44823 states, 38040 states have (on average 1.3237381703470033) internal successors, (50355), 38933 states have internal predecessors, (50355), 3253 states have call successors, (3253), 2472 states have call predecessors, (3253), 3528 states have return successors, (6773), 3449 states have call predecessors, (6773), 3253 states have call successors, (6773) [2023-12-18 22:06:17,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44823 states to 44823 states and 60381 transitions. [2023-12-18 22:06:17,087 INFO L78 Accepts]: Start accepts. Automaton has 44823 states and 60381 transitions. Word has length 145 [2023-12-18 22:06:17,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:17,088 INFO L495 AbstractCegarLoop]: Abstraction has 44823 states and 60381 transitions. [2023-12-18 22:06:17,088 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-18 22:06:17,088 INFO L276 IsEmpty]: Start isEmpty. Operand 44823 states and 60381 transitions. [2023-12-18 22:06:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-18 22:06:17,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:17,121 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] [2023-12-18 22:06:17,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-18 22:06:17,121 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:17,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:17,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2081503833, now seen corresponding path program 1 times [2023-12-18 22:06:17,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:17,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77785262] [2023-12-18 22:06:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:17,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-18 22:06:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:06:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-18 22:06:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-18 22:06:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-18 22:06:17,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:17,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77785262] [2023-12-18 22:06:17,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77785262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:17,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:06:17,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:06:17,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747748806] [2023-12-18 22:06:17,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:17,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:06:17,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:17,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:06:17,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:06:17,207 INFO L87 Difference]: Start difference. First operand 44823 states and 60381 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-18 22:06:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:18,504 INFO L93 Difference]: Finished difference Result 79543 states and 106038 transitions. [2023-12-18 22:06:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:06:18,504 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 145 [2023-12-18 22:06:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:18,569 INFO L225 Difference]: With dead ends: 79543 [2023-12-18 22:06:18,569 INFO L226 Difference]: Without dead ends: 36855 [2023-12-18 22:06:18,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:06:18,604 INFO L413 NwaCegarLoop]: 4058 mSDtfsCounter, 273 mSDsluCounter, 11973 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 16031 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:18,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 16031 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 22:06:18,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36855 states. [2023-12-18 22:06:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36855 to 34305. [2023-12-18 22:06:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34305 states, 29268 states have (on average 1.3431392647259806) internal successors, (39311), 29905 states have internal predecessors, (39311), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4799), 2559 states have call predecessors, (4799), 2427 states have call successors, (4799) [2023-12-18 22:06:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34305 states to 34305 states and 46537 transitions. [2023-12-18 22:06:19,885 INFO L78 Accepts]: Start accepts. Automaton has 34305 states and 46537 transitions. Word has length 145 [2023-12-18 22:06:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:19,885 INFO L495 AbstractCegarLoop]: Abstraction has 34305 states and 46537 transitions. [2023-12-18 22:06:19,886 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, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-18 22:06:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 34305 states and 46537 transitions. [2023-12-18 22:06:19,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-18 22:06:19,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:19,913 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] [2023-12-18 22:06:19,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-18 22:06:19,914 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:19,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash 213627841, now seen corresponding path program 1 times [2023-12-18 22:06:19,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:19,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504061486] [2023-12-18 22:06:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:19,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:06:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:06:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-18 22:06:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-18 22:06:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-18 22:06:19,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:19,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504061486] [2023-12-18 22:06:19,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504061486] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:19,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770181775] [2023-12-18 22:06:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:19,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:19,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:19,994 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) [2023-12-18 22:06:20,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 22:06:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:20,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:06:20,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 22:06:20,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:20,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770181775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:20,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:20,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:06:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39376743] [2023-12-18 22:06:20,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:20,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:20,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:20,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:20,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:20,116 INFO L87 Difference]: Start difference. First operand 34305 states and 46537 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:06:21,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:21,151 INFO L93 Difference]: Finished difference Result 56199 states and 77803 transitions. [2023-12-18 22:06:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:21,152 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 149 [2023-12-18 22:06:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:21,216 INFO L225 Difference]: With dead ends: 56199 [2023-12-18 22:06:21,216 INFO L226 Difference]: Without dead ends: 34391 [2023-12-18 22:06:21,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:21,240 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 122 mSDsluCounter, 4094 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 8292 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 [2023-12-18 22:06:21,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 8292 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34391 states. [2023-12-18 22:06:22,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34391 to 34305. [2023-12-18 22:06:22,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34305 states, 29268 states have (on average 1.319564028973623) internal successors, (38621), 29905 states have internal predecessors, (38621), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4799), 2559 states have call predecessors, (4799), 2427 states have call successors, (4799) [2023-12-18 22:06:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34305 states to 34305 states and 45847 transitions. [2023-12-18 22:06:22,325 INFO L78 Accepts]: Start accepts. Automaton has 34305 states and 45847 transitions. Word has length 149 [2023-12-18 22:06:22,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:22,325 INFO L495 AbstractCegarLoop]: Abstraction has 34305 states and 45847 transitions. [2023-12-18 22:06:22,325 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:06:22,325 INFO L276 IsEmpty]: Start isEmpty. Operand 34305 states and 45847 transitions. [2023-12-18 22:06:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-18 22:06:22,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:22,350 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] [2023-12-18 22:06:22,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 22:06:22,554 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 [2023-12-18 22:06:22,555 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:22,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:22,555 INFO L85 PathProgramCache]: Analyzing trace with hash 22552195, now seen corresponding path program 1 times [2023-12-18 22:06:22,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:22,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24333686] [2023-12-18 22:06:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:22,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:06:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:06:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-18 22:06:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-18 22:06:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-18 22:06:22,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:22,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24333686] [2023-12-18 22:06:22,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24333686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:22,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122789127] [2023-12-18 22:06:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:22,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:22,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:22,631 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) [2023-12-18 22:06:22,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 22:06:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:22,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:06:22,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-18 22:06:22,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:22,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122789127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:22,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:22,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:06:22,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574299367] [2023-12-18 22:06:22,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:22,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:22,766 INFO L87 Difference]: Start difference. First operand 34305 states and 45847 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, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:06:23,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:23,660 INFO L93 Difference]: Finished difference Result 59056 states and 79662 transitions. [2023-12-18 22:06:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:23,661 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, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 149 [2023-12-18 22:06:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:23,725 INFO L225 Difference]: With dead ends: 59056 [2023-12-18 22:06:23,725 INFO L226 Difference]: Without dead ends: 29190 [2023-12-18 22:06:23,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:23,768 INFO L413 NwaCegarLoop]: 4110 mSDtfsCounter, 4100 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 4136 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 [2023-12-18 22:06:23,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4100 Valid, 4136 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:23,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29190 states. [2023-12-18 22:06:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29190 to 28076. [2023-12-18 22:06:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28076 states, 24079 states have (on average 1.2930769550230492) internal successors, (31136), 24573 states have internal predecessors, (31136), 1931 states have call successors, (1931), 1480 states have call predecessors, (1931), 2064 states have return successors, (3537), 2030 states have call predecessors, (3537), 1931 states have call successors, (3537) [2023-12-18 22:06:24,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28076 states to 28076 states and 36604 transitions. [2023-12-18 22:06:24,795 INFO L78 Accepts]: Start accepts. Automaton has 28076 states and 36604 transitions. Word has length 149 [2023-12-18 22:06:24,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:24,797 INFO L495 AbstractCegarLoop]: Abstraction has 28076 states and 36604 transitions. [2023-12-18 22:06:24,797 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, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:06:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 28076 states and 36604 transitions. [2023-12-18 22:06:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-18 22:06:24,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:24,813 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] [2023-12-18 22:06:24,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 22:06:25,017 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 [2023-12-18 22:06:25,017 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:25,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash 231065803, now seen corresponding path program 1 times [2023-12-18 22:06:25,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:25,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078204983] [2023-12-18 22:06:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:06:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:06:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-18 22:06:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-18 22:06:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-18 22:06:25,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:25,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078204983] [2023-12-18 22:06:25,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078204983] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:25,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867602926] [2023-12-18 22:06:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:25,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:25,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:25,094 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) [2023-12-18 22:06:25,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 22:06:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:25,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:06:25,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-18 22:06:25,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:25,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867602926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:25,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:25,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:06:25,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541623192] [2023-12-18 22:06:25,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:25,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:25,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:25,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:25,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:25,223 INFO L87 Difference]: Start difference. First operand 28076 states and 36604 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:06:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:25,949 INFO L93 Difference]: Finished difference Result 46492 states and 61510 transitions. [2023-12-18 22:06:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:25,950 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 149 [2023-12-18 22:06:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:26,007 INFO L225 Difference]: With dead ends: 46492 [2023-12-18 22:06:26,007 INFO L226 Difference]: Without dead ends: 28146 [2023-12-18 22:06:26,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:26,036 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 117 mSDsluCounter, 4093 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 8321 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 [2023-12-18 22:06:26,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 8321 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:26,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28146 states. [2023-12-18 22:06:26,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28146 to 28076. [2023-12-18 22:06:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28076 states, 24079 states have (on average 1.2652518792308651) internal successors, (30466), 24573 states have internal predecessors, (30466), 1931 states have call successors, (1931), 1480 states have call predecessors, (1931), 2064 states have return successors, (3537), 2030 states have call predecessors, (3537), 1931 states have call successors, (3537) [2023-12-18 22:06:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28076 states to 28076 states and 35934 transitions. [2023-12-18 22:06:26,994 INFO L78 Accepts]: Start accepts. Automaton has 28076 states and 35934 transitions. Word has length 149 [2023-12-18 22:06:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:26,994 INFO L495 AbstractCegarLoop]: Abstraction has 28076 states and 35934 transitions. [2023-12-18 22:06:26,994 INFO L496 AbstractCegarLoop]: INTERPOLANT 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:06:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 28076 states and 35934 transitions. [2023-12-18 22:06:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-18 22:06:27,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:27,011 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] [2023-12-18 22:06:27,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 22:06:27,215 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 [2023-12-18 22:06:27,216 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:27,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1895509714, now seen corresponding path program 1 times [2023-12-18 22:06:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:27,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570997108] [2023-12-18 22:06:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:27,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:06:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:06:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-18 22:06:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-18 22:06:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-18 22:06:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570997108] [2023-12-18 22:06:27,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570997108] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5998932] [2023-12-18 22:06:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:27,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:27,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:27,297 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:06:27,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 22:06:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:27,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:06:27,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-18 22:06:27,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:27,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5998932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:27,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:27,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:06:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366811336] [2023-12-18 22:06:27,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:27,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:27,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:27,399 INFO L87 Difference]: Start difference. First operand 28076 states and 35934 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:06:28,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:28,163 INFO L93 Difference]: Finished difference Result 40654 states and 52475 transitions. [2023-12-18 22:06:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:28,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 150 [2023-12-18 22:06:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:28,216 INFO L225 Difference]: With dead ends: 40654 [2023-12-18 22:06:28,216 INFO L226 Difference]: Without dead ends: 28124 [2023-12-18 22:06:28,240 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 [2023-12-18 22:06:28,241 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 135 mSDsluCounter, 4094 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 8313 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:28,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 8313 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:28,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28124 states. [2023-12-18 22:06:29,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28124 to 28076. [2023-12-18 22:06:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28076 states, 24079 states have (on average 1.2547032684081565) internal successors, (30212), 24573 states have internal predecessors, (30212), 1931 states have call successors, (1931), 1480 states have call predecessors, (1931), 2064 states have return successors, (3537), 2030 states have call predecessors, (3537), 1931 states have call successors, (3537) [2023-12-18 22:06:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28076 states to 28076 states and 35680 transitions. [2023-12-18 22:06:29,159 INFO L78 Accepts]: Start accepts. Automaton has 28076 states and 35680 transitions. Word has length 150 [2023-12-18 22:06:29,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:29,159 INFO L495 AbstractCegarLoop]: Abstraction has 28076 states and 35680 transitions. [2023-12-18 22:06:29,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:06:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 28076 states and 35680 transitions. [2023-12-18 22:06:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:06:29,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:29,176 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, 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] [2023-12-18 22:06:29,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-18 22:06:29,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:29,380 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:29,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:29,381 INFO L85 PathProgramCache]: Analyzing trace with hash -35872841, now seen corresponding path program 1 times [2023-12-18 22:06:29,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:29,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221379952] [2023-12-18 22:06:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:29,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:06:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:06:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-18 22:06:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:06:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-18 22:06:29,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:29,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221379952] [2023-12-18 22:06:29,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221379952] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:29,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104814502] [2023-12-18 22:06:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:29,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:29,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:29,483 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:06:29,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 22:06:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:29,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 22:06:29,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-18 22:06:29,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:29,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104814502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:29,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:29,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-18 22:06:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753509536] [2023-12-18 22:06:29,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:29,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:06:29,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:29,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:06:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-18 22:06:29,642 INFO L87 Difference]: Start difference. First operand 28076 states and 35680 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:06:30,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:30,366 INFO L93 Difference]: Finished difference Result 37698 states and 47779 transitions. [2023-12-18 22:06:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 22:06:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-18 22:06:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:30,403 INFO L225 Difference]: With dead ends: 37698 [2023-12-18 22:06:30,403 INFO L226 Difference]: Without dead ends: 20707 [2023-12-18 22:06:30,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-18 22:06:30,430 INFO L413 NwaCegarLoop]: 4049 mSDtfsCounter, 4122 mSDsluCounter, 8052 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4131 SdHoareTripleChecker+Valid, 12101 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:30,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4131 Valid, 12101 Invalid, 200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 22:06:30,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20707 states. [2023-12-18 22:06:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20707 to 20647. [2023-12-18 22:06:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20647 states, 17810 states have (on average 1.2582257158899495) internal successors, (22409), 18137 states have internal predecessors, (22409), 1387 states have call successors, (1387), 1056 states have call predecessors, (1387), 1448 states have return successors, (2451), 1457 states have call predecessors, (2451), 1387 states have call successors, (2451) [2023-12-18 22:06:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20647 states to 20647 states and 26247 transitions. [2023-12-18 22:06:31,161 INFO L78 Accepts]: Start accepts. Automaton has 20647 states and 26247 transitions. Word has length 151 [2023-12-18 22:06:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:31,161 INFO L495 AbstractCegarLoop]: Abstraction has 20647 states and 26247 transitions. [2023-12-18 22:06:31,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:06:31,162 INFO L276 IsEmpty]: Start isEmpty. Operand 20647 states and 26247 transitions. [2023-12-18 22:06:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:06:31,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:31,171 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, 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] [2023-12-18 22:06:31,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-18 22:06:31,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:31,376 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:31,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:31,377 INFO L85 PathProgramCache]: Analyzing trace with hash 435483509, now seen corresponding path program 1 times [2023-12-18 22:06:31,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:31,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535555061] [2023-12-18 22:06:31,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:31,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:06:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:06:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-18 22:06:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:06:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-18 22:06:31,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535555061] [2023-12-18 22:06:31,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535555061] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201480469] [2023-12-18 22:06:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:31,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:31,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:31,489 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:06:31,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 22:06:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:31,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-18 22:06:31,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-18 22:06:31,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:31,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201480469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:31,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:31,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-18 22:06:31,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083376742] [2023-12-18 22:06:31,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:31,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 22:06:31,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 22:06:31,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:06:31,591 INFO L87 Difference]: Start difference. First operand 20647 states and 26247 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:06:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:32,077 INFO L93 Difference]: Finished difference Result 33074 states and 41670 transitions. [2023-12-18 22:06:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 22:06:32,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-18 22:06:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:32,103 INFO L225 Difference]: With dead ends: 33074 [2023-12-18 22:06:32,103 INFO L226 Difference]: Without dead ends: 14557 [2023-12-18 22:06:32,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:06:32,126 INFO L413 NwaCegarLoop]: 4102 mSDtfsCounter, 20 mSDsluCounter, 8196 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12298 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:32,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12298 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:32,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14557 states. [2023-12-18 22:06:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14557 to 14285. [2023-12-18 22:06:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14285 states, 12339 states have (on average 1.275386984358538) internal successors, (15737), 12549 states have internal predecessors, (15737), 956 states have call successors, (956), 736 states have call predecessors, (956), 988 states have return successors, (1535), 1001 states have call predecessors, (1535), 956 states have call successors, (1535) [2023-12-18 22:06:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14285 states to 14285 states and 18228 transitions. [2023-12-18 22:06:32,595 INFO L78 Accepts]: Start accepts. Automaton has 14285 states and 18228 transitions. Word has length 151 [2023-12-18 22:06:32,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:32,595 INFO L495 AbstractCegarLoop]: Abstraction has 14285 states and 18228 transitions. [2023-12-18 22:06:32,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:06:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 14285 states and 18228 transitions. [2023-12-18 22:06:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:06:32,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:32,600 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, 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] [2023-12-18 22:06:32,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-18 22:06:32,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-18 22:06:32,805 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:32,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:32,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1100071361, now seen corresponding path program 1 times [2023-12-18 22:06:32,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:32,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901703912] [2023-12-18 22:06:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:32,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:06:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:06:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-18 22:06:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:06:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-18 22:06:32,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901703912] [2023-12-18 22:06:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901703912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97065311] [2023-12-18 22:06:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:32,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:32,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:32,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:06:32,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 22:06:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:32,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-18 22:06:32,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-18 22:06:32,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97065311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:32,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:32,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-18 22:06:32,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735206912] [2023-12-18 22:06:32,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:32,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 22:06:32,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:32,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 22:06:32,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:06:32,984 INFO L87 Difference]: Start difference. First operand 14285 states and 18228 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:06:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:33,313 INFO L93 Difference]: Finished difference Result 24323 states and 30365 transitions. [2023-12-18 22:06:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 22:06:33,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-18 22:06:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:33,330 INFO L225 Difference]: With dead ends: 24323 [2023-12-18 22:06:33,330 INFO L226 Difference]: Without dead ends: 12168 [2023-12-18 22:06:33,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:06:33,344 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 11 mSDsluCounter, 8196 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12297 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:33,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12297 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12168 states. [2023-12-18 22:06:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12168 to 12144. [2023-12-18 22:06:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12144 states, 10507 states have (on average 1.2785761873037023) internal successors, (13434), 10667 states have internal predecessors, (13434), 813 states have call successors, (813), 620 states have call predecessors, (813), 822 states have return successors, (1201), 858 states have call predecessors, (1201), 813 states have call successors, (1201) [2023-12-18 22:06:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12144 states to 12144 states and 15448 transitions. [2023-12-18 22:06:33,776 INFO L78 Accepts]: Start accepts. Automaton has 12144 states and 15448 transitions. Word has length 151 [2023-12-18 22:06:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:33,776 INFO L495 AbstractCegarLoop]: Abstraction has 12144 states and 15448 transitions. [2023-12-18 22:06:33,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:06:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 12144 states and 15448 transitions. [2023-12-18 22:06:33,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:06:33,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:33,780 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, 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] [2023-12-18 22:06:33,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-18 22:06:33,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:33,986 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:33,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash 197297793, now seen corresponding path program 1 times [2023-12-18 22:06:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:33,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742958261] [2023-12-18 22:06:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:33,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:06:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:06:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-18 22:06:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:06:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-18 22:06:34,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:34,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742958261] [2023-12-18 22:06:34,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742958261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:06:34,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759871985] [2023-12-18 22:06:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:06:34,113 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:06:34,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 22:06:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-18 22:06:34,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:06:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-18 22:06:34,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:06:34,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759871985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:34,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:06:34,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-18 22:06:34,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248029350] [2023-12-18 22:06:34,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:34,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 22:06:34,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 22:06:34,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:06:34,224 INFO L87 Difference]: Start difference. First operand 12144 states and 15448 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:06:34,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:34,433 INFO L93 Difference]: Finished difference Result 17051 states and 21177 transitions. [2023-12-18 22:06:34,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 22:06:34,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-18 22:06:34,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:34,441 INFO L225 Difference]: With dead ends: 17051 [2023-12-18 22:06:34,441 INFO L226 Difference]: Without dead ends: 5165 [2023-12-18 22:06:34,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:06:34,452 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 2 mSDsluCounter, 8197 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12298 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:34,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12298 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:06:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2023-12-18 22:06:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 5165. [2023-12-18 22:06:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 4671 states have (on average 1.4500107043459645) internal successors, (6773), 4693 states have internal predecessors, (6773), 276 states have call successors, (276), 200 states have call predecessors, (276), 216 states have return successors, (301), 273 states have call predecessors, (301), 276 states have call successors, (301) [2023-12-18 22:06:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 7350 transitions. [2023-12-18 22:06:34,587 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 7350 transitions. Word has length 151 [2023-12-18 22:06:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:34,588 INFO L495 AbstractCegarLoop]: Abstraction has 5165 states and 7350 transitions. [2023-12-18 22:06:34,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:06:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 7350 transitions. [2023-12-18 22:06:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-18 22:06:34,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:34,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:06:34,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-18 22:06:34,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:06:34,797 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:34,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash 944244350, now seen corresponding path program 1 times [2023-12-18 22:06:34,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:34,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015545482] [2023-12-18 22:06:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:34,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:06:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:06:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:06:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:06:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:06:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-18 22:06:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-18 22:06:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-18 22:06:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-18 22:06:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:06:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-18 22:06:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-18 22:06:34,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:34,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015545482] [2023-12-18 22:06:34,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015545482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:34,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:06:34,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:06:34,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024133987] [2023-12-18 22:06:34,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:34,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:06:34,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:34,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:06:34,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:06:34,921 INFO L87 Difference]: Start difference. First operand 5165 states and 7350 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-18 22:06:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:35,705 INFO L93 Difference]: Finished difference Result 5381 states and 7574 transitions. [2023-12-18 22:06:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:06:35,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 183 [2023-12-18 22:06:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:35,708 INFO L225 Difference]: With dead ends: 5381 [2023-12-18 22:06:35,708 INFO L226 Difference]: Without dead ends: 2122 [2023-12-18 22:06:35,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:06:35,712 INFO L413 NwaCegarLoop]: 4141 mSDtfsCounter, 4595 mSDsluCounter, 16264 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4628 SdHoareTripleChecker+Valid, 20405 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:35,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4628 Valid, 20405 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 22:06:35,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2023-12-18 22:06:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2023-12-18 22:06:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 1.866100895803866) internal successors, (3958), 2121 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3958 transitions. [2023-12-18 22:06:35,730 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3958 transitions. Word has length 183 [2023-12-18 22:06:35,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:35,730 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 3958 transitions. [2023-12-18 22:06:35,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-18 22:06:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3958 transitions. [2023-12-18 22:06:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1646 [2023-12-18 22:06:35,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:35,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:06:35,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-18 22:06:35,748 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:35,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash 531225036, now seen corresponding path program 1 times [2023-12-18 22:06:35,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:35,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372390121] [2023-12-18 22:06:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:35,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:06:37,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:37,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372390121] [2023-12-18 22:06:37,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372390121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:37,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:06:37,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 22:06:37,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11465441] [2023-12-18 22:06:37,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:37,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:37,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:37,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:37,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:06:37,140 INFO L87 Difference]: Start difference. First operand 2122 states and 3958 transitions. Second operand has 3 states, 3 states have (on average 548.3333333333334) internal successors, (1645), 2 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:42,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:42,076 INFO L93 Difference]: Finished difference Result 6057 states and 11374 transitions. [2023-12-18 22:06:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:42,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 548.3333333333334) internal successors, (1645), 2 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1645 [2023-12-18 22:06:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:42,085 INFO L225 Difference]: With dead ends: 6057 [2023-12-18 22:06:42,085 INFO L226 Difference]: Without dead ends: 3937 [2023-12-18 22:06:42,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:06:42,087 INFO L413 NwaCegarLoop]: 1262 mSDtfsCounter, 621 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4952 mSolverCounterSat, 2591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 7543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2591 IncrementalHoareTripleChecker+Valid, 4952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:42,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 1416 Invalid, 7543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2591 Valid, 4952 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-18 22:06:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2023-12-18 22:06:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3921. [2023-12-18 22:06:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3920 states have (on average 1.7311224489795918) internal successors, (6786), 3920 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 6786 transitions. [2023-12-18 22:06:42,121 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 6786 transitions. Word has length 1645 [2023-12-18 22:06:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:42,122 INFO L495 AbstractCegarLoop]: Abstraction has 3921 states and 6786 transitions. [2023-12-18 22:06:42,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 548.3333333333334) internal successors, (1645), 2 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:42,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 6786 transitions. [2023-12-18 22:06:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1657 [2023-12-18 22:06:42,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:42,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:06:42,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-18 22:06:42,142 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:42,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:42,142 INFO L85 PathProgramCache]: Analyzing trace with hash -889760769, now seen corresponding path program 1 times [2023-12-18 22:06:42,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:42,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423323978] [2023-12-18 22:06:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:42,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:06:42,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:42,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423323978] [2023-12-18 22:06:42,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423323978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:42,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:06:42,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 22:06:42,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946278356] [2023-12-18 22:06:42,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:42,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:42,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:42,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:06:42,810 INFO L87 Difference]: Start difference. First operand 3921 states and 6786 transitions. Second operand has 3 states, 3 states have (on average 552.0) internal successors, (1656), 2 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:46,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:46,680 INFO L93 Difference]: Finished difference Result 11272 states and 19663 transitions. [2023-12-18 22:06:46,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:46,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 552.0) internal successors, (1656), 2 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1656 [2023-12-18 22:06:46,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:46,690 INFO L225 Difference]: With dead ends: 11272 [2023-12-18 22:06:46,690 INFO L226 Difference]: Without dead ends: 7353 [2023-12-18 22:06:46,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:06:46,700 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 2704 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4475 mSolverCounterSat, 2374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 6849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2374 IncrementalHoareTripleChecker+Valid, 4475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:46,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 1696 Invalid, 6849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2374 Valid, 4475 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-18 22:06:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7353 states. [2023-12-18 22:06:46,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 7351. [2023-12-18 22:06:46,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 7350 states have (on average 1.5522448979591836) internal successors, (11409), 7350 states have internal predecessors, (11409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 11409 transitions. [2023-12-18 22:06:46,782 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 11409 transitions. Word has length 1656 [2023-12-18 22:06:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:46,783 INFO L495 AbstractCegarLoop]: Abstraction has 7351 states and 11409 transitions. [2023-12-18 22:06:46,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.0) internal successors, (1656), 2 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 11409 transitions. [2023-12-18 22:06:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1675 [2023-12-18 22:06:46,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:46,809 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:06:46,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-18 22:06:46,810 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:46,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2012612337, now seen corresponding path program 1 times [2023-12-18 22:06:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:46,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101151608] [2023-12-18 22:06:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:46,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-18 22:06:47,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:47,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101151608] [2023-12-18 22:06:47,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101151608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:47,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:06:47,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 22:06:47,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492473184] [2023-12-18 22:06:47,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:47,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:47,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:06:47,461 INFO L87 Difference]: Start difference. First operand 7351 states and 11409 transitions. Second operand has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 2 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:51,273 INFO L93 Difference]: Finished difference Result 21495 states and 33472 transitions. [2023-12-18 22:06:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:51,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 2 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1674 [2023-12-18 22:06:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:51,298 INFO L225 Difference]: With dead ends: 21495 [2023-12-18 22:06:51,298 INFO L226 Difference]: Without dead ends: 14146 [2023-12-18 22:06:51,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:06:51,308 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 3172 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4774 mSolverCounterSat, 2130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3172 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 6904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2130 IncrementalHoareTripleChecker+Valid, 4774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:51,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3172 Valid, 1169 Invalid, 6904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2130 Valid, 4774 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-18 22:06:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14146 states. [2023-12-18 22:06:51,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14146 to 14146. [2023-12-18 22:06:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14146 states, 14145 states have (on average 1.4808059384941676) internal successors, (20946), 14145 states have internal predecessors, (20946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14146 states to 14146 states and 20946 transitions. [2023-12-18 22:06:51,465 INFO L78 Accepts]: Start accepts. Automaton has 14146 states and 20946 transitions. Word has length 1674 [2023-12-18 22:06:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:51,466 INFO L495 AbstractCegarLoop]: Abstraction has 14146 states and 20946 transitions. [2023-12-18 22:06:51,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 2 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 14146 states and 20946 transitions. [2023-12-18 22:06:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1751 [2023-12-18 22:06:51,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:51,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:06:51,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-18 22:06:51,504 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:51,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:51,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1319913892, now seen corresponding path program 1 times [2023-12-18 22:06:51,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:51,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791102563] [2023-12-18 22:06:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:51,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:06:52,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:52,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791102563] [2023-12-18 22:06:52,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791102563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:52,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:06:52,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 22:06:52,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576837237] [2023-12-18 22:06:52,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:52,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:52,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:52,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:52,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:06:52,509 INFO L87 Difference]: Start difference. First operand 14146 states and 20946 transitions. Second operand has 3 states, 3 states have (on average 583.3333333333334) internal successors, (1750), 2 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:06:56,136 INFO L93 Difference]: Finished difference Result 35093 states and 51443 transitions. [2023-12-18 22:06:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:06:56,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 583.3333333333334) internal successors, (1750), 2 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1750 [2023-12-18 22:06:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:06:56,168 INFO L225 Difference]: With dead ends: 35093 [2023-12-18 22:06:56,168 INFO L226 Difference]: Without dead ends: 20949 [2023-12-18 22:06:56,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:06:56,186 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 2419 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 4816 mSolverCounterSat, 1700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 6516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1700 IncrementalHoareTripleChecker+Valid, 4816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:06:56,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2419 Valid, 1815 Invalid, 6516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1700 Valid, 4816 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-18 22:06:56,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20949 states. [2023-12-18 22:06:56,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20949 to 20948. [2023-12-18 22:06:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20948 states, 20947 states have (on average 1.2382680097388647) internal successors, (25938), 20947 states have internal predecessors, (25938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20948 states to 20948 states and 25938 transitions. [2023-12-18 22:06:56,399 INFO L78 Accepts]: Start accepts. Automaton has 20948 states and 25938 transitions. Word has length 1750 [2023-12-18 22:06:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:06:56,399 INFO L495 AbstractCegarLoop]: Abstraction has 20948 states and 25938 transitions. [2023-12-18 22:06:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 583.3333333333334) internal successors, (1750), 2 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:06:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 20948 states and 25938 transitions. [2023-12-18 22:06:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1755 [2023-12-18 22:06:56,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:06:56,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:06:56,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-18 22:06:56,438 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:06:56,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:06:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash -629278947, now seen corresponding path program 1 times [2023-12-18 22:06:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:06:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877274310] [2023-12-18 22:06:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:06:56,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:06:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:06:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:06:57,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:06:57,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877274310] [2023-12-18 22:06:57,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877274310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:06:57,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:06:57,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:06:57,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403060263] [2023-12-18 22:06:57,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:06:57,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:06:57,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:06:57,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:06:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:06:57,768 INFO L87 Difference]: Start difference. First operand 20948 states and 25938 transitions. Second operand has 3 states, 3 states have (on average 584.6666666666666) internal successors, (1754), 3 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:02,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:07:02,708 INFO L93 Difference]: Finished difference Result 52105 states and 65083 transitions. [2023-12-18 22:07:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:07:02,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 584.6666666666666) internal successors, (1754), 3 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1754 [2023-12-18 22:07:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:07:02,747 INFO L225 Difference]: With dead ends: 52105 [2023-12-18 22:07:02,747 INFO L226 Difference]: Without dead ends: 31159 [2023-12-18 22:07:02,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:02,767 INFO L413 NwaCegarLoop]: 3872 mSDtfsCounter, 157 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 5741 mSolverCounterSat, 1468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 4139 SdHoareTripleChecker+Invalid, 7209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1468 IncrementalHoareTripleChecker+Valid, 5741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:07:02,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 4139 Invalid, 7209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1468 Valid, 5741 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-18 22:07:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31159 states. [2023-12-18 22:07:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31159 to 31141. [2023-12-18 22:07:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31141 states, 31140 states have (on average 1.1846178548490687) internal successors, (36889), 31140 states have internal predecessors, (36889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31141 states to 31141 states and 36889 transitions. [2023-12-18 22:07:03,021 INFO L78 Accepts]: Start accepts. Automaton has 31141 states and 36889 transitions. Word has length 1754 [2023-12-18 22:07:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:07:03,022 INFO L495 AbstractCegarLoop]: Abstraction has 31141 states and 36889 transitions. [2023-12-18 22:07:03,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 584.6666666666666) internal successors, (1754), 3 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 31141 states and 36889 transitions. [2023-12-18 22:07:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1839 [2023-12-18 22:07:03,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:07:03,072 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:07:03,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-18 22:07:03,072 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:07:03,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:07:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1293107601, now seen corresponding path program 1 times [2023-12-18 22:07:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:07:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135892064] [2023-12-18 22:07:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:07:03,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:07:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:07:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-18 22:07:04,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:07:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135892064] [2023-12-18 22:07:04,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135892064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:07:04,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:07:04,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:07:04,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209739909] [2023-12-18 22:07:04,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:07:04,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:07:04,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:07:04,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:07:04,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:04,233 INFO L87 Difference]: Start difference. First operand 31141 states and 36889 transitions. Second operand has 3 states, 3 states have (on average 578.6666666666666) internal successors, (1736), 3 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:07:08,741 INFO L93 Difference]: Finished difference Result 92863 states and 109938 transitions. [2023-12-18 22:07:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:07:08,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 578.6666666666666) internal successors, (1736), 3 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1838 [2023-12-18 22:07:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:07:08,821 INFO L225 Difference]: With dead ends: 92863 [2023-12-18 22:07:08,822 INFO L226 Difference]: Without dead ends: 61724 [2023-12-18 22:07:08,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:08,854 INFO L413 NwaCegarLoop]: 3753 mSDtfsCounter, 1952 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 4800 mSolverCounterSat, 2208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 7008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2208 IncrementalHoareTripleChecker+Valid, 4800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:07:08,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1952 Valid, 3991 Invalid, 7008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2208 Valid, 4800 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-18 22:07:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61724 states. [2023-12-18 22:07:09,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61724 to 58316. [2023-12-18 22:07:09,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58316 states, 58315 states have (on average 1.1303438223441653) internal successors, (65916), 58315 states have internal predecessors, (65916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58316 states to 58316 states and 65916 transitions. [2023-12-18 22:07:09,596 INFO L78 Accepts]: Start accepts. Automaton has 58316 states and 65916 transitions. Word has length 1838 [2023-12-18 22:07:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:07:09,596 INFO L495 AbstractCegarLoop]: Abstraction has 58316 states and 65916 transitions. [2023-12-18 22:07:09,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 578.6666666666666) internal successors, (1736), 3 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 58316 states and 65916 transitions. [2023-12-18 22:07:09,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1920 [2023-12-18 22:07:09,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:07:09,661 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:07:09,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-18 22:07:09,661 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:07:09,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:07:09,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1344625470, now seen corresponding path program 1 times [2023-12-18 22:07:09,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:07:09,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221286512] [2023-12-18 22:07:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:07:09,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:07:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:07:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:07:10,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:07:10,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221286512] [2023-12-18 22:07:10,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221286512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:07:10,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:07:10,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:07:10,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220703226] [2023-12-18 22:07:10,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:07:10,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:07:10,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:07:10,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:07:10,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:10,995 INFO L87 Difference]: Start difference. First operand 58316 states and 65916 transitions. Second operand has 3 states, 3 states have (on average 639.6666666666666) internal successors, (1919), 3 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:07:16,108 INFO L93 Difference]: Finished difference Result 137027 states and 154701 transitions. [2023-12-18 22:07:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:07:16,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 639.6666666666666) internal successors, (1919), 3 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1919 [2023-12-18 22:07:16,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:07:16,219 INFO L225 Difference]: With dead ends: 137027 [2023-12-18 22:07:16,219 INFO L226 Difference]: Without dead ends: 75279 [2023-12-18 22:07:16,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:16,243 INFO L413 NwaCegarLoop]: 3876 mSDtfsCounter, 1555 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 5600 mSolverCounterSat, 947 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 947 IncrementalHoareTripleChecker+Valid, 5600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:07:16,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 4120 Invalid, 6547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [947 Valid, 5600 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-18 22:07:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75279 states. [2023-12-18 22:07:16,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75279 to 75263. [2023-12-18 22:07:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75263 states, 75262 states have (on average 1.109072307406128) internal successors, (83471), 75262 states have internal predecessors, (83471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75263 states to 75263 states and 83471 transitions. [2023-12-18 22:07:17,059 INFO L78 Accepts]: Start accepts. Automaton has 75263 states and 83471 transitions. Word has length 1919 [2023-12-18 22:07:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:07:17,059 INFO L495 AbstractCegarLoop]: Abstraction has 75263 states and 83471 transitions. [2023-12-18 22:07:17,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 639.6666666666666) internal successors, (1919), 3 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 75263 states and 83471 transitions. [2023-12-18 22:07:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1966 [2023-12-18 22:07:17,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:07:17,350 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:07:17,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-18 22:07:17,350 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:07:17,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:07:17,350 INFO L85 PathProgramCache]: Analyzing trace with hash 246068133, now seen corresponding path program 1 times [2023-12-18 22:07:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:07:17,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700316593] [2023-12-18 22:07:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:07:17,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:07:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:07:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-18 22:07:19,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:07:19,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700316593] [2023-12-18 22:07:19,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700316593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:07:19,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:07:19,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:07:19,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950002124] [2023-12-18 22:07:19,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:07:19,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:07:19,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:07:19,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:07:19,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:19,918 INFO L87 Difference]: Start difference. First operand 75263 states and 83471 transitions. Second operand has 3 states, 3 states have (on average 609.6666666666666) internal successors, (1829), 3 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:07:24,944 INFO L93 Difference]: Finished difference Result 204922 states and 228469 transitions. [2023-12-18 22:07:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:07:24,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 609.6666666666666) internal successors, (1829), 3 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1965 [2023-12-18 22:07:24,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:07:25,116 INFO L225 Difference]: With dead ends: 204922 [2023-12-18 22:07:25,116 INFO L226 Difference]: Without dead ends: 129659 [2023-12-18 22:07:25,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:25,170 INFO L413 NwaCegarLoop]: 3659 mSDtfsCounter, 1817 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 6019 mSolverCounterSat, 1360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 3843 SdHoareTripleChecker+Invalid, 7379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1360 IncrementalHoareTripleChecker+Valid, 6019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:07:25,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 3843 Invalid, 7379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1360 Valid, 6019 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-18 22:07:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129659 states. [2023-12-18 22:07:26,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129659 to 122814. [2023-12-18 22:07:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122814 states, 122813 states have (on average 1.0954052095462208) internal successors, (134530), 122813 states have internal predecessors, (134530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122814 states to 122814 states and 134530 transitions. [2023-12-18 22:07:26,579 INFO L78 Accepts]: Start accepts. Automaton has 122814 states and 134530 transitions. Word has length 1965 [2023-12-18 22:07:26,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:07:26,579 INFO L495 AbstractCegarLoop]: Abstraction has 122814 states and 134530 transitions. [2023-12-18 22:07:26,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 609.6666666666666) internal successors, (1829), 3 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:26,580 INFO L276 IsEmpty]: Start isEmpty. Operand 122814 states and 134530 transitions. [2023-12-18 22:07:26,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2002 [2023-12-18 22:07:26,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:07:26,690 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:07:26,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-18 22:07:26,690 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:07:26,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:07:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash -926152636, now seen corresponding path program 1 times [2023-12-18 22:07:26,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:07:26,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864315979] [2023-12-18 22:07:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:07:26,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:07:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:07:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-18 22:07:28,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:07:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864315979] [2023-12-18 22:07:28,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864315979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:07:28,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:07:28,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:07:28,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531168454] [2023-12-18 22:07:28,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:07:28,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:07:28,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:07:28,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:07:28,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:28,993 INFO L87 Difference]: Start difference. First operand 122814 states and 134530 transitions. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:33,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:07:33,553 INFO L93 Difference]: Finished difference Result 281298 states and 308086 transitions. [2023-12-18 22:07:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:07:33,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2001 [2023-12-18 22:07:33,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:07:33,763 INFO L225 Difference]: With dead ends: 281298 [2023-12-18 22:07:33,763 INFO L226 Difference]: Without dead ends: 158486 [2023-12-18 22:07:33,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:33,821 INFO L413 NwaCegarLoop]: 3667 mSDtfsCounter, 1724 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 4962 mSolverCounterSat, 1625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 6587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1625 IncrementalHoareTripleChecker+Valid, 4962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:07:33,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 3849 Invalid, 6587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1625 Valid, 4962 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-18 22:07:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158486 states. [2023-12-18 22:07:35,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158486 to 146584. [2023-12-18 22:07:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146584 states, 146583 states have (on average 1.0916682016332044) internal successors, (160020), 146583 states have internal predecessors, (160020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146584 states to 146584 states and 160020 transitions. [2023-12-18 22:07:35,503 INFO L78 Accepts]: Start accepts. Automaton has 146584 states and 160020 transitions. Word has length 2001 [2023-12-18 22:07:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:07:35,504 INFO L495 AbstractCegarLoop]: Abstraction has 146584 states and 160020 transitions. [2023-12-18 22:07:35,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 146584 states and 160020 transitions. [2023-12-18 22:07:35,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2025 [2023-12-18 22:07:35,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:07:35,879 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:07:35,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-18 22:07:35,879 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:07:35,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:07:35,880 INFO L85 PathProgramCache]: Analyzing trace with hash -387367313, now seen corresponding path program 1 times [2023-12-18 22:07:35,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:07:35,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523787459] [2023-12-18 22:07:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:07:35,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:07:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:07:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-18 22:07:37,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:07:37,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523787459] [2023-12-18 22:07:37,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523787459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:07:37,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:07:37,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:07:37,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938518581] [2023-12-18 22:07:37,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:07:37,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:07:37,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:07:37,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:07:37,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:37,515 INFO L87 Difference]: Start difference. First operand 146584 states and 160020 transitions. Second operand has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:42,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:07:42,861 INFO L93 Difference]: Finished difference Result 328825 states and 361939 transitions. [2023-12-18 22:07:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:07:42,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2024 [2023-12-18 22:07:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:07:43,248 INFO L225 Difference]: With dead ends: 328825 [2023-12-18 22:07:43,248 INFO L226 Difference]: Without dead ends: 182242 [2023-12-18 22:07:43,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:43,315 INFO L413 NwaCegarLoop]: 1671 mSDtfsCounter, 261 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 5532 mSolverCounterSat, 1344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 6876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1344 IncrementalHoareTripleChecker+Valid, 5532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:07:43,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1953 Invalid, 6876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1344 Valid, 5532 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-18 22:07:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182242 states. [2023-12-18 22:07:44,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182242 to 177137. [2023-12-18 22:07:45,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177137 states, 177136 states have (on average 1.0840653509168097) internal successors, (192027), 177136 states have internal predecessors, (192027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177137 states to 177137 states and 192027 transitions. [2023-12-18 22:07:45,497 INFO L78 Accepts]: Start accepts. Automaton has 177137 states and 192027 transitions. Word has length 2024 [2023-12-18 22:07:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:07:45,499 INFO L495 AbstractCegarLoop]: Abstraction has 177137 states and 192027 transitions. [2023-12-18 22:07:45,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:45,499 INFO L276 IsEmpty]: Start isEmpty. Operand 177137 states and 192027 transitions. [2023-12-18 22:07:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2175 [2023-12-18 22:07:45,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:07:45,662 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:07:45,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-18 22:07:45,662 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:07:45,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:07:45,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1991785596, now seen corresponding path program 1 times [2023-12-18 22:07:45,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:07:45,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645734622] [2023-12-18 22:07:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:07:45,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:07:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:07:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 820 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-18 22:07:47,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:07:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645734622] [2023-12-18 22:07:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645734622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:07:47,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:07:47,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:07:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480351518] [2023-12-18 22:07:47,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:07:47,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:07:47,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:07:47,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:07:47,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:47,599 INFO L87 Difference]: Start difference. First operand 177137 states and 192027 transitions. Second operand has 3 states, 3 states have (on average 640.0) internal successors, (1920), 3 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:07:53,758 INFO L93 Difference]: Finished difference Result 420567 states and 457236 transitions. [2023-12-18 22:07:53,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:07:53,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 640.0) internal successors, (1920), 3 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2174 [2023-12-18 22:07:53,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:07:54,285 INFO L225 Difference]: With dead ends: 420567 [2023-12-18 22:07:54,286 INFO L226 Difference]: Without dead ends: 243432 [2023-12-18 22:07:54,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:07:54,359 INFO L413 NwaCegarLoop]: 3770 mSDtfsCounter, 1805 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 5292 mSolverCounterSat, 1882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 3993 SdHoareTripleChecker+Invalid, 7174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1882 IncrementalHoareTripleChecker+Valid, 5292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:07:54,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 3993 Invalid, 7174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1882 Valid, 5292 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-18 22:07:54,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243432 states. [2023-12-18 22:07:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243432 to 238269. [2023-12-18 22:07:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238269 states, 238268 states have (on average 1.0722883475749996) internal successors, (255492), 238268 states have internal predecessors, (255492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:57,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238269 states to 238269 states and 255492 transitions. [2023-12-18 22:07:57,393 INFO L78 Accepts]: Start accepts. Automaton has 238269 states and 255492 transitions. Word has length 2174 [2023-12-18 22:07:57,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:07:57,393 INFO L495 AbstractCegarLoop]: Abstraction has 238269 states and 255492 transitions. [2023-12-18 22:07:57,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 640.0) internal successors, (1920), 3 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:07:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 238269 states and 255492 transitions.