/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 22:38:43,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 22:38:43,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 22:38:43,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 22:38:43,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 22:38:43,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 22:38:43,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 22:38:43,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 22:38:43,427 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 22:38:43,429 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 22:38:43,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 22:38:43,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 22:38:43,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 22:38:43,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 22:38:43,432 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 22:38:43,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 22:38:43,432 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 22:38:43,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 22:38:43,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 22:38:43,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 22:38:43,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 22:38:43,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 22:38:43,434 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 22:38:43,434 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 22:38:43,434 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 22:38:43,435 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 22:38:43,435 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 22:38:43,435 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 22:38:43,435 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 22:38:43,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 22:38:43,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 22:38:43,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 22:38:43,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 22:38:43,436 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 22:38:43,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 22:38:43,437 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 22:38:43,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 22:38:43,437 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 22:38:43,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 22:38:43,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 22:38:43,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 22:38:43,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 22:38:43,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 22:38:43,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 22:38:43,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 22:38:43,641 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 22:38:43,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c [2023-12-25 22:38:44,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 22:38:45,027 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 22:38:45,028 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c [2023-12-25 22:38:45,057 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6d4afe9/216f5b50f8f24b5081dcf5a68ace302e/FLAGf2084b7e2 [2023-12-25 22:38:45,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6d4afe9/216f5b50f8f24b5081dcf5a68ace302e [2023-12-25 22:38:45,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 22:38:45,074 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 22:38:45,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 22:38:45,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 22:38:45,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 22:38:45,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:38:45" (1/1) ... [2023-12-25 22:38:45,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57233d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:45, skipping insertion in model container [2023-12-25 22:38:45,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:38:45" (1/1) ... [2023-12-25 22:38:45,188 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 22:38:45,384 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c[1177,1190] [2023-12-25 22:38:46,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 22:38:46,032 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 22:38:46,041 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-back-serstep.c[1177,1190] [2023-12-25 22:38:46,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 22:38:46,381 INFO L206 MainTranslator]: Completed translation [2023-12-25 22:38:46,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46 WrapperNode [2023-12-25 22:38:46,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 22:38:46,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 22:38:46,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 22:38:46,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 22:38:46,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:46,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:48,589 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28653 [2023-12-25 22:38:48,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 22:38:48,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 22:38:48,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 22:38:48,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 22:38:48,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:48,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:49,213 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:49,593 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]. [2023-12-25 22:38:49,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:49,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:50,333 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:50,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:50,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:50,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:51,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 22:38:51,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 22:38:51,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 22:38:51,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 22:38:51,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (1/1) ... [2023-12-25 22:38:51,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 22:38:51,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:38:51,073 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) [2023-12-25 22:38:51,076 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 [2023-12-25 22:38:51,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 22:38:51,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 22:38:51,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 22:38:51,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 22:38:51,982 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 22:38:51,984 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 22:39:01,664 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 22:39:02,089 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 22:39:02,089 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 22:39:02,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:39:02 BoogieIcfgContainer [2023-12-25 22:39:02,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 22:39:02,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 22:39:02,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 22:39:02,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 22:39:02,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 10:38:45" (1/3) ... [2023-12-25 22:39:02,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ea2143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:39:02, skipping insertion in model container [2023-12-25 22:39:02,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:46" (2/3) ... [2023-12-25 22:39:02,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ea2143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:39:02, skipping insertion in model container [2023-12-25 22:39:02,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:39:02" (3/3) ... [2023-12-25 22:39:02,096 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.4.prop1-back-serstep.c [2023-12-25 22:39:02,108 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 22:39:02,108 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 22:39:02,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 22:39:02,213 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;@5420eaa6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 22:39:02,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 22:39:02,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 6590 states, 6588 states have (on average 1.6703096539162112) internal successors, (11004), 6589 states have internal predecessors, (11004), 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) [2023-12-25 22:39:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-12-25 22:39:02,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:02,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:02,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:02,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:02,267 INFO L85 PathProgramCache]: Analyzing trace with hash 293776830, now seen corresponding path program 1 times [2023-12-25 22:39:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:02,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554526959] [2023-12-25 22:39:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:02,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:04,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:04,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554526959] [2023-12-25 22:39:04,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554526959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:04,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:04,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258597255] [2023-12-25 22:39:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:04,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:04,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:04,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:04,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:04,537 INFO L87 Difference]: Start difference. First operand has 6590 states, 6588 states have (on average 1.6703096539162112) internal successors, (11004), 6589 states have internal predecessors, (11004), 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) Second operand has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 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) [2023-12-25 22:39:04,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:04,760 INFO L93 Difference]: Finished difference Result 12957 states and 21639 transitions. [2023-12-25 22:39:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:04,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 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 698 [2023-12-25 22:39:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:04,795 INFO L225 Difference]: With dead ends: 12957 [2023-12-25 22:39:04,795 INFO L226 Difference]: Without dead ends: 6590 [2023-12-25 22:39:04,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:04,813 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 1 mSDsluCounter, 21989 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32986 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:04,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32986 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:04,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2023-12-25 22:39:04,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6590. [2023-12-25 22:39:04,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6590 states, 6589 states have (on average 1.6697526179996964) internal successors, (11002), 6589 states have internal predecessors, (11002), 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) [2023-12-25 22:39:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 11002 transitions. [2023-12-25 22:39:04,977 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 11002 transitions. Word has length 698 [2023-12-25 22:39:04,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:04,979 INFO L495 AbstractCegarLoop]: Abstraction has 6590 states and 11002 transitions. [2023-12-25 22:39:04,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 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) [2023-12-25 22:39:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 11002 transitions. [2023-12-25 22:39:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2023-12-25 22:39:04,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:04,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:04,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 22:39:04,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:04,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:04,991 INFO L85 PathProgramCache]: Analyzing trace with hash 518876250, now seen corresponding path program 1 times [2023-12-25 22:39:04,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:04,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183279378] [2023-12-25 22:39:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:04,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:06,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:06,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183279378] [2023-12-25 22:39:06,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183279378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:06,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:06,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:06,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171782603] [2023-12-25 22:39:06,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:06,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:06,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:06,101 INFO L87 Difference]: Start difference. First operand 6590 states and 11002 transitions. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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) [2023-12-25 22:39:06,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:06,263 INFO L93 Difference]: Finished difference Result 12960 states and 21637 transitions. [2023-12-25 22:39:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:06,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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 699 [2023-12-25 22:39:06,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:06,283 INFO L225 Difference]: With dead ends: 12960 [2023-12-25 22:39:06,283 INFO L226 Difference]: Without dead ends: 6593 [2023-12-25 22:39:06,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:06,292 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 1 mSDsluCounter, 21987 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32984 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:06,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32984 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:06,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6593 states. [2023-12-25 22:39:06,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6593 to 6592. [2023-12-25 22:39:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6592 states, 6591 states have (on average 1.6695493855257169) internal successors, (11004), 6591 states have internal predecessors, (11004), 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) [2023-12-25 22:39:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 11004 transitions. [2023-12-25 22:39:06,416 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 11004 transitions. Word has length 699 [2023-12-25 22:39:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:06,417 INFO L495 AbstractCegarLoop]: Abstraction has 6592 states and 11004 transitions. [2023-12-25 22:39:06,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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) [2023-12-25 22:39:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 11004 transitions. [2023-12-25 22:39:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-12-25 22:39:06,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:06,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:06,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 22:39:06,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:06,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash 469873626, now seen corresponding path program 1 times [2023-12-25 22:39:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:06,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364663421] [2023-12-25 22:39:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:06,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:07,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:07,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364663421] [2023-12-25 22:39:07,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364663421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:07,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:07,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:07,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575792396] [2023-12-25 22:39:07,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:07,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:07,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:07,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:07,491 INFO L87 Difference]: Start difference. First operand 6592 states and 11004 transitions. Second operand has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2023-12-25 22:39:07,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:07,742 INFO L93 Difference]: Finished difference Result 19324 states and 32261 transitions. [2023-12-25 22:39:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:07,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 700 [2023-12-25 22:39:07,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:07,784 INFO L225 Difference]: With dead ends: 19324 [2023-12-25 22:39:07,785 INFO L226 Difference]: Without dead ends: 12955 [2023-12-25 22:39:07,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:07,796 INFO L413 NwaCegarLoop]: 12352 mSDtfsCounter, 10620 mSDsluCounter, 23340 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10620 SdHoareTripleChecker+Valid, 35692 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:07,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10620 Valid, 35692 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12955 states. [2023-12-25 22:39:07,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12955 to 6594. [2023-12-25 22:39:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6594 states, 6593 states have (on average 1.6693462763537086) internal successors, (11006), 6593 states have internal predecessors, (11006), 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) [2023-12-25 22:39:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6594 states to 6594 states and 11006 transitions. [2023-12-25 22:39:07,938 INFO L78 Accepts]: Start accepts. Automaton has 6594 states and 11006 transitions. Word has length 700 [2023-12-25 22:39:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:07,939 INFO L495 AbstractCegarLoop]: Abstraction has 6594 states and 11006 transitions. [2023-12-25 22:39:07,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2023-12-25 22:39:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 6594 states and 11006 transitions. [2023-12-25 22:39:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-12-25 22:39:07,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:07,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 22:39:07,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:07,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1570478146, now seen corresponding path program 1 times [2023-12-25 22:39:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:07,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973232722] [2023-12-25 22:39:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:08,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:08,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973232722] [2023-12-25 22:39:08,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973232722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:08,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:08,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:08,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510072912] [2023-12-25 22:39:08,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:08,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:08,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:08,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:08,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:08,930 INFO L87 Difference]: Start difference. First operand 6594 states and 11006 transitions. Second operand has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 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) [2023-12-25 22:39:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:09,179 INFO L93 Difference]: Finished difference Result 19327 states and 32262 transitions. [2023-12-25 22:39:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:09,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 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 701 [2023-12-25 22:39:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:09,200 INFO L225 Difference]: With dead ends: 19327 [2023-12-25 22:39:09,201 INFO L226 Difference]: Without dead ends: 12956 [2023-12-25 22:39:09,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:09,212 INFO L413 NwaCegarLoop]: 12347 mSDtfsCounter, 10617 mSDsluCounter, 33951 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10617 SdHoareTripleChecker+Valid, 46298 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:09,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10617 Valid, 46298 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12956 states. [2023-12-25 22:39:09,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12956 to 6596. [2023-12-25 22:39:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6596 states, 6595 states have (on average 1.6691432903714936) internal successors, (11008), 6595 states have internal predecessors, (11008), 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) [2023-12-25 22:39:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6596 states to 6596 states and 11008 transitions. [2023-12-25 22:39:09,349 INFO L78 Accepts]: Start accepts. Automaton has 6596 states and 11008 transitions. Word has length 701 [2023-12-25 22:39:09,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:09,350 INFO L495 AbstractCegarLoop]: Abstraction has 6596 states and 11008 transitions. [2023-12-25 22:39:09,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 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) [2023-12-25 22:39:09,351 INFO L276 IsEmpty]: Start isEmpty. Operand 6596 states and 11008 transitions. [2023-12-25 22:39:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2023-12-25 22:39:09,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:09,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:09,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 22:39:09,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:09,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:09,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1241383284, now seen corresponding path program 1 times [2023-12-25 22:39:09,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:09,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907289584] [2023-12-25 22:39:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:10,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:10,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907289584] [2023-12-25 22:39:10,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907289584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:10,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:10,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:10,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730630272] [2023-12-25 22:39:10,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:10,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:10,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:10,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:10,160 INFO L87 Difference]: Start difference. First operand 6596 states and 11008 transitions. Second operand has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 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) [2023-12-25 22:39:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:10,361 INFO L93 Difference]: Finished difference Result 19330 states and 32263 transitions. [2023-12-25 22:39:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:10,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 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 702 [2023-12-25 22:39:10,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:10,382 INFO L225 Difference]: With dead ends: 19330 [2023-12-25 22:39:10,382 INFO L226 Difference]: Without dead ends: 12957 [2023-12-25 22:39:10,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:10,395 INFO L413 NwaCegarLoop]: 12342 mSDtfsCounter, 10614 mSDsluCounter, 23330 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10614 SdHoareTripleChecker+Valid, 35672 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:10,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10614 Valid, 35672 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12957 states. [2023-12-25 22:39:10,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12957 to 6598. [2023-12-25 22:39:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6598 states, 6597 states have (on average 1.6689404274670305) internal successors, (11010), 6597 states have internal predecessors, (11010), 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) [2023-12-25 22:39:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6598 states to 6598 states and 11010 transitions. [2023-12-25 22:39:10,520 INFO L78 Accepts]: Start accepts. Automaton has 6598 states and 11010 transitions. Word has length 702 [2023-12-25 22:39:10,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:10,521 INFO L495 AbstractCegarLoop]: Abstraction has 6598 states and 11010 transitions. [2023-12-25 22:39:10,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 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) [2023-12-25 22:39:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6598 states and 11010 transitions. [2023-12-25 22:39:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2023-12-25 22:39:10,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:10,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:10,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 22:39:10,527 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:10,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash -631832664, now seen corresponding path program 1 times [2023-12-25 22:39:10,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:10,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009159439] [2023-12-25 22:39:10,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:10,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:11,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:11,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009159439] [2023-12-25 22:39:11,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009159439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:11,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:11,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:11,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711576461] [2023-12-25 22:39:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:11,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:11,340 INFO L87 Difference]: Start difference. First operand 6598 states and 11010 transitions. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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) [2023-12-25 22:39:11,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:11,686 INFO L93 Difference]: Finished difference Result 19333 states and 32264 transitions. [2023-12-25 22:39:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:11,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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 703 [2023-12-25 22:39:11,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:11,702 INFO L225 Difference]: With dead ends: 19333 [2023-12-25 22:39:11,703 INFO L226 Difference]: Without dead ends: 12958 [2023-12-25 22:39:11,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:11,709 INFO L413 NwaCegarLoop]: 12337 mSDtfsCounter, 10611 mSDsluCounter, 23325 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10611 SdHoareTripleChecker+Valid, 35662 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:11,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10611 Valid, 35662 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12958 states. [2023-12-25 22:39:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12958 to 6600. [2023-12-25 22:39:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6600 states, 6599 states have (on average 1.6687376875284134) internal successors, (11012), 6599 states have internal predecessors, (11012), 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) [2023-12-25 22:39:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 11012 transitions. [2023-12-25 22:39:11,806 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 11012 transitions. Word has length 703 [2023-12-25 22:39:11,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:11,807 INFO L495 AbstractCegarLoop]: Abstraction has 6600 states and 11012 transitions. [2023-12-25 22:39:11,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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) [2023-12-25 22:39:11,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 11012 transitions. [2023-12-25 22:39:11,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2023-12-25 22:39:11,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:11,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:11,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 22:39:11,813 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:11,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash 518123664, now seen corresponding path program 1 times [2023-12-25 22:39:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:11,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100009427] [2023-12-25 22:39:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:11,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:12,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:12,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100009427] [2023-12-25 22:39:12,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100009427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:12,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:12,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:12,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913710270] [2023-12-25 22:39:12,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:12,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:12,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:12,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:12,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:12,576 INFO L87 Difference]: Start difference. First operand 6600 states and 11012 transitions. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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) [2023-12-25 22:39:12,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:12,767 INFO L93 Difference]: Finished difference Result 19336 states and 32265 transitions. [2023-12-25 22:39:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:12,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 704 [2023-12-25 22:39:12,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:12,786 INFO L225 Difference]: With dead ends: 19336 [2023-12-25 22:39:12,786 INFO L226 Difference]: Without dead ends: 12959 [2023-12-25 22:39:12,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:12,797 INFO L413 NwaCegarLoop]: 12332 mSDtfsCounter, 10608 mSDsluCounter, 23320 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10608 SdHoareTripleChecker+Valid, 35652 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:12,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10608 Valid, 35652 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12959 states. [2023-12-25 22:39:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12959 to 6602. [2023-12-25 22:39:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6602 states, 6601 states have (on average 1.6685350704438722) internal successors, (11014), 6601 states have internal predecessors, (11014), 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) [2023-12-25 22:39:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6602 states to 6602 states and 11014 transitions. [2023-12-25 22:39:12,911 INFO L78 Accepts]: Start accepts. Automaton has 6602 states and 11014 transitions. Word has length 704 [2023-12-25 22:39:12,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:12,912 INFO L495 AbstractCegarLoop]: Abstraction has 6602 states and 11014 transitions. [2023-12-25 22:39:12,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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) [2023-12-25 22:39:12,912 INFO L276 IsEmpty]: Start isEmpty. Operand 6602 states and 11014 transitions. [2023-12-25 22:39:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-25 22:39:12,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:12,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:12,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 22:39:12,917 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:12,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:12,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1368898704, now seen corresponding path program 1 times [2023-12-25 22:39:12,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:12,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848428821] [2023-12-25 22:39:12,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:12,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:13,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:13,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:13,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848428821] [2023-12-25 22:39:13,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848428821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:13,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:13,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:13,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389164186] [2023-12-25 22:39:13,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:13,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:13,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:13,731 INFO L87 Difference]: Start difference. First operand 6602 states and 11014 transitions. Second operand has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-12-25 22:39:13,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:13,991 INFO L93 Difference]: Finished difference Result 19339 states and 32266 transitions. [2023-12-25 22:39:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:13,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 705 [2023-12-25 22:39:13,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:14,013 INFO L225 Difference]: With dead ends: 19339 [2023-12-25 22:39:14,014 INFO L226 Difference]: Without dead ends: 12960 [2023-12-25 22:39:14,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:14,025 INFO L413 NwaCegarLoop]: 12327 mSDtfsCounter, 10605 mSDsluCounter, 35639 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10605 SdHoareTripleChecker+Valid, 47966 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:14,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10605 Valid, 47966 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12960 states. [2023-12-25 22:39:14,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12960 to 6604. [2023-12-25 22:39:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6604 states, 6603 states have (on average 1.668332576101772) internal successors, (11016), 6603 states have internal predecessors, (11016), 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) [2023-12-25 22:39:14,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6604 states to 6604 states and 11016 transitions. [2023-12-25 22:39:14,156 INFO L78 Accepts]: Start accepts. Automaton has 6604 states and 11016 transitions. Word has length 705 [2023-12-25 22:39:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:14,157 INFO L495 AbstractCegarLoop]: Abstraction has 6604 states and 11016 transitions. [2023-12-25 22:39:14,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-12-25 22:39:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand 6604 states and 11016 transitions. [2023-12-25 22:39:14,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2023-12-25 22:39:14,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:14,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:14,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 22:39:14,164 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:14,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:14,164 INFO L85 PathProgramCache]: Analyzing trace with hash 160242218, now seen corresponding path program 1 times [2023-12-25 22:39:14,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:14,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551553749] [2023-12-25 22:39:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:14,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:15,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551553749] [2023-12-25 22:39:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551553749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:15,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:15,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:15,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586850670] [2023-12-25 22:39:15,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:15,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:15,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:15,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:15,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:15,073 INFO L87 Difference]: Start difference. First operand 6604 states and 11016 transitions. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 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) [2023-12-25 22:39:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:15,277 INFO L93 Difference]: Finished difference Result 19342 states and 32267 transitions. [2023-12-25 22:39:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:15,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 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 706 [2023-12-25 22:39:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:15,300 INFO L225 Difference]: With dead ends: 19342 [2023-12-25 22:39:15,300 INFO L226 Difference]: Without dead ends: 12961 [2023-12-25 22:39:15,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:15,311 INFO L413 NwaCegarLoop]: 12322 mSDtfsCounter, 10602 mSDsluCounter, 23310 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10602 SdHoareTripleChecker+Valid, 35632 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:15,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10602 Valid, 35632 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:15,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2023-12-25 22:39:15,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 6606. [2023-12-25 22:39:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6606 states, 6605 states have (on average 1.6681302043906132) internal successors, (11018), 6605 states have internal predecessors, (11018), 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) [2023-12-25 22:39:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6606 states to 6606 states and 11018 transitions. [2023-12-25 22:39:15,438 INFO L78 Accepts]: Start accepts. Automaton has 6606 states and 11018 transitions. Word has length 706 [2023-12-25 22:39:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:15,439 INFO L495 AbstractCegarLoop]: Abstraction has 6606 states and 11018 transitions. [2023-12-25 22:39:15,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 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) [2023-12-25 22:39:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 6606 states and 11018 transitions. [2023-12-25 22:39:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2023-12-25 22:39:15,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:15,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:15,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 22:39:15,447 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:15,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:15,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1211422730, now seen corresponding path program 1 times [2023-12-25 22:39:15,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:15,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990148526] [2023-12-25 22:39:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:16,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:16,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990148526] [2023-12-25 22:39:16,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990148526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:16,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:16,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:16,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369153919] [2023-12-25 22:39:16,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:16,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:16,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:16,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:16,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:16,388 INFO L87 Difference]: Start difference. First operand 6606 states and 11018 transitions. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 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) [2023-12-25 22:39:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:16,556 INFO L93 Difference]: Finished difference Result 19345 states and 32268 transitions. [2023-12-25 22:39:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:16,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 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 707 [2023-12-25 22:39:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:16,577 INFO L225 Difference]: With dead ends: 19345 [2023-12-25 22:39:16,577 INFO L226 Difference]: Without dead ends: 12962 [2023-12-25 22:39:16,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:16,588 INFO L413 NwaCegarLoop]: 12317 mSDtfsCounter, 10599 mSDsluCounter, 23305 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10599 SdHoareTripleChecker+Valid, 35622 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:16,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10599 Valid, 35622 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:16,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2023-12-25 22:39:16,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 6608. [2023-12-25 22:39:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6608 states, 6607 states have (on average 1.6679279551990314) internal successors, (11020), 6607 states have internal predecessors, (11020), 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) [2023-12-25 22:39:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6608 states to 6608 states and 11020 transitions. [2023-12-25 22:39:16,702 INFO L78 Accepts]: Start accepts. Automaton has 6608 states and 11020 transitions. Word has length 707 [2023-12-25 22:39:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:16,703 INFO L495 AbstractCegarLoop]: Abstraction has 6608 states and 11020 transitions. [2023-12-25 22:39:16,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 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) [2023-12-25 22:39:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6608 states and 11020 transitions. [2023-12-25 22:39:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2023-12-25 22:39:16,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:16,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:16,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 22:39:16,708 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:16,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:16,709 INFO L85 PathProgramCache]: Analyzing trace with hash -437325242, now seen corresponding path program 1 times [2023-12-25 22:39:16,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:16,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113525571] [2023-12-25 22:39:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:16,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:17,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:17,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:17,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113525571] [2023-12-25 22:39:17,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113525571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:17,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:17,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:17,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228713009] [2023-12-25 22:39:17,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:17,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:17,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:17,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:17,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:17,498 INFO L87 Difference]: Start difference. First operand 6608 states and 11020 transitions. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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) [2023-12-25 22:39:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:17,665 INFO L93 Difference]: Finished difference Result 19348 states and 32269 transitions. [2023-12-25 22:39:17,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:17,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 708 [2023-12-25 22:39:17,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:17,689 INFO L225 Difference]: With dead ends: 19348 [2023-12-25 22:39:17,689 INFO L226 Difference]: Without dead ends: 12963 [2023-12-25 22:39:17,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:17,698 INFO L413 NwaCegarLoop]: 12312 mSDtfsCounter, 10596 mSDsluCounter, 23300 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10596 SdHoareTripleChecker+Valid, 35612 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:17,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10596 Valid, 35612 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12963 states. [2023-12-25 22:39:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12963 to 6610. [2023-12-25 22:39:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6610 states, 6609 states have (on average 1.6677258284157968) internal successors, (11022), 6609 states have internal predecessors, (11022), 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) [2023-12-25 22:39:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6610 states to 6610 states and 11022 transitions. [2023-12-25 22:39:17,801 INFO L78 Accepts]: Start accepts. Automaton has 6610 states and 11022 transitions. Word has length 708 [2023-12-25 22:39:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:17,802 INFO L495 AbstractCegarLoop]: Abstraction has 6610 states and 11022 transitions. [2023-12-25 22:39:17,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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) [2023-12-25 22:39:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 6610 states and 11022 transitions. [2023-12-25 22:39:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2023-12-25 22:39:17,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:17,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:17,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 22:39:17,807 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:17,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash 653161950, now seen corresponding path program 1 times [2023-12-25 22:39:17,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:17,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59807610] [2023-12-25 22:39:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:17,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:18,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:18,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59807610] [2023-12-25 22:39:18,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59807610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:18,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:18,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:18,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325397789] [2023-12-25 22:39:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:18,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:18,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:18,508 INFO L87 Difference]: Start difference. First operand 6610 states and 11022 transitions. Second operand has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 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) [2023-12-25 22:39:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:18,673 INFO L93 Difference]: Finished difference Result 19351 states and 32270 transitions. [2023-12-25 22:39:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:18,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 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 709 [2023-12-25 22:39:18,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:18,693 INFO L225 Difference]: With dead ends: 19351 [2023-12-25 22:39:18,693 INFO L226 Difference]: Without dead ends: 12964 [2023-12-25 22:39:18,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:18,702 INFO L413 NwaCegarLoop]: 12307 mSDtfsCounter, 10593 mSDsluCounter, 23295 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10593 SdHoareTripleChecker+Valid, 35602 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:18,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10593 Valid, 35602 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12964 states. [2023-12-25 22:39:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12964 to 6612. [2023-12-25 22:39:18,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6612 states, 6611 states have (on average 1.667523823929814) internal successors, (11024), 6611 states have internal predecessors, (11024), 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) [2023-12-25 22:39:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6612 states to 6612 states and 11024 transitions. [2023-12-25 22:39:18,798 INFO L78 Accepts]: Start accepts. Automaton has 6612 states and 11024 transitions. Word has length 709 [2023-12-25 22:39:18,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:18,799 INFO L495 AbstractCegarLoop]: Abstraction has 6612 states and 11024 transitions. [2023-12-25 22:39:18,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 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) [2023-12-25 22:39:18,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6612 states and 11024 transitions. [2023-12-25 22:39:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2023-12-25 22:39:18,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:18,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:18,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 22:39:18,804 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:18,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:18,804 INFO L85 PathProgramCache]: Analyzing trace with hash 846034912, now seen corresponding path program 1 times [2023-12-25 22:39:18,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:18,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375674565] [2023-12-25 22:39:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:18,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:19,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:19,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375674565] [2023-12-25 22:39:19,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375674565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:19,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:19,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:19,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595436658] [2023-12-25 22:39:19,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:19,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:19,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:19,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:19,533 INFO L87 Difference]: Start difference. First operand 6612 states and 11024 transitions. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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) [2023-12-25 22:39:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:19,727 INFO L93 Difference]: Finished difference Result 19354 states and 32271 transitions. [2023-12-25 22:39:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:19,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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 710 [2023-12-25 22:39:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:19,746 INFO L225 Difference]: With dead ends: 19354 [2023-12-25 22:39:19,746 INFO L226 Difference]: Without dead ends: 12965 [2023-12-25 22:39:19,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:19,755 INFO L413 NwaCegarLoop]: 12302 mSDtfsCounter, 10590 mSDsluCounter, 33879 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10590 SdHoareTripleChecker+Valid, 46181 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:19,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10590 Valid, 46181 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12965 states. [2023-12-25 22:39:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12965 to 6614. [2023-12-25 22:39:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6614 states, 6613 states have (on average 1.6673219416301226) internal successors, (11026), 6613 states have internal predecessors, (11026), 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) [2023-12-25 22:39:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6614 states to 6614 states and 11026 transitions. [2023-12-25 22:39:19,858 INFO L78 Accepts]: Start accepts. Automaton has 6614 states and 11026 transitions. Word has length 710 [2023-12-25 22:39:19,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:19,859 INFO L495 AbstractCegarLoop]: Abstraction has 6614 states and 11026 transitions. [2023-12-25 22:39:19,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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) [2023-12-25 22:39:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 6614 states and 11026 transitions. [2023-12-25 22:39:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2023-12-25 22:39:19,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:19,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:19,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 22:39:19,865 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:19,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:19,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2146788676, now seen corresponding path program 1 times [2023-12-25 22:39:19,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:19,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769511827] [2023-12-25 22:39:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:19,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:20,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:20,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769511827] [2023-12-25 22:39:20,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769511827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:20,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:20,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:20,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449500917] [2023-12-25 22:39:20,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:20,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:20,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:20,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:20,656 INFO L87 Difference]: Start difference. First operand 6614 states and 11026 transitions. Second operand has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 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) [2023-12-25 22:39:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:20,852 INFO L93 Difference]: Finished difference Result 19357 states and 32272 transitions. [2023-12-25 22:39:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 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 711 [2023-12-25 22:39:20,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:20,870 INFO L225 Difference]: With dead ends: 19357 [2023-12-25 22:39:20,870 INFO L226 Difference]: Without dead ends: 12966 [2023-12-25 22:39:20,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:20,879 INFO L413 NwaCegarLoop]: 12297 mSDtfsCounter, 10587 mSDsluCounter, 33871 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10587 SdHoareTripleChecker+Valid, 46168 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:20,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10587 Valid, 46168 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2023-12-25 22:39:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 6616. [2023-12-25 22:39:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6616 states, 6615 states have (on average 1.6671201814058958) internal successors, (11028), 6615 states have internal predecessors, (11028), 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) [2023-12-25 22:39:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6616 states to 6616 states and 11028 transitions. [2023-12-25 22:39:20,979 INFO L78 Accepts]: Start accepts. Automaton has 6616 states and 11028 transitions. Word has length 711 [2023-12-25 22:39:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:20,980 INFO L495 AbstractCegarLoop]: Abstraction has 6616 states and 11028 transitions. [2023-12-25 22:39:20,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 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) [2023-12-25 22:39:20,980 INFO L276 IsEmpty]: Start isEmpty. Operand 6616 states and 11028 transitions. [2023-12-25 22:39:20,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2023-12-25 22:39:20,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:20,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:20,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 22:39:20,984 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:20,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:20,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1163511556, now seen corresponding path program 1 times [2023-12-25 22:39:20,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:20,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239662726] [2023-12-25 22:39:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:20,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:21,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:21,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239662726] [2023-12-25 22:39:21,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239662726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:21,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:21,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:21,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484311591] [2023-12-25 22:39:21,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:21,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:21,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:21,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:21,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:21,663 INFO L87 Difference]: Start difference. First operand 6616 states and 11028 transitions. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-12-25 22:39:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:21,822 INFO L93 Difference]: Finished difference Result 19360 states and 32273 transitions. [2023-12-25 22:39:21,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:21,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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 712 [2023-12-25 22:39:21,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:21,840 INFO L225 Difference]: With dead ends: 19360 [2023-12-25 22:39:21,840 INFO L226 Difference]: Without dead ends: 12967 [2023-12-25 22:39:21,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:21,849 INFO L413 NwaCegarLoop]: 12292 mSDtfsCounter, 10584 mSDsluCounter, 23280 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10584 SdHoareTripleChecker+Valid, 35572 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:21,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10584 Valid, 35572 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:21,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12967 states. [2023-12-25 22:39:21,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12967 to 6618. [2023-12-25 22:39:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6618 states, 6617 states have (on average 1.666918543146441) internal successors, (11030), 6617 states have internal predecessors, (11030), 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) [2023-12-25 22:39:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6618 states to 6618 states and 11030 transitions. [2023-12-25 22:39:21,947 INFO L78 Accepts]: Start accepts. Automaton has 6618 states and 11030 transitions. Word has length 712 [2023-12-25 22:39:21,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:21,948 INFO L495 AbstractCegarLoop]: Abstraction has 6618 states and 11030 transitions. [2023-12-25 22:39:21,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-12-25 22:39:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6618 states and 11030 transitions. [2023-12-25 22:39:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2023-12-25 22:39:21,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:21,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:21,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-25 22:39:21,953 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:21,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:21,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2121579476, now seen corresponding path program 1 times [2023-12-25 22:39:21,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:21,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696019920] [2023-12-25 22:39:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:21,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:22,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:22,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696019920] [2023-12-25 22:39:22,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696019920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:22,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:22,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:22,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254651904] [2023-12-25 22:39:22,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:22,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:22,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:22,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:22,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:22,702 INFO L87 Difference]: Start difference. First operand 6618 states and 11030 transitions. Second operand has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 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) [2023-12-25 22:39:22,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:22,894 INFO L93 Difference]: Finished difference Result 19363 states and 32274 transitions. [2023-12-25 22:39:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:22,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 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 713 [2023-12-25 22:39:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:22,911 INFO L225 Difference]: With dead ends: 19363 [2023-12-25 22:39:22,912 INFO L226 Difference]: Without dead ends: 12968 [2023-12-25 22:39:22,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:22,920 INFO L413 NwaCegarLoop]: 12287 mSDtfsCounter, 10581 mSDsluCounter, 33855 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10581 SdHoareTripleChecker+Valid, 46142 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:22,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10581 Valid, 46142 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12968 states. [2023-12-25 22:39:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12968 to 6620. [2023-12-25 22:39:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6620 states, 6619 states have (on average 1.6667170267411995) internal successors, (11032), 6619 states have internal predecessors, (11032), 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) [2023-12-25 22:39:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6620 states to 6620 states and 11032 transitions. [2023-12-25 22:39:23,022 INFO L78 Accepts]: Start accepts. Automaton has 6620 states and 11032 transitions. Word has length 713 [2023-12-25 22:39:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:23,023 INFO L495 AbstractCegarLoop]: Abstraction has 6620 states and 11032 transitions. [2023-12-25 22:39:23,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 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) [2023-12-25 22:39:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6620 states and 11032 transitions. [2023-12-25 22:39:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2023-12-25 22:39:23,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:23,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:23,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 22:39:23,028 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:23,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash 270310038, now seen corresponding path program 1 times [2023-12-25 22:39:23,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:23,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458716366] [2023-12-25 22:39:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:23,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:23,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:23,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458716366] [2023-12-25 22:39:23,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458716366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:23,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:23,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:23,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555703428] [2023-12-25 22:39:23,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:23,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:23,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:23,814 INFO L87 Difference]: Start difference. First operand 6620 states and 11032 transitions. Second operand has 5 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 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) [2023-12-25 22:39:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:24,003 INFO L93 Difference]: Finished difference Result 19366 states and 32275 transitions. [2023-12-25 22:39:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:24,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 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 714 [2023-12-25 22:39:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:24,017 INFO L225 Difference]: With dead ends: 19366 [2023-12-25 22:39:24,018 INFO L226 Difference]: Without dead ends: 12969 [2023-12-25 22:39:24,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:24,026 INFO L413 NwaCegarLoop]: 12282 mSDtfsCounter, 10578 mSDsluCounter, 33847 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10578 SdHoareTripleChecker+Valid, 46129 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:24,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10578 Valid, 46129 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12969 states. [2023-12-25 22:39:24,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12969 to 6622. [2023-12-25 22:39:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6622 states, 6621 states have (on average 1.6665156320797463) internal successors, (11034), 6621 states have internal predecessors, (11034), 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) [2023-12-25 22:39:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6622 states to 6622 states and 11034 transitions. [2023-12-25 22:39:24,119 INFO L78 Accepts]: Start accepts. Automaton has 6622 states and 11034 transitions. Word has length 714 [2023-12-25 22:39:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:24,120 INFO L495 AbstractCegarLoop]: Abstraction has 6622 states and 11034 transitions. [2023-12-25 22:39:24,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 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) [2023-12-25 22:39:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 6622 states and 11034 transitions. [2023-12-25 22:39:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2023-12-25 22:39:24,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:24,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:24,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 22:39:24,125 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:24,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:24,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1396623470, now seen corresponding path program 1 times [2023-12-25 22:39:24,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:24,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334142521] [2023-12-25 22:39:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:24,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:24,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:24,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334142521] [2023-12-25 22:39:24,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334142521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:24,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:24,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:24,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572115913] [2023-12-25 22:39:24,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:24,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:39:24,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:24,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:39:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:24,870 INFO L87 Difference]: Start difference. First operand 6622 states and 11034 transitions. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 5 states have internal predecessors, (715), 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) [2023-12-25 22:39:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:29,132 INFO L93 Difference]: Finished difference Result 30809 states and 51027 transitions. [2023-12-25 22:39:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:39:29,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 5 states have internal predecessors, (715), 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 715 [2023-12-25 22:39:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:29,147 INFO L225 Difference]: With dead ends: 30809 [2023-12-25 22:39:29,147 INFO L226 Difference]: Without dead ends: 13021 [2023-12-25 22:39:29,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:39:29,162 INFO L413 NwaCegarLoop]: 10804 mSDtfsCounter, 75255 mSDsluCounter, 29851 mSDsCounter, 0 mSdLazyCounter, 4048 mSolverCounterSat, 946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75255 SdHoareTripleChecker+Valid, 40655 SdHoareTripleChecker+Invalid, 4994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 946 IncrementalHoareTripleChecker+Valid, 4048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:29,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75255 Valid, 40655 Invalid, 4994 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [946 Valid, 4048 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 22:39:29,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13021 states. [2023-12-25 22:39:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13021 to 7074. [2023-12-25 22:39:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7074 states, 7073 states have (on average 1.6663367736462604) internal successors, (11786), 7073 states have internal predecessors, (11786), 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) [2023-12-25 22:39:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7074 states to 7074 states and 11786 transitions. [2023-12-25 22:39:29,271 INFO L78 Accepts]: Start accepts. Automaton has 7074 states and 11786 transitions. Word has length 715 [2023-12-25 22:39:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:29,272 INFO L495 AbstractCegarLoop]: Abstraction has 7074 states and 11786 transitions. [2023-12-25 22:39:29,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 5 states have internal predecessors, (715), 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) [2023-12-25 22:39:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 7074 states and 11786 transitions. [2023-12-25 22:39:29,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-12-25 22:39:29,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:29,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:29,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-25 22:39:29,277 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:29,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:29,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1203339174, now seen corresponding path program 1 times [2023-12-25 22:39:29,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:29,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394405153] [2023-12-25 22:39:29,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:29,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:30,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:30,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394405153] [2023-12-25 22:39:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394405153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:30,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:30,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:30,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820578966] [2023-12-25 22:39:30,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:30,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 22:39:30,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:30,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 22:39:30,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:30,225 INFO L87 Difference]: Start difference. First operand 7074 states and 11786 transitions. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 5 states have internal predecessors, (716), 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) [2023-12-25 22:39:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:33,667 INFO L93 Difference]: Finished difference Result 19689 states and 32762 transitions. [2023-12-25 22:39:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:39:33,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 5 states have internal predecessors, (716), 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 716 [2023-12-25 22:39:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:33,683 INFO L225 Difference]: With dead ends: 19689 [2023-12-25 22:39:33,683 INFO L226 Difference]: Without dead ends: 13290 [2023-12-25 22:39:33,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 22:39:33,691 INFO L413 NwaCegarLoop]: 9239 mSDtfsCounter, 42202 mSDsluCounter, 19946 mSDsCounter, 0 mSdLazyCounter, 4973 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42202 SdHoareTripleChecker+Valid, 29185 SdHoareTripleChecker+Invalid, 5106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 4973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:33,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42202 Valid, 29185 Invalid, 5106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [133 Valid, 4973 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-25 22:39:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13290 states. [2023-12-25 22:39:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13290 to 7086. [2023-12-25 22:39:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7086 states, 7085 states have (on average 1.666196189131969) internal successors, (11805), 7085 states have internal predecessors, (11805), 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) [2023-12-25 22:39:33,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7086 states to 7086 states and 11805 transitions. [2023-12-25 22:39:33,798 INFO L78 Accepts]: Start accepts. Automaton has 7086 states and 11805 transitions. Word has length 716 [2023-12-25 22:39:33,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:33,799 INFO L495 AbstractCegarLoop]: Abstraction has 7086 states and 11805 transitions. [2023-12-25 22:39:33,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 5 states have internal predecessors, (716), 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) [2023-12-25 22:39:33,799 INFO L276 IsEmpty]: Start isEmpty. Operand 7086 states and 11805 transitions. [2023-12-25 22:39:33,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2023-12-25 22:39:33,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:33,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:33,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-25 22:39:33,804 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:33,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:33,804 INFO L85 PathProgramCache]: Analyzing trace with hash -608132310, now seen corresponding path program 1 times [2023-12-25 22:39:33,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:33,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916934968] [2023-12-25 22:39:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:33,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:34,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:34,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916934968] [2023-12-25 22:39:34,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916934968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:34,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:34,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:34,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803174464] [2023-12-25 22:39:34,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:34,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:34,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:34,581 INFO L87 Difference]: Start difference. First operand 7086 states and 11805 transitions. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 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) [2023-12-25 22:39:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:34,781 INFO L93 Difference]: Finished difference Result 19833 states and 33047 transitions. [2023-12-25 22:39:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:34,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 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 717 [2023-12-25 22:39:34,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:34,796 INFO L225 Difference]: With dead ends: 19833 [2023-12-25 22:39:34,796 INFO L226 Difference]: Without dead ends: 13434 [2023-12-25 22:39:34,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:34,804 INFO L413 NwaCegarLoop]: 12275 mSDtfsCounter, 10575 mSDsluCounter, 35535 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10575 SdHoareTripleChecker+Valid, 47810 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:34,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10575 Valid, 47810 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13434 states. [2023-12-25 22:39:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13434 to 7088. [2023-12-25 22:39:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7088 states, 7087 states have (on average 1.6660081839988712) internal successors, (11807), 7087 states have internal predecessors, (11807), 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) [2023-12-25 22:39:34,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7088 states to 7088 states and 11807 transitions. [2023-12-25 22:39:34,907 INFO L78 Accepts]: Start accepts. Automaton has 7088 states and 11807 transitions. Word has length 717 [2023-12-25 22:39:34,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:34,907 INFO L495 AbstractCegarLoop]: Abstraction has 7088 states and 11807 transitions. [2023-12-25 22:39:34,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 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) [2023-12-25 22:39:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7088 states and 11807 transitions. [2023-12-25 22:39:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2023-12-25 22:39:34,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:34,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:34,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-25 22:39:34,912 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:34,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1061991398, now seen corresponding path program 1 times [2023-12-25 22:39:34,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:34,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370903789] [2023-12-25 22:39:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:34,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:35,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:35,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370903789] [2023-12-25 22:39:35,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370903789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:35,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:35,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:35,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340310007] [2023-12-25 22:39:35,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:35,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:35,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:35,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:35,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:35,606 INFO L87 Difference]: Start difference. First operand 7088 states and 11807 transitions. Second operand has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 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) [2023-12-25 22:39:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:35,763 INFO L93 Difference]: Finished difference Result 19836 states and 33048 transitions. [2023-12-25 22:39:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:35,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 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 718 [2023-12-25 22:39:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:35,782 INFO L225 Difference]: With dead ends: 19836 [2023-12-25 22:39:35,782 INFO L226 Difference]: Without dead ends: 13435 [2023-12-25 22:39:35,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:35,790 INFO L413 NwaCegarLoop]: 12270 mSDtfsCounter, 10572 mSDsluCounter, 23258 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10572 SdHoareTripleChecker+Valid, 35528 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:35,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10572 Valid, 35528 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13435 states. [2023-12-25 22:39:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13435 to 7090. [2023-12-25 22:39:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7090 states, 7089 states have (on average 1.6658202849485118) internal successors, (11809), 7089 states have internal predecessors, (11809), 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) [2023-12-25 22:39:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7090 states to 7090 states and 11809 transitions. [2023-12-25 22:39:35,882 INFO L78 Accepts]: Start accepts. Automaton has 7090 states and 11809 transitions. Word has length 718 [2023-12-25 22:39:35,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:35,882 INFO L495 AbstractCegarLoop]: Abstraction has 7090 states and 11809 transitions. [2023-12-25 22:39:35,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 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) [2023-12-25 22:39:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7090 states and 11809 transitions. [2023-12-25 22:39:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2023-12-25 22:39:35,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:35,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:35,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-25 22:39:35,887 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:35,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1553167086, now seen corresponding path program 1 times [2023-12-25 22:39:35,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:35,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73850016] [2023-12-25 22:39:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:35,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:36,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:36,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73850016] [2023-12-25 22:39:36,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73850016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:36,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:36,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:36,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068892394] [2023-12-25 22:39:36,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:36,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:36,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:36,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:36,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:36,528 INFO L87 Difference]: Start difference. First operand 7090 states and 11809 transitions. Second operand has 4 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 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) [2023-12-25 22:39:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:36,682 INFO L93 Difference]: Finished difference Result 19835 states and 33043 transitions. [2023-12-25 22:39:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:36,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 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 719 [2023-12-25 22:39:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:36,699 INFO L225 Difference]: With dead ends: 19835 [2023-12-25 22:39:36,699 INFO L226 Difference]: Without dead ends: 13432 [2023-12-25 22:39:36,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:36,708 INFO L413 NwaCegarLoop]: 12261 mSDtfsCounter, 10564 mSDsluCounter, 23247 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10564 SdHoareTripleChecker+Valid, 35508 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:36,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10564 Valid, 35508 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13432 states. [2023-12-25 22:39:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13432 to 7092. [2023-12-25 22:39:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7092 states, 7091 states have (on average 1.6656324918911296) internal successors, (11811), 7091 states have internal predecessors, (11811), 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) [2023-12-25 22:39:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 11811 transitions. [2023-12-25 22:39:36,812 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 11811 transitions. Word has length 719 [2023-12-25 22:39:36,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:36,812 INFO L495 AbstractCegarLoop]: Abstraction has 7092 states and 11811 transitions. [2023-12-25 22:39:36,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 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) [2023-12-25 22:39:36,813 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 11811 transitions. [2023-12-25 22:39:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-25 22:39:36,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:36,817 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:36,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-25 22:39:36,817 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:36,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:36,818 INFO L85 PathProgramCache]: Analyzing trace with hash -454963276, now seen corresponding path program 1 times [2023-12-25 22:39:36,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:36,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066370753] [2023-12-25 22:39:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:36,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:37,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:37,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066370753] [2023-12-25 22:39:37,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066370753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:37,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:37,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:37,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840309435] [2023-12-25 22:39:37,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:37,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:37,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:37,474 INFO L87 Difference]: Start difference. First operand 7092 states and 11811 transitions. Second operand has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-12-25 22:39:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:37,665 INFO L93 Difference]: Finished difference Result 19845 states and 33055 transitions. [2023-12-25 22:39:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:37,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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 720 [2023-12-25 22:39:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:37,678 INFO L225 Difference]: With dead ends: 19845 [2023-12-25 22:39:37,678 INFO L226 Difference]: Without dead ends: 13440 [2023-12-25 22:39:37,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:37,685 INFO L413 NwaCegarLoop]: 12260 mSDtfsCounter, 10566 mSDsluCounter, 23248 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10566 SdHoareTripleChecker+Valid, 35508 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:37,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10566 Valid, 35508 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:37,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13440 states. [2023-12-25 22:39:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13440 to 7095. [2023-12-25 22:39:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7094 states have (on average 1.6656329292359742) internal successors, (11816), 7094 states have internal predecessors, (11816), 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) [2023-12-25 22:39:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 11816 transitions. [2023-12-25 22:39:37,776 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 11816 transitions. Word has length 720 [2023-12-25 22:39:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:37,777 INFO L495 AbstractCegarLoop]: Abstraction has 7095 states and 11816 transitions. [2023-12-25 22:39:37,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-12-25 22:39:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 11816 transitions. [2023-12-25 22:39:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-12-25 22:39:37,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:37,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:37,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-25 22:39:37,781 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:37,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:37,782 INFO L85 PathProgramCache]: Analyzing trace with hash -854983048, now seen corresponding path program 1 times [2023-12-25 22:39:37,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:37,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716128314] [2023-12-25 22:39:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:37,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:38,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:38,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716128314] [2023-12-25 22:39:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716128314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:38,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:38,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:38,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166543050] [2023-12-25 22:39:38,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:38,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:38,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:38,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:38,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:38,397 INFO L87 Difference]: Start difference. First operand 7095 states and 11816 transitions. Second operand has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 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) [2023-12-25 22:39:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:38,549 INFO L93 Difference]: Finished difference Result 19844 states and 33054 transitions. [2023-12-25 22:39:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:38,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 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 721 [2023-12-25 22:39:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:38,565 INFO L225 Difference]: With dead ends: 19844 [2023-12-25 22:39:38,565 INFO L226 Difference]: Without dead ends: 13436 [2023-12-25 22:39:38,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:38,573 INFO L413 NwaCegarLoop]: 12251 mSDtfsCounter, 10561 mSDsluCounter, 23237 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10561 SdHoareTripleChecker+Valid, 35488 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:38,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10561 Valid, 35488 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13436 states. [2023-12-25 22:39:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13436 to 7097. [2023-12-25 22:39:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7097 states, 7096 states have (on average 1.6654453213077791) internal successors, (11818), 7096 states have internal predecessors, (11818), 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) [2023-12-25 22:39:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7097 states to 7097 states and 11818 transitions. [2023-12-25 22:39:38,659 INFO L78 Accepts]: Start accepts. Automaton has 7097 states and 11818 transitions. Word has length 721 [2023-12-25 22:39:38,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:38,660 INFO L495 AbstractCegarLoop]: Abstraction has 7097 states and 11818 transitions. [2023-12-25 22:39:38,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 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) [2023-12-25 22:39:38,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7097 states and 11818 transitions. [2023-12-25 22:39:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-12-25 22:39:38,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:38,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:38,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-25 22:39:38,664 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:38,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:38,664 INFO L85 PathProgramCache]: Analyzing trace with hash -745166640, now seen corresponding path program 1 times [2023-12-25 22:39:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888801058] [2023-12-25 22:39:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:39,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:39,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888801058] [2023-12-25 22:39:39,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888801058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:39,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:39,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:39,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898556204] [2023-12-25 22:39:39,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:39,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:39,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:39,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:39,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:39,342 INFO L87 Difference]: Start difference. First operand 7097 states and 11818 transitions. Second operand has 5 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 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) [2023-12-25 22:39:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:39,546 INFO L93 Difference]: Finished difference Result 19854 states and 33066 transitions. [2023-12-25 22:39:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:39:39,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 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 722 [2023-12-25 22:39:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:39,569 INFO L225 Difference]: With dead ends: 19854 [2023-12-25 22:39:39,569 INFO L226 Difference]: Without dead ends: 13444 [2023-12-25 22:39:39,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:39,577 INFO L413 NwaCegarLoop]: 12249 mSDtfsCounter, 10564 mSDsluCounter, 35479 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10564 SdHoareTripleChecker+Valid, 47728 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:39,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10564 Valid, 47728 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:39,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13444 states. [2023-12-25 22:39:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13444 to 7100. [2023-12-25 22:39:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7100 states, 7099 states have (on average 1.6654458374418932) internal successors, (11823), 7099 states have internal predecessors, (11823), 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) [2023-12-25 22:39:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7100 states to 7100 states and 11823 transitions. [2023-12-25 22:39:39,665 INFO L78 Accepts]: Start accepts. Automaton has 7100 states and 11823 transitions. Word has length 722 [2023-12-25 22:39:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:39,666 INFO L495 AbstractCegarLoop]: Abstraction has 7100 states and 11823 transitions. [2023-12-25 22:39:39,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 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) [2023-12-25 22:39:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 7100 states and 11823 transitions. [2023-12-25 22:39:39,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-12-25 22:39:39,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:39,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:39,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-25 22:39:39,671 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:39,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:39,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2084865696, now seen corresponding path program 1 times [2023-12-25 22:39:39,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:39,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908046364] [2023-12-25 22:39:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:39,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:40,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:40,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908046364] [2023-12-25 22:39:40,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908046364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:40,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:40,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412099421] [2023-12-25 22:39:40,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:40,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:40,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:40,314 INFO L87 Difference]: Start difference. First operand 7100 states and 11823 transitions. Second operand has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 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) [2023-12-25 22:39:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:40,470 INFO L93 Difference]: Finished difference Result 19857 states and 33071 transitions. [2023-12-25 22:39:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:40,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 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 723 [2023-12-25 22:39:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:40,485 INFO L225 Difference]: With dead ends: 19857 [2023-12-25 22:39:40,486 INFO L226 Difference]: Without dead ends: 13444 [2023-12-25 22:39:40,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:40,493 INFO L413 NwaCegarLoop]: 12240 mSDtfsCounter, 10561 mSDsluCounter, 23228 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10561 SdHoareTripleChecker+Valid, 35468 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:40,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10561 Valid, 35468 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13444 states. [2023-12-25 22:39:40,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13444 to 7105. [2023-12-25 22:39:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 7104 states have (on average 1.665259009009009) internal successors, (11830), 7104 states have internal predecessors, (11830), 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) [2023-12-25 22:39:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 11830 transitions. [2023-12-25 22:39:40,586 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 11830 transitions. Word has length 723 [2023-12-25 22:39:40,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:40,587 INFO L495 AbstractCegarLoop]: Abstraction has 7105 states and 11830 transitions. [2023-12-25 22:39:40,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 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) [2023-12-25 22:39:40,587 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 11830 transitions. [2023-12-25 22:39:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-12-25 22:39:40,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:40,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:40,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-25 22:39:40,592 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:40,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1136088964, now seen corresponding path program 1 times [2023-12-25 22:39:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:40,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040710756] [2023-12-25 22:39:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:40,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:41,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:41,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040710756] [2023-12-25 22:39:41,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040710756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:41,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:41,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:41,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496847473] [2023-12-25 22:39:41,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:41,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:41,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:41,269 INFO L87 Difference]: Start difference. First operand 7105 states and 11830 transitions. Second operand has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 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) [2023-12-25 22:39:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:41,423 INFO L93 Difference]: Finished difference Result 19866 states and 33082 transitions. [2023-12-25 22:39:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:41,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 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 724 [2023-12-25 22:39:41,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:41,440 INFO L225 Difference]: With dead ends: 19866 [2023-12-25 22:39:41,440 INFO L226 Difference]: Without dead ends: 13448 [2023-12-25 22:39:41,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:41,448 INFO L413 NwaCegarLoop]: 12230 mSDtfsCounter, 10558 mSDsluCounter, 23218 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10558 SdHoareTripleChecker+Valid, 35448 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:41,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10558 Valid, 35448 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13448 states. [2023-12-25 22:39:41,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13448 to 7110. [2023-12-25 22:39:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7110 states, 7109 states have (on average 1.6650724433816289) internal successors, (11837), 7109 states have internal predecessors, (11837), 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) [2023-12-25 22:39:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7110 states to 7110 states and 11837 transitions. [2023-12-25 22:39:41,542 INFO L78 Accepts]: Start accepts. Automaton has 7110 states and 11837 transitions. Word has length 724 [2023-12-25 22:39:41,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:41,542 INFO L495 AbstractCegarLoop]: Abstraction has 7110 states and 11837 transitions. [2023-12-25 22:39:41,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 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) [2023-12-25 22:39:41,543 INFO L276 IsEmpty]: Start isEmpty. Operand 7110 states and 11837 transitions. [2023-12-25 22:39:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2023-12-25 22:39:41,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:41,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:41,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-25 22:39:41,547 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:41,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2024181332, now seen corresponding path program 1 times [2023-12-25 22:39:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449247004] [2023-12-25 22:39:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:42,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:42,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449247004] [2023-12-25 22:39:42,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449247004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:42,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:42,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:42,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657343776] [2023-12-25 22:39:42,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:42,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:42,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:42,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:42,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:42,166 INFO L87 Difference]: Start difference. First operand 7110 states and 11837 transitions. Second operand has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 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) [2023-12-25 22:39:42,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:42,320 INFO L93 Difference]: Finished difference Result 19871 states and 33087 transitions. [2023-12-25 22:39:42,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:42,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 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 725 [2023-12-25 22:39:42,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:42,336 INFO L225 Difference]: With dead ends: 19871 [2023-12-25 22:39:42,336 INFO L226 Difference]: Without dead ends: 13448 [2023-12-25 22:39:42,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:42,344 INFO L413 NwaCegarLoop]: 12221 mSDtfsCounter, 10552 mSDsluCounter, 23207 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10552 SdHoareTripleChecker+Valid, 35428 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:42,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10552 Valid, 35428 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:42,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13448 states. [2023-12-25 22:39:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13448 to 7112. [2023-12-25 22:39:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7112 states, 7111 states have (on average 1.6648853888342006) internal successors, (11839), 7111 states have internal predecessors, (11839), 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) [2023-12-25 22:39:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7112 states to 7112 states and 11839 transitions. [2023-12-25 22:39:42,438 INFO L78 Accepts]: Start accepts. Automaton has 7112 states and 11839 transitions. Word has length 725 [2023-12-25 22:39:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:42,439 INFO L495 AbstractCegarLoop]: Abstraction has 7112 states and 11839 transitions. [2023-12-25 22:39:42,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 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) [2023-12-25 22:39:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7112 states and 11839 transitions. [2023-12-25 22:39:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-12-25 22:39:42,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:42,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:42,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-25 22:39:42,444 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:42,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:42,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1580478878, now seen corresponding path program 1 times [2023-12-25 22:39:42,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:42,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355088127] [2023-12-25 22:39:42,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:42,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:43,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:43,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355088127] [2023-12-25 22:39:43,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355088127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:43,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:43,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:43,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253782710] [2023-12-25 22:39:43,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:43,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:43,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:43,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:43,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:43,082 INFO L87 Difference]: Start difference. First operand 7112 states and 11839 transitions. Second operand has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 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) [2023-12-25 22:39:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:43,239 INFO L93 Difference]: Finished difference Result 19881 states and 33099 transitions. [2023-12-25 22:39:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:43,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 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 726 [2023-12-25 22:39:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:43,256 INFO L225 Difference]: With dead ends: 19881 [2023-12-25 22:39:43,256 INFO L226 Difference]: Without dead ends: 13456 [2023-12-25 22:39:43,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:43,263 INFO L413 NwaCegarLoop]: 12220 mSDtfsCounter, 10554 mSDsluCounter, 23208 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10554 SdHoareTripleChecker+Valid, 35428 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:43,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10554 Valid, 35428 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13456 states. [2023-12-25 22:39:43,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13456 to 7115. [2023-12-25 22:39:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7115 states, 7114 states have (on average 1.6648861400056227) internal successors, (11844), 7114 states have internal predecessors, (11844), 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) [2023-12-25 22:39:43,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7115 states to 7115 states and 11844 transitions. [2023-12-25 22:39:43,361 INFO L78 Accepts]: Start accepts. Automaton has 7115 states and 11844 transitions. Word has length 726 [2023-12-25 22:39:43,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:43,361 INFO L495 AbstractCegarLoop]: Abstraction has 7115 states and 11844 transitions. [2023-12-25 22:39:43,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 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) [2023-12-25 22:39:43,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7115 states and 11844 transitions. [2023-12-25 22:39:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2023-12-25 22:39:43,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:43,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:43,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-25 22:39:43,366 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:43,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:43,366 INFO L85 PathProgramCache]: Analyzing trace with hash 698322066, now seen corresponding path program 1 times [2023-12-25 22:39:43,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:43,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063525481] [2023-12-25 22:39:43,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:43,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:43,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:43,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063525481] [2023-12-25 22:39:43,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063525481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:43,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:43,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:43,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026460936] [2023-12-25 22:39:43,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:43,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:43,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:43,982 INFO L87 Difference]: Start difference. First operand 7115 states and 11844 transitions. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 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) [2023-12-25 22:39:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:44,133 INFO L93 Difference]: Finished difference Result 19880 states and 33098 transitions. [2023-12-25 22:39:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:44,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 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 727 [2023-12-25 22:39:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:44,147 INFO L225 Difference]: With dead ends: 19880 [2023-12-25 22:39:44,147 INFO L226 Difference]: Without dead ends: 13452 [2023-12-25 22:39:44,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:44,154 INFO L413 NwaCegarLoop]: 12211 mSDtfsCounter, 10549 mSDsluCounter, 23197 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10549 SdHoareTripleChecker+Valid, 35408 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:44,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10549 Valid, 35408 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13452 states. [2023-12-25 22:39:44,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13452 to 7117. [2023-12-25 22:39:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 7116 states have (on average 1.664699269252389) internal successors, (11846), 7116 states have internal predecessors, (11846), 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) [2023-12-25 22:39:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 11846 transitions. [2023-12-25 22:39:44,241 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 11846 transitions. Word has length 727 [2023-12-25 22:39:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:44,242 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 11846 transitions. [2023-12-25 22:39:44,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 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) [2023-12-25 22:39:44,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 11846 transitions. [2023-12-25 22:39:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-25 22:39:44,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:44,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:44,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-25 22:39:44,246 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:44,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:44,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1426518970, now seen corresponding path program 1 times [2023-12-25 22:39:44,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:44,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823516629] [2023-12-25 22:39:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:44,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:44,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:44,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823516629] [2023-12-25 22:39:44,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823516629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:44,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:44,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827247188] [2023-12-25 22:39:44,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:44,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:44,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:44,943 INFO L87 Difference]: Start difference. First operand 7117 states and 11846 transitions. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 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) [2023-12-25 22:39:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:45,140 INFO L93 Difference]: Finished difference Result 19890 states and 33110 transitions. [2023-12-25 22:39:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:39:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 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 728 [2023-12-25 22:39:45,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:45,153 INFO L225 Difference]: With dead ends: 19890 [2023-12-25 22:39:45,153 INFO L226 Difference]: Without dead ends: 13460 [2023-12-25 22:39:45,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:45,161 INFO L413 NwaCegarLoop]: 12209 mSDtfsCounter, 10552 mSDsluCounter, 35399 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10552 SdHoareTripleChecker+Valid, 47608 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:45,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10552 Valid, 47608 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13460 states. [2023-12-25 22:39:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13460 to 7120. [2023-12-25 22:39:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 1.6647000983284168) internal successors, (11851), 7119 states have internal predecessors, (11851), 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) [2023-12-25 22:39:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 11851 transitions. [2023-12-25 22:39:45,247 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 11851 transitions. Word has length 728 [2023-12-25 22:39:45,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:45,247 INFO L495 AbstractCegarLoop]: Abstraction has 7120 states and 11851 transitions. [2023-12-25 22:39:45,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 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) [2023-12-25 22:39:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 11851 transitions. [2023-12-25 22:39:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-25 22:39:45,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:45,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:45,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-25 22:39:45,252 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:45,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:45,252 INFO L85 PathProgramCache]: Analyzing trace with hash -18988166, now seen corresponding path program 1 times [2023-12-25 22:39:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098461018] [2023-12-25 22:39:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:45,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:45,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098461018] [2023-12-25 22:39:45,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098461018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:45,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:45,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:45,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620915881] [2023-12-25 22:39:45,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:45,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:45,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:45,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:45,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:45,857 INFO L87 Difference]: Start difference. First operand 7120 states and 11851 transitions. Second operand has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 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) [2023-12-25 22:39:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:46,007 INFO L93 Difference]: Finished difference Result 19889 states and 33109 transitions. [2023-12-25 22:39:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 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 729 [2023-12-25 22:39:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:46,019 INFO L225 Difference]: With dead ends: 19889 [2023-12-25 22:39:46,020 INFO L226 Difference]: Without dead ends: 13456 [2023-12-25 22:39:46,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:46,027 INFO L413 NwaCegarLoop]: 12201 mSDtfsCounter, 10546 mSDsluCounter, 23187 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10546 SdHoareTripleChecker+Valid, 35388 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:46,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10546 Valid, 35388 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13456 states. [2023-12-25 22:39:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13456 to 7122. [2023-12-25 22:39:46,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7122 states, 7121 states have (on average 1.6645134110377755) internal successors, (11853), 7121 states have internal predecessors, (11853), 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) [2023-12-25 22:39:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 11853 transitions. [2023-12-25 22:39:46,118 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 11853 transitions. Word has length 729 [2023-12-25 22:39:46,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:46,119 INFO L495 AbstractCegarLoop]: Abstraction has 7122 states and 11853 transitions. [2023-12-25 22:39:46,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 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) [2023-12-25 22:39:46,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 11853 transitions. [2023-12-25 22:39:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-12-25 22:39:46,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:46,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:46,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-25 22:39:46,123 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:46,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:46,124 INFO L85 PathProgramCache]: Analyzing trace with hash 616671700, now seen corresponding path program 1 times [2023-12-25 22:39:46,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:46,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133324482] [2023-12-25 22:39:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:46,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:46,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:46,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133324482] [2023-12-25 22:39:46,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133324482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:46,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:46,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:46,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736303148] [2023-12-25 22:39:46,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:46,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:46,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:46,765 INFO L87 Difference]: Start difference. First operand 7122 states and 11853 transitions. Second operand has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 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) [2023-12-25 22:39:46,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:46,921 INFO L93 Difference]: Finished difference Result 19899 states and 33121 transitions. [2023-12-25 22:39:46,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:46,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 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 730 [2023-12-25 22:39:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:46,935 INFO L225 Difference]: With dead ends: 19899 [2023-12-25 22:39:46,936 INFO L226 Difference]: Without dead ends: 13464 [2023-12-25 22:39:46,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:46,944 INFO L413 NwaCegarLoop]: 12200 mSDtfsCounter, 10548 mSDsluCounter, 23188 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10548 SdHoareTripleChecker+Valid, 35388 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:46,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10548 Valid, 35388 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13464 states. [2023-12-25 22:39:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13464 to 7125. [2023-12-25 22:39:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7125 states, 7124 states have (on average 1.6645143177989894) internal successors, (11858), 7124 states have internal predecessors, (11858), 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) [2023-12-25 22:39:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11858 transitions. [2023-12-25 22:39:47,037 INFO L78 Accepts]: Start accepts. Automaton has 7125 states and 11858 transitions. Word has length 730 [2023-12-25 22:39:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:47,038 INFO L495 AbstractCegarLoop]: Abstraction has 7125 states and 11858 transitions. [2023-12-25 22:39:47,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 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) [2023-12-25 22:39:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 7125 states and 11858 transitions. [2023-12-25 22:39:47,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-25 22:39:47,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:47,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:47,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-25 22:39:47,042 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:47,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1964678560, now seen corresponding path program 1 times [2023-12-25 22:39:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:47,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227582366] [2023-12-25 22:39:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:47,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227582366] [2023-12-25 22:39:47,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227582366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:47,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:47,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:47,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350305826] [2023-12-25 22:39:47,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:47,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:47,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:47,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:47,664 INFO L87 Difference]: Start difference. First operand 7125 states and 11858 transitions. Second operand has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 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) [2023-12-25 22:39:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:47,844 INFO L93 Difference]: Finished difference Result 19898 states and 33120 transitions. [2023-12-25 22:39:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:47,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 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 731 [2023-12-25 22:39:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:47,858 INFO L225 Difference]: With dead ends: 19898 [2023-12-25 22:39:47,859 INFO L226 Difference]: Without dead ends: 13460 [2023-12-25 22:39:47,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:47,866 INFO L413 NwaCegarLoop]: 12191 mSDtfsCounter, 10543 mSDsluCounter, 23177 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10543 SdHoareTripleChecker+Valid, 35368 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:47,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10543 Valid, 35368 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13460 states. [2023-12-25 22:39:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13460 to 7127. [2023-12-25 22:39:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7127 states, 7126 states have (on average 1.664327813640191) internal successors, (11860), 7126 states have internal predecessors, (11860), 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) [2023-12-25 22:39:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7127 states to 7127 states and 11860 transitions. [2023-12-25 22:39:47,964 INFO L78 Accepts]: Start accepts. Automaton has 7127 states and 11860 transitions. Word has length 731 [2023-12-25 22:39:47,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:47,964 INFO L495 AbstractCegarLoop]: Abstraction has 7127 states and 11860 transitions. [2023-12-25 22:39:47,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 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) [2023-12-25 22:39:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 7127 states and 11860 transitions. [2023-12-25 22:39:47,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-12-25 22:39:47,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:47,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:47,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-25 22:39:47,969 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:47,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:47,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1820617488, now seen corresponding path program 1 times [2023-12-25 22:39:47,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:47,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237342774] [2023-12-25 22:39:47,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:47,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:48,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:48,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237342774] [2023-12-25 22:39:48,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237342774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:48,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:48,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732181109] [2023-12-25 22:39:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:48,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:48,686 INFO L87 Difference]: Start difference. First operand 7127 states and 11860 transitions. Second operand has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 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) [2023-12-25 22:39:48,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:48,887 INFO L93 Difference]: Finished difference Result 19908 states and 33132 transitions. [2023-12-25 22:39:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:39:48,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 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 732 [2023-12-25 22:39:48,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:48,902 INFO L225 Difference]: With dead ends: 19908 [2023-12-25 22:39:48,902 INFO L226 Difference]: Without dead ends: 13468 [2023-12-25 22:39:48,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:48,909 INFO L413 NwaCegarLoop]: 12189 mSDtfsCounter, 10546 mSDsluCounter, 35359 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10546 SdHoareTripleChecker+Valid, 47548 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:48,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10546 Valid, 47548 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:48,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13468 states. [2023-12-25 22:39:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13468 to 7130. [2023-12-25 22:39:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 7129 states have (on average 1.6643287978678636) internal successors, (11865), 7129 states have internal predecessors, (11865), 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) [2023-12-25 22:39:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 11865 transitions. [2023-12-25 22:39:49,001 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 11865 transitions. Word has length 732 [2023-12-25 22:39:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:49,001 INFO L495 AbstractCegarLoop]: Abstraction has 7130 states and 11865 transitions. [2023-12-25 22:39:49,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 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) [2023-12-25 22:39:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 11865 transitions. [2023-12-25 22:39:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-25 22:39:49,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:49,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:49,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-25 22:39:49,006 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:49,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:49,006 INFO L85 PathProgramCache]: Analyzing trace with hash 864676424, now seen corresponding path program 1 times [2023-12-25 22:39:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:49,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014355418] [2023-12-25 22:39:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:49,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:49,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:49,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014355418] [2023-12-25 22:39:49,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014355418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:49,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:49,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:49,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350034557] [2023-12-25 22:39:49,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:49,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:49,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:49,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:49,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:49,664 INFO L87 Difference]: Start difference. First operand 7130 states and 11865 transitions. Second operand has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 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) [2023-12-25 22:39:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:49,816 INFO L93 Difference]: Finished difference Result 19911 states and 33137 transitions. [2023-12-25 22:39:49,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:49,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 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 733 [2023-12-25 22:39:49,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:49,830 INFO L225 Difference]: With dead ends: 19911 [2023-12-25 22:39:49,830 INFO L226 Difference]: Without dead ends: 13468 [2023-12-25 22:39:49,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:49,838 INFO L413 NwaCegarLoop]: 12180 mSDtfsCounter, 10543 mSDsluCounter, 23168 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10543 SdHoareTripleChecker+Valid, 35348 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:49,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10543 Valid, 35348 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:49,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13468 states. [2023-12-25 22:39:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13468 to 7135. [2023-12-25 22:39:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7134 states have (on average 1.664143537987104) internal successors, (11872), 7134 states have internal predecessors, (11872), 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) [2023-12-25 22:39:49,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 11872 transitions. [2023-12-25 22:39:49,932 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 11872 transitions. Word has length 733 [2023-12-25 22:39:49,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:49,932 INFO L495 AbstractCegarLoop]: Abstraction has 7135 states and 11872 transitions. [2023-12-25 22:39:49,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 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) [2023-12-25 22:39:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 11872 transitions. [2023-12-25 22:39:49,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-12-25 22:39:49,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:49,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:49,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-25 22:39:49,937 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:49,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash -869421148, now seen corresponding path program 1 times [2023-12-25 22:39:49,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:49,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7838983] [2023-12-25 22:39:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:49,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:50,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:50,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7838983] [2023-12-25 22:39:50,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7838983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:50,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:50,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:50,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351439172] [2023-12-25 22:39:50,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:50,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:50,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:50,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:50,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:50,562 INFO L87 Difference]: Start difference. First operand 7135 states and 11872 transitions. Second operand has 4 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 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) [2023-12-25 22:39:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:50,713 INFO L93 Difference]: Finished difference Result 19916 states and 33142 transitions. [2023-12-25 22:39:50,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:50,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 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 734 [2023-12-25 22:39:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:50,727 INFO L225 Difference]: With dead ends: 19916 [2023-12-25 22:39:50,727 INFO L226 Difference]: Without dead ends: 13468 [2023-12-25 22:39:50,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:50,735 INFO L413 NwaCegarLoop]: 12171 mSDtfsCounter, 10537 mSDsluCounter, 23157 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10537 SdHoareTripleChecker+Valid, 35328 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:50,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10537 Valid, 35328 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13468 states. [2023-12-25 22:39:50,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13468 to 7137. [2023-12-25 22:39:50,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7137 states, 7136 states have (on average 1.6639573991031391) internal successors, (11874), 7136 states have internal predecessors, (11874), 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) [2023-12-25 22:39:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7137 states to 7137 states and 11874 transitions. [2023-12-25 22:39:50,824 INFO L78 Accepts]: Start accepts. Automaton has 7137 states and 11874 transitions. Word has length 734 [2023-12-25 22:39:50,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:50,824 INFO L495 AbstractCegarLoop]: Abstraction has 7137 states and 11874 transitions. [2023-12-25 22:39:50,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 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) [2023-12-25 22:39:50,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7137 states and 11874 transitions. [2023-12-25 22:39:50,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2023-12-25 22:39:50,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:50,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:50,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-25 22:39:50,829 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:50,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:50,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1173283500, now seen corresponding path program 1 times [2023-12-25 22:39:50,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:50,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608763170] [2023-12-25 22:39:50,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:50,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:51,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:51,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608763170] [2023-12-25 22:39:51,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608763170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:51,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:51,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:51,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640727977] [2023-12-25 22:39:51,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:51,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:51,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:51,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:51,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:51,557 INFO L87 Difference]: Start difference. First operand 7137 states and 11874 transitions. Second operand has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 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) [2023-12-25 22:39:51,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:51,745 INFO L93 Difference]: Finished difference Result 19926 states and 33154 transitions. [2023-12-25 22:39:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:39:51,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 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 735 [2023-12-25 22:39:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:51,760 INFO L225 Difference]: With dead ends: 19926 [2023-12-25 22:39:51,760 INFO L226 Difference]: Without dead ends: 13476 [2023-12-25 22:39:51,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:51,768 INFO L413 NwaCegarLoop]: 12169 mSDtfsCounter, 10541 mSDsluCounter, 33693 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10541 SdHoareTripleChecker+Valid, 45862 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:51,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10541 Valid, 45862 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:51,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13476 states. [2023-12-25 22:39:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13476 to 7140. [2023-12-25 22:39:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7140 states, 7139 states have (on average 1.6639585376103097) internal successors, (11879), 7139 states have internal predecessors, (11879), 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) [2023-12-25 22:39:51,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7140 states to 7140 states and 11879 transitions. [2023-12-25 22:39:51,864 INFO L78 Accepts]: Start accepts. Automaton has 7140 states and 11879 transitions. Word has length 735 [2023-12-25 22:39:51,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:51,864 INFO L495 AbstractCegarLoop]: Abstraction has 7140 states and 11879 transitions. [2023-12-25 22:39:51,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 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) [2023-12-25 22:39:51,865 INFO L276 IsEmpty]: Start isEmpty. Operand 7140 states and 11879 transitions. [2023-12-25 22:39:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2023-12-25 22:39:51,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:51,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:51,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-25 22:39:51,869 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:51,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:51,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2012256700, now seen corresponding path program 1 times [2023-12-25 22:39:51,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:51,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688273788] [2023-12-25 22:39:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:51,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:52,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:52,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688273788] [2023-12-25 22:39:52,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688273788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:52,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:52,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:52,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982602624] [2023-12-25 22:39:52,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:52,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:52,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:52,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:52,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:52,500 INFO L87 Difference]: Start difference. First operand 7140 states and 11879 transitions. Second operand has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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) [2023-12-25 22:39:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:52,656 INFO L93 Difference]: Finished difference Result 19925 states and 33153 transitions. [2023-12-25 22:39:52,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:39:52,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 736 [2023-12-25 22:39:52,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:52,670 INFO L225 Difference]: With dead ends: 19925 [2023-12-25 22:39:52,670 INFO L226 Difference]: Without dead ends: 13472 [2023-12-25 22:39:52,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:52,677 INFO L413 NwaCegarLoop]: 12161 mSDtfsCounter, 10534 mSDsluCounter, 23147 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10534 SdHoareTripleChecker+Valid, 35308 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:52,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10534 Valid, 35308 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:52,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13472 states. [2023-12-25 22:39:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13472 to 7142. [2023-12-25 22:39:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7142 states, 7141 states have (on average 1.6637725808710264) internal successors, (11881), 7141 states have internal predecessors, (11881), 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) [2023-12-25 22:39:52,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 11881 transitions. [2023-12-25 22:39:52,755 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 11881 transitions. Word has length 736 [2023-12-25 22:39:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:52,756 INFO L495 AbstractCegarLoop]: Abstraction has 7142 states and 11881 transitions. [2023-12-25 22:39:52,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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) [2023-12-25 22:39:52,756 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 11881 transitions. [2023-12-25 22:39:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2023-12-25 22:39:52,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:52,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:52,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-25 22:39:52,760 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:52,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1200081234, now seen corresponding path program 1 times [2023-12-25 22:39:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:52,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278719258] [2023-12-25 22:39:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:52,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:53,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:53,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278719258] [2023-12-25 22:39:53,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278719258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:53,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:53,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 22:39:53,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550057387] [2023-12-25 22:39:53,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:53,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:53,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:53,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:53,451 INFO L87 Difference]: Start difference. First operand 7142 states and 11881 transitions. Second operand has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 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) [2023-12-25 22:39:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:53,637 INFO L93 Difference]: Finished difference Result 19935 states and 33165 transitions. [2023-12-25 22:39:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:39:53,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 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 737 [2023-12-25 22:39:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:53,650 INFO L225 Difference]: With dead ends: 19935 [2023-12-25 22:39:53,650 INFO L226 Difference]: Without dead ends: 13480 [2023-12-25 22:39:53,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 22:39:53,658 INFO L413 NwaCegarLoop]: 12159 mSDtfsCounter, 10538 mSDsluCounter, 33680 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10538 SdHoareTripleChecker+Valid, 45839 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:53,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10538 Valid, 45839 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13480 states. [2023-12-25 22:39:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13480 to 7145. [2023-12-25 22:39:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7144 states have (on average 1.6637737961926091) internal successors, (11886), 7144 states have internal predecessors, (11886), 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) [2023-12-25 22:39:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 11886 transitions. [2023-12-25 22:39:53,739 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 11886 transitions. Word has length 737 [2023-12-25 22:39:53,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:53,739 INFO L495 AbstractCegarLoop]: Abstraction has 7145 states and 11886 transitions. [2023-12-25 22:39:53,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 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) [2023-12-25 22:39:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 11886 transitions. [2023-12-25 22:39:53,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2023-12-25 22:39:53,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:53,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:53,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-25 22:39:53,744 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:53,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1739489770, now seen corresponding path program 1 times [2023-12-25 22:39:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:53,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758365082] [2023-12-25 22:39:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:53,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:54,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:54,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758365082] [2023-12-25 22:39:54,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758365082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:54,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:54,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:54,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281608627] [2023-12-25 22:39:54,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:54,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:54,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:54,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:54,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:54,406 INFO L87 Difference]: Start difference. First operand 7145 states and 11886 transitions. Second operand has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 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) [2023-12-25 22:39:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:54,580 INFO L93 Difference]: Finished difference Result 19938 states and 33170 transitions. [2023-12-25 22:39:54,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:54,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 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 738 [2023-12-25 22:39:54,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:54,593 INFO L225 Difference]: With dead ends: 19938 [2023-12-25 22:39:54,593 INFO L226 Difference]: Without dead ends: 13480 [2023-12-25 22:39:54,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:54,600 INFO L413 NwaCegarLoop]: 12150 mSDtfsCounter, 10534 mSDsluCounter, 23138 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10534 SdHoareTripleChecker+Valid, 35288 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:54,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10534 Valid, 35288 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13480 states. [2023-12-25 22:39:54,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13480 to 7150. [2023-12-25 22:39:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7150 states, 7149 states have (on average 1.663589313190656) internal successors, (11893), 7149 states have internal predecessors, (11893), 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) [2023-12-25 22:39:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7150 states to 7150 states and 11893 transitions. [2023-12-25 22:39:54,680 INFO L78 Accepts]: Start accepts. Automaton has 7150 states and 11893 transitions. Word has length 738 [2023-12-25 22:39:54,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:54,681 INFO L495 AbstractCegarLoop]: Abstraction has 7150 states and 11893 transitions. [2023-12-25 22:39:54,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 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) [2023-12-25 22:39:54,681 INFO L276 IsEmpty]: Start isEmpty. Operand 7150 states and 11893 transitions. [2023-12-25 22:39:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2023-12-25 22:39:54,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:54,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:54,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-25 22:39:54,685 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:54,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1817563294, now seen corresponding path program 1 times [2023-12-25 22:39:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:54,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647095743] [2023-12-25 22:39:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:54,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:55,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:55,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647095743] [2023-12-25 22:39:55,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647095743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:55,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:55,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:55,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724187538] [2023-12-25 22:39:55,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:55,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:39:55,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:39:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:39:55,348 INFO L87 Difference]: Start difference. First operand 7150 states and 11893 transitions. Second operand has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 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) [2023-12-25 22:39:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:55,503 INFO L93 Difference]: Finished difference Result 19947 states and 33181 transitions. [2023-12-25 22:39:55,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:39:55,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 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 739 [2023-12-25 22:39:55,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:55,517 INFO L225 Difference]: With dead ends: 19947 [2023-12-25 22:39:55,517 INFO L226 Difference]: Without dead ends: 13484 [2023-12-25 22:39:55,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:55,524 INFO L413 NwaCegarLoop]: 12140 mSDtfsCounter, 10531 mSDsluCounter, 23128 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10531 SdHoareTripleChecker+Valid, 35268 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:55,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10531 Valid, 35268 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13484 states. [2023-12-25 22:39:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13484 to 7155. [2023-12-25 22:39:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7155 states, 7154 states have (on average 1.6634050880626223) internal successors, (11900), 7154 states have internal predecessors, (11900), 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) [2023-12-25 22:39:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7155 states to 7155 states and 11900 transitions. [2023-12-25 22:39:55,615 INFO L78 Accepts]: Start accepts. Automaton has 7155 states and 11900 transitions. Word has length 739 [2023-12-25 22:39:55,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:55,616 INFO L495 AbstractCegarLoop]: Abstraction has 7155 states and 11900 transitions. [2023-12-25 22:39:55,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 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) [2023-12-25 22:39:55,616 INFO L276 IsEmpty]: Start isEmpty. Operand 7155 states and 11900 transitions. [2023-12-25 22:39:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2023-12-25 22:39:55,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:55,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:39:55,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-25 22:39:55,620 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:55,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:55,621 INFO L85 PathProgramCache]: Analyzing trace with hash -992624694, now seen corresponding path program 1 times [2023-12-25 22:39:55,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:55,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680030584] [2023-12-25 22:39:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:55,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:39:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:39:56,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:39:56,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680030584] [2023-12-25 22:39:56,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680030584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:39:56,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:39:56,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:39:56,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733529864] [2023-12-25 22:39:56,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:39:56,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:39:56,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:39:56,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:39:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 22:39:56,318 INFO L87 Difference]: Start difference. First operand 7155 states and 11900 transitions. Second operand has 5 states, 5 states have (on average 148.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2023-12-25 22:39:56,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:39:56,547 INFO L93 Difference]: Finished difference Result 20175 states and 33558 transitions. [2023-12-25 22:39:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 22:39:56,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 148.0) internal successors, (740), 4 states have internal predecessors, (740), 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 740 [2023-12-25 22:39:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:39:56,562 INFO L225 Difference]: With dead ends: 20175 [2023-12-25 22:39:56,562 INFO L226 Difference]: Without dead ends: 13707 [2023-12-25 22:39:56,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 22:39:56,570 INFO L413 NwaCegarLoop]: 12134 mSDtfsCounter, 43122 mSDsluCounter, 21987 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43122 SdHoareTripleChecker+Valid, 34121 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:39:56,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43122 Valid, 34121 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:39:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13707 states. [2023-12-25 22:39:56,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13707 to 7377. [2023-12-25 22:39:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7377 states, 7376 states have (on average 1.6633676789587852) internal successors, (12269), 7376 states have internal predecessors, (12269), 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) [2023-12-25 22:39:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 12269 transitions. [2023-12-25 22:39:56,666 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 12269 transitions. Word has length 740 [2023-12-25 22:39:56,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:39:56,666 INFO L495 AbstractCegarLoop]: Abstraction has 7377 states and 12269 transitions. [2023-12-25 22:39:56,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2023-12-25 22:39:56,667 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 12269 transitions. [2023-12-25 22:39:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:39:56,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:39:56,790 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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] [2023-12-25 22:39:56,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-25 22:39:56,790 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:39:56,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:39:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash -753873464, now seen corresponding path program 1 times [2023-12-25 22:39:56,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:39:56,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871746985] [2023-12-25 22:39:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:56,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:39:57,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:39:57,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867497964] [2023-12-25 22:39:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:39:57,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:39:57,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:39:57,098 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) [2023-12-25 22:39:57,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 22:40:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:01,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 21425 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:40:01,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:02,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:02,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:02,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871746985] [2023-12-25 22:40:02,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:02,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867497964] [2023-12-25 22:40:02,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867497964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:02,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:02,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:40:02,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046177300] [2023-12-25 22:40:02,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:02,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:02,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:02,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:02,067 INFO L87 Difference]: Start difference. First operand 7377 states and 12269 transitions. Second operand has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:02,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:02,194 INFO L93 Difference]: Finished difference Result 13855 states and 23043 transitions. [2023-12-25 22:40:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:02,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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 4863 [2023-12-25 22:40:02,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:02,203 INFO L225 Difference]: With dead ends: 13855 [2023-12-25 22:40:02,204 INFO L226 Difference]: Without dead ends: 7387 [2023-12-25 22:40:02,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4862 GetRequests, 4860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:02,210 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 12 mSDsluCounter, 21984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32981 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:02,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32981 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7387 states. [2023-12-25 22:40:02,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7387 to 7379. [2023-12-25 22:40:02,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7379 states, 7378 states have (on average 1.6631878557874762) internal successors, (12271), 7378 states have internal predecessors, (12271), 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) [2023-12-25 22:40:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7379 states to 7379 states and 12271 transitions. [2023-12-25 22:40:02,289 INFO L78 Accepts]: Start accepts. Automaton has 7379 states and 12271 transitions. Word has length 4863 [2023-12-25 22:40:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:02,291 INFO L495 AbstractCegarLoop]: Abstraction has 7379 states and 12271 transitions. [2023-12-25 22:40:02,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:02,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7379 states and 12271 transitions. [2023-12-25 22:40:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:40:02,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:02,419 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:02,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-25 22:40:02,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-25 22:40:02,633 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:02,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -433418346, now seen corresponding path program 1 times [2023-12-25 22:40:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473351406] [2023-12-25 22:40:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:02,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:02,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:02,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130776644] [2023-12-25 22:40:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:02,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:02,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:02,970 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) [2023-12-25 22:40:02,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 22:40:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:07,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 21426 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:40:07,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:07,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:07,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:07,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473351406] [2023-12-25 22:40:07,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:07,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130776644] [2023-12-25 22:40:07,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130776644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:07,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:07,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:40:07,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607130380] [2023-12-25 22:40:07,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:07,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:07,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:07,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:07,686 INFO L87 Difference]: Start difference. First operand 7379 states and 12271 transitions. Second operand has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:07,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:07,798 INFO L93 Difference]: Finished difference Result 13858 states and 23045 transitions. [2023-12-25 22:40:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:07,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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 4863 [2023-12-25 22:40:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:07,806 INFO L225 Difference]: With dead ends: 13858 [2023-12-25 22:40:07,806 INFO L226 Difference]: Without dead ends: 7388 [2023-12-25 22:40:07,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4862 GetRequests, 4860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:07,811 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 12 mSDsluCounter, 21984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32981 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:07,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32981 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7388 states. [2023-12-25 22:40:07,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7388 to 7380. [2023-12-25 22:40:07,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7380 states, 7379 states have (on average 1.6630979807562) internal successors, (12272), 7379 states have internal predecessors, (12272), 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) [2023-12-25 22:40:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7380 states to 7380 states and 12272 transitions. [2023-12-25 22:40:07,882 INFO L78 Accepts]: Start accepts. Automaton has 7380 states and 12272 transitions. Word has length 4863 [2023-12-25 22:40:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:07,883 INFO L495 AbstractCegarLoop]: Abstraction has 7380 states and 12272 transitions. [2023-12-25 22:40:07,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 7380 states and 12272 transitions. [2023-12-25 22:40:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:40:08,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:08,007 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:08,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:08,220 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,SelfDestructingSolverStorable44 [2023-12-25 22:40:08,221 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:08,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:08,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1302449052, now seen corresponding path program 1 times [2023-12-25 22:40:08,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:08,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857075560] [2023-12-25 22:40:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:08,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:08,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788246853] [2023-12-25 22:40:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:08,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:08,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:08,532 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) [2023-12-25 22:40:08,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 22:40:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:13,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 21427 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:40:13,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:13,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:13,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:13,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857075560] [2023-12-25 22:40:13,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:13,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788246853] [2023-12-25 22:40:13,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788246853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:13,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:13,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:40:13,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831408568] [2023-12-25 22:40:13,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:13,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:13,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:13,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:13,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:13,392 INFO L87 Difference]: Start difference. First operand 7380 states and 12272 transitions. Second operand has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:13,507 INFO L93 Difference]: Finished difference Result 13860 states and 23047 transitions. [2023-12-25 22:40:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:13,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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 4863 [2023-12-25 22:40:13,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:13,516 INFO L225 Difference]: With dead ends: 13860 [2023-12-25 22:40:13,516 INFO L226 Difference]: Without dead ends: 7389 [2023-12-25 22:40:13,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4862 GetRequests, 4860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:13,522 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 12 mSDsluCounter, 21984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32981 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:13,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32981 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:13,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7389 states. [2023-12-25 22:40:13,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7389 to 7381. [2023-12-25 22:40:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7381 states, 7380 states have (on average 1.6630081300813009) internal successors, (12273), 7380 states have internal predecessors, (12273), 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) [2023-12-25 22:40:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7381 states to 7381 states and 12273 transitions. [2023-12-25 22:40:13,588 INFO L78 Accepts]: Start accepts. Automaton has 7381 states and 12273 transitions. Word has length 4863 [2023-12-25 22:40:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:13,589 INFO L495 AbstractCegarLoop]: Abstraction has 7381 states and 12273 transitions. [2023-12-25 22:40:13,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:13,590 INFO L276 IsEmpty]: Start isEmpty. Operand 7381 states and 12273 transitions. [2023-12-25 22:40:13,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:40:13,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:13,712 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:40:13,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:13,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:13,929 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:13,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:13,930 INFO L85 PathProgramCache]: Analyzing trace with hash 194560818, now seen corresponding path program 1 times [2023-12-25 22:40:13,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:13,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165070008] [2023-12-25 22:40:13,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:13,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:14,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087473544] [2023-12-25 22:40:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:14,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:14,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:14,230 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) [2023-12-25 22:40:14,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 22:40:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:18,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 21428 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:40:18,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:18,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:18,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:18,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165070008] [2023-12-25 22:40:18,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:18,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087473544] [2023-12-25 22:40:18,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087473544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:18,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:18,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:40:18,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552494553] [2023-12-25 22:40:18,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:18,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:18,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:18,999 INFO L87 Difference]: Start difference. First operand 7381 states and 12273 transitions. Second operand has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:19,117 INFO L93 Difference]: Finished difference Result 13862 states and 23049 transitions. [2023-12-25 22:40:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:19,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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 4863 [2023-12-25 22:40:19,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:19,126 INFO L225 Difference]: With dead ends: 13862 [2023-12-25 22:40:19,126 INFO L226 Difference]: Without dead ends: 7390 [2023-12-25 22:40:19,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4862 GetRequests, 4860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:19,132 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 12 mSDsluCounter, 21984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32981 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:19,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32981 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:19,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2023-12-25 22:40:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 7382. [2023-12-25 22:40:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7382 states, 7381 states have (on average 1.662918303752879) internal successors, (12274), 7381 states have internal predecessors, (12274), 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) [2023-12-25 22:40:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 12274 transitions. [2023-12-25 22:40:19,197 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 12274 transitions. Word has length 4863 [2023-12-25 22:40:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:19,198 INFO L495 AbstractCegarLoop]: Abstraction has 7382 states and 12274 transitions. [2023-12-25 22:40:19,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 12274 transitions. [2023-12-25 22:40:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:40:19,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:19,321 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:19,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:19,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:19,522 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:19,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 141216768, now seen corresponding path program 1 times [2023-12-25 22:40:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:19,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027801373] [2023-12-25 22:40:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:19,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:19,813 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:19,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878684432] [2023-12-25 22:40:19,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:19,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:19,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:19,816 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) [2023-12-25 22:40:19,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 22:40:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:24,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 21429 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:40:24,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:24,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:24,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027801373] [2023-12-25 22:40:24,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878684432] [2023-12-25 22:40:24,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878684432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:24,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:24,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:40:24,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510633537] [2023-12-25 22:40:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:24,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:24,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:24,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:24,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:24,582 INFO L87 Difference]: Start difference. First operand 7382 states and 12274 transitions. Second operand has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:24,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:24,697 INFO L93 Difference]: Finished difference Result 13864 states and 23051 transitions. [2023-12-25 22:40:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:24,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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 4863 [2023-12-25 22:40:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:24,706 INFO L225 Difference]: With dead ends: 13864 [2023-12-25 22:40:24,706 INFO L226 Difference]: Without dead ends: 7391 [2023-12-25 22:40:24,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4862 GetRequests, 4860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:24,712 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 12 mSDsluCounter, 21984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32981 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:24,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32981 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:24,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2023-12-25 22:40:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 7383. [2023-12-25 22:40:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7382 states have (on average 1.6628285017610405) internal successors, (12275), 7382 states have internal predecessors, (12275), 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) [2023-12-25 22:40:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 12275 transitions. [2023-12-25 22:40:24,776 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 12275 transitions. Word has length 4863 [2023-12-25 22:40:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:24,777 INFO L495 AbstractCegarLoop]: Abstraction has 7383 states and 12275 transitions. [2023-12-25 22:40:24,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 12275 transitions. [2023-12-25 22:40:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:40:24,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:24,900 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:24,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:25,100 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,SelfDestructingSolverStorable47 [2023-12-25 22:40:25,101 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:25,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:25,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1102326990, now seen corresponding path program 1 times [2023-12-25 22:40:25,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:25,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564356444] [2023-12-25 22:40:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:25,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:25,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:25,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982971084] [2023-12-25 22:40:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:25,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:25,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:25,394 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) [2023-12-25 22:40:25,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 22:40:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:29,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 21430 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:40:30,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:30,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:30,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:30,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564356444] [2023-12-25 22:40:30,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:30,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982971084] [2023-12-25 22:40:30,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982971084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:30,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:30,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:40:30,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3793529] [2023-12-25 22:40:30,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:30,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:30,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:30,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:30,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:30,112 INFO L87 Difference]: Start difference. First operand 7383 states and 12275 transitions. Second operand has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:30,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:30,225 INFO L93 Difference]: Finished difference Result 13866 states and 23053 transitions. [2023-12-25 22:40:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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 4863 [2023-12-25 22:40:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:30,233 INFO L225 Difference]: With dead ends: 13866 [2023-12-25 22:40:30,233 INFO L226 Difference]: Without dead ends: 7392 [2023-12-25 22:40:30,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4862 GetRequests, 4860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:30,240 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 12 mSDsluCounter, 21984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32981 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:30,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32981 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7392 states. [2023-12-25 22:40:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7392 to 7384. [2023-12-25 22:40:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7384 states, 7383 states have (on average 1.662738724095896) internal successors, (12276), 7383 states have internal predecessors, (12276), 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) [2023-12-25 22:40:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7384 states to 7384 states and 12276 transitions. [2023-12-25 22:40:30,304 INFO L78 Accepts]: Start accepts. Automaton has 7384 states and 12276 transitions. Word has length 4863 [2023-12-25 22:40:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:30,305 INFO L495 AbstractCegarLoop]: Abstraction has 7384 states and 12276 transitions. [2023-12-25 22:40:30,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:30,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7384 states and 12276 transitions. [2023-12-25 22:40:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:40:30,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:30,427 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:30,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:30,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-25 22:40:30,631 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:30,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:30,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1404128356, now seen corresponding path program 1 times [2023-12-25 22:40:30,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:30,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758111067] [2023-12-25 22:40:30,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:30,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:30,973 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:30,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191622364] [2023-12-25 22:40:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:30,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:30,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:30,975 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) [2023-12-25 22:40:30,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 22:40:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:35,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 21431 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:40:35,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:35,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:35,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758111067] [2023-12-25 22:40:35,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191622364] [2023-12-25 22:40:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191622364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:35,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:35,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:40:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651127345] [2023-12-25 22:40:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:35,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:35,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:35,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:35,515 INFO L87 Difference]: Start difference. First operand 7384 states and 12276 transitions. Second operand has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:35,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:35,624 INFO L93 Difference]: Finished difference Result 13868 states and 23055 transitions. [2023-12-25 22:40:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:35,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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 4863 [2023-12-25 22:40:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:35,632 INFO L225 Difference]: With dead ends: 13868 [2023-12-25 22:40:35,632 INFO L226 Difference]: Without dead ends: 7393 [2023-12-25 22:40:35,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4862 GetRequests, 4860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:35,637 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 12 mSDsluCounter, 21984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32981 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:35,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32981 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2023-12-25 22:40:35,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 7385. [2023-12-25 22:40:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7385 states, 7384 states have (on average 1.6626489707475622) internal successors, (12277), 7384 states have internal predecessors, (12277), 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) [2023-12-25 22:40:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7385 states to 7385 states and 12277 transitions. [2023-12-25 22:40:35,697 INFO L78 Accepts]: Start accepts. Automaton has 7385 states and 12277 transitions. Word has length 4863 [2023-12-25 22:40:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:35,698 INFO L495 AbstractCegarLoop]: Abstraction has 7385 states and 12277 transitions. [2023-12-25 22:40:35,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7385 states and 12277 transitions. [2023-12-25 22:40:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:40:35,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:35,822 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:40:35,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:36,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:36,025 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:36,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:36,026 INFO L85 PathProgramCache]: Analyzing trace with hash 203078506, now seen corresponding path program 1 times [2023-12-25 22:40:36,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:36,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958198064] [2023-12-25 22:40:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:36,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:36,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220266413] [2023-12-25 22:40:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:36,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:36,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:36,323 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) [2023-12-25 22:40:36,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 22:40:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:40,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 21432 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:40:40,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:41,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:41,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:41,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958198064] [2023-12-25 22:40:41,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:41,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220266413] [2023-12-25 22:40:41,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220266413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:41,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:41,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:40:41,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86814613] [2023-12-25 22:40:41,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:41,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:41,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:41,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:41,067 INFO L87 Difference]: Start difference. First operand 7385 states and 12277 transitions. Second operand has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:41,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:41,180 INFO L93 Difference]: Finished difference Result 13870 states and 23057 transitions. [2023-12-25 22:40:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:41,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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 4863 [2023-12-25 22:40:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:41,188 INFO L225 Difference]: With dead ends: 13870 [2023-12-25 22:40:41,188 INFO L226 Difference]: Without dead ends: 7394 [2023-12-25 22:40:41,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4862 GetRequests, 4860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:41,192 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 12 mSDsluCounter, 21984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32981 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:41,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32981 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7394 states. [2023-12-25 22:40:41,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7394 to 7386. [2023-12-25 22:40:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7386 states, 7385 states have (on average 1.6625592417061612) internal successors, (12278), 7385 states have internal predecessors, (12278), 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) [2023-12-25 22:40:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7386 states to 7386 states and 12278 transitions. [2023-12-25 22:40:41,248 INFO L78 Accepts]: Start accepts. Automaton has 7386 states and 12278 transitions. Word has length 4863 [2023-12-25 22:40:41,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:41,249 INFO L495 AbstractCegarLoop]: Abstraction has 7386 states and 12278 transitions. [2023-12-25 22:40:41,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:41,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7386 states and 12278 transitions. [2023-12-25 22:40:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:40:41,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:41,371 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:41,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-25 22:40:41,584 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,SelfDestructingSolverStorable50 [2023-12-25 22:40:41,584 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:41,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:41,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1628279352, now seen corresponding path program 1 times [2023-12-25 22:40:41,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:41,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103933742] [2023-12-25 22:40:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:41,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:41,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:41,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088771196] [2023-12-25 22:40:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:41,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:41,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:41,861 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) [2023-12-25 22:40:41,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 22:40:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:46,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 21433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:40:46,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:46,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:46,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:46,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103933742] [2023-12-25 22:40:46,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:46,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088771196] [2023-12-25 22:40:46,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088771196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:46,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:46,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:40:46,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616059358] [2023-12-25 22:40:46,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:46,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:46,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:46,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:46,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:46,587 INFO L87 Difference]: Start difference. First operand 7386 states and 12278 transitions. Second operand has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:46,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:46,709 INFO L93 Difference]: Finished difference Result 13872 states and 23059 transitions. [2023-12-25 22:40:46,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:46,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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 4863 [2023-12-25 22:40:46,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:46,718 INFO L225 Difference]: With dead ends: 13872 [2023-12-25 22:40:46,718 INFO L226 Difference]: Without dead ends: 7395 [2023-12-25 22:40:46,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4862 GetRequests, 4860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:46,723 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 12 mSDsluCounter, 21984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32981 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:46,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32981 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7395 states. [2023-12-25 22:40:46,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7395 to 7387. [2023-12-25 22:40:46,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7387 states, 7386 states have (on average 1.6624695369618196) internal successors, (12279), 7386 states have internal predecessors, (12279), 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) [2023-12-25 22:40:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7387 states to 7387 states and 12279 transitions. [2023-12-25 22:40:46,790 INFO L78 Accepts]: Start accepts. Automaton has 7387 states and 12279 transitions. Word has length 4863 [2023-12-25 22:40:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:46,791 INFO L495 AbstractCegarLoop]: Abstraction has 7387 states and 12279 transitions. [2023-12-25 22:40:46,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7387 states and 12279 transitions. [2023-12-25 22:40:46,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:40:46,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:46,912 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:46,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:47,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:47,113 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:47,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:47,114 INFO L85 PathProgramCache]: Analyzing trace with hash -443270138, now seen corresponding path program 1 times [2023-12-25 22:40:47,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:47,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137738354] [2023-12-25 22:40:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:47,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:47,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:47,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800327804] [2023-12-25 22:40:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:47,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:47,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:47,417 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) [2023-12-25 22:40:47,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 22:40:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:52,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 21434 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 22:40:52,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:52,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 22:40:52,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:52,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137738354] [2023-12-25 22:40:52,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:52,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800327804] [2023-12-25 22:40:52,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800327804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 22:40:52,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 22:40:52,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 22:40:52,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075901810] [2023-12-25 22:40:52,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:52,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:52,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:52,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:52,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:52,127 INFO L87 Difference]: Start difference. First operand 7387 states and 12279 transitions. Second operand has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:52,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:52,240 INFO L93 Difference]: Finished difference Result 13874 states and 23061 transitions. [2023-12-25 22:40:52,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:40:52,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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 4863 [2023-12-25 22:40:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:52,249 INFO L225 Difference]: With dead ends: 13874 [2023-12-25 22:40:52,250 INFO L226 Difference]: Without dead ends: 7396 [2023-12-25 22:40:52,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4862 GetRequests, 4860 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 22:40:52,254 INFO L413 NwaCegarLoop]: 10997 mSDtfsCounter, 12 mSDsluCounter, 21984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32981 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:52,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32981 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2023-12-25 22:40:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 7388. [2023-12-25 22:40:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7388 states, 7387 states have (on average 1.6623798565046704) internal successors, (12280), 7387 states have internal predecessors, (12280), 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) [2023-12-25 22:40:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7388 states to 7388 states and 12280 transitions. [2023-12-25 22:40:52,315 INFO L78 Accepts]: Start accepts. Automaton has 7388 states and 12280 transitions. Word has length 4863 [2023-12-25 22:40:52,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:52,316 INFO L495 AbstractCegarLoop]: Abstraction has 7388 states and 12280 transitions. [2023-12-25 22:40:52,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1215.75) internal successors, (4863), 4 states have internal predecessors, (4863), 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) [2023-12-25 22:40:52,317 INFO L276 IsEmpty]: Start isEmpty. Operand 7388 states and 12280 transitions. [2023-12-25 22:40:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2023-12-25 22:40:52,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:52,438 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:40:52,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:52,639 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,SelfDestructingSolverStorable52 [2023-12-25 22:40:52,639 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:52,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1556959020, now seen corresponding path program 1 times [2023-12-25 22:40:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:52,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074338227] [2023-12-25 22:40:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:52,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:53,013 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:53,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731820967] [2023-12-25 22:40:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:53,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:53,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:53,016 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) [2023-12-25 22:40:53,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 22:40:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:40:57,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 21435 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:40:57,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:40:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 90 proven. 458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:40:58,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:40:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2023-12-25 22:40:58,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:40:58,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074338227] [2023-12-25 22:40:58,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:40:58,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731820967] [2023-12-25 22:40:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731820967] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:40:58,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:40:58,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:40:58,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518889935] [2023-12-25 22:40:58,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:40:58,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:40:58,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:40:58,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:40:58,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:40:58,672 INFO L87 Difference]: Start difference. First operand 7388 states and 12280 transitions. Second operand has 4 states, 4 states have (on average 1102.5) internal successors, (4410), 4 states have internal predecessors, (4410), 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) [2023-12-25 22:40:58,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:40:58,842 INFO L93 Difference]: Finished difference Result 20213 states and 33596 transitions. [2023-12-25 22:40:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:40:58,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1102.5) internal successors, (4410), 4 states have internal predecessors, (4410), 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 4863 [2023-12-25 22:40:58,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:40:58,859 INFO L225 Difference]: With dead ends: 20213 [2023-12-25 22:40:58,859 INFO L226 Difference]: Without dead ends: 13734 [2023-12-25 22:40:58,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9725 GetRequests, 9715 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:40:58,866 INFO L413 NwaCegarLoop]: 12135 mSDtfsCounter, 10530 mSDsluCounter, 23123 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10530 SdHoareTripleChecker+Valid, 35258 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:40:58,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10530 Valid, 35258 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:40:58,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13734 states. [2023-12-25 22:40:58,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13734 to 7388. [2023-12-25 22:40:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7388 states, 7387 states have (on average 1.6623798565046704) internal successors, (12280), 7387 states have internal predecessors, (12280), 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) [2023-12-25 22:40:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7388 states to 7388 states and 12280 transitions. [2023-12-25 22:40:58,962 INFO L78 Accepts]: Start accepts. Automaton has 7388 states and 12280 transitions. Word has length 4863 [2023-12-25 22:40:58,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:40:58,964 INFO L495 AbstractCegarLoop]: Abstraction has 7388 states and 12280 transitions. [2023-12-25 22:40:58,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1102.5) internal successors, (4410), 4 states have internal predecessors, (4410), 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) [2023-12-25 22:40:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 7388 states and 12280 transitions. [2023-12-25 22:40:59,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4865 [2023-12-25 22:40:59,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:40:59,087 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:40:59,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 22:40:59,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-12-25 22:40:59,304 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:40:59,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:40:59,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1137921992, now seen corresponding path program 1 times [2023-12-25 22:40:59,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:40:59,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794436766] [2023-12-25 22:40:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:59,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:40:59,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:40:59,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930502767] [2023-12-25 22:40:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:40:59,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:40:59,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:40:59,594 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) [2023-12-25 22:40:59,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 22:41:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:04,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 21439 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:41:04,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 92 proven. 456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:05,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:41:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-12-25 22:41:05,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:05,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794436766] [2023-12-25 22:41:05,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:05,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930502767] [2023-12-25 22:41:05,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930502767] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:41:05,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:41:05,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:41:05,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232093532] [2023-12-25 22:41:05,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:05,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:41:05,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:41:05,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:41:05,507 INFO L87 Difference]: Start difference. First operand 7388 states and 12280 transitions. Second operand has 4 states, 4 states have (on average 1103.75) internal successors, (4415), 4 states have internal predecessors, (4415), 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) [2023-12-25 22:41:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:05,669 INFO L93 Difference]: Finished difference Result 20218 states and 33603 transitions. [2023-12-25 22:41:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:41:05,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1103.75) internal successors, (4415), 4 states have internal predecessors, (4415), 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 4864 [2023-12-25 22:41:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:05,686 INFO L225 Difference]: With dead ends: 20218 [2023-12-25 22:41:05,686 INFO L226 Difference]: Without dead ends: 13736 [2023-12-25 22:41:05,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9727 GetRequests, 9717 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:41:05,693 INFO L413 NwaCegarLoop]: 12125 mSDtfsCounter, 10525 mSDsluCounter, 23113 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10525 SdHoareTripleChecker+Valid, 35238 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:05,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10525 Valid, 35238 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:41:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13736 states. [2023-12-25 22:41:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13736 to 7393. [2023-12-25 22:41:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7393 states, 7392 states have (on average 1.662202380952381) internal successors, (12287), 7392 states have internal predecessors, (12287), 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) [2023-12-25 22:41:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7393 states to 7393 states and 12287 transitions. [2023-12-25 22:41:05,777 INFO L78 Accepts]: Start accepts. Automaton has 7393 states and 12287 transitions. Word has length 4864 [2023-12-25 22:41:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:05,779 INFO L495 AbstractCegarLoop]: Abstraction has 7393 states and 12287 transitions. [2023-12-25 22:41:05,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1103.75) internal successors, (4415), 4 states have internal predecessors, (4415), 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) [2023-12-25 22:41:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 7393 states and 12287 transitions. [2023-12-25 22:41:05,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4866 [2023-12-25 22:41:05,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:05,900 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:05,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:06,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-12-25 22:41:06,116 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:06,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2050507654, now seen corresponding path program 1 times [2023-12-25 22:41:06,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:06,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511943460] [2023-12-25 22:41:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:06,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:06,472 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:06,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754589904] [2023-12-25 22:41:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:06,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:06,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:06,474 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) [2023-12-25 22:41:06,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 22:41:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:11,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 21442 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:41:11,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 96 proven. 452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:12,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:41:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2023-12-25 22:41:12,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:12,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511943460] [2023-12-25 22:41:12,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:12,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754589904] [2023-12-25 22:41:12,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754589904] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:41:12,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:41:12,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:41:12,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791489356] [2023-12-25 22:41:12,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:12,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:41:12,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:12,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:41:12,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:41:12,097 INFO L87 Difference]: Start difference. First operand 7393 states and 12287 transitions. Second operand has 4 states, 4 states have (on average 1105.0) internal successors, (4420), 4 states have internal predecessors, (4420), 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) [2023-12-25 22:41:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:12,268 INFO L93 Difference]: Finished difference Result 20233 states and 33624 transitions. [2023-12-25 22:41:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:41:12,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1105.0) internal successors, (4420), 4 states have internal predecessors, (4420), 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 4865 [2023-12-25 22:41:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:12,286 INFO L225 Difference]: With dead ends: 20233 [2023-12-25 22:41:12,286 INFO L226 Difference]: Without dead ends: 13740 [2023-12-25 22:41:12,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9729 GetRequests, 9719 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:41:12,294 INFO L413 NwaCegarLoop]: 12115 mSDtfsCounter, 10522 mSDsluCounter, 23103 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10522 SdHoareTripleChecker+Valid, 35218 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:12,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10522 Valid, 35218 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:41:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13740 states. [2023-12-25 22:41:12,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13740 to 7398. [2023-12-25 22:41:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7398 states, 7397 states have (on average 1.6620251453291874) internal successors, (12294), 7397 states have internal predecessors, (12294), 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) [2023-12-25 22:41:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7398 states to 7398 states and 12294 transitions. [2023-12-25 22:41:12,382 INFO L78 Accepts]: Start accepts. Automaton has 7398 states and 12294 transitions. Word has length 4865 [2023-12-25 22:41:12,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:12,384 INFO L495 AbstractCegarLoop]: Abstraction has 7398 states and 12294 transitions. [2023-12-25 22:41:12,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1105.0) internal successors, (4420), 4 states have internal predecessors, (4420), 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) [2023-12-25 22:41:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 7398 states and 12294 transitions. [2023-12-25 22:41:12,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4867 [2023-12-25 22:41:12,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:12,505 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:12,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:12,720 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,SelfDestructingSolverStorable55 [2023-12-25 22:41:12,720 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:12,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1620653694, now seen corresponding path program 1 times [2023-12-25 22:41:12,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:12,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278314835] [2023-12-25 22:41:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:12,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:13,002 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:13,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861508485] [2023-12-25 22:41:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:13,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:13,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:13,004 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) [2023-12-25 22:41:13,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 22:41:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:17,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 21446 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:41:17,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 100 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:18,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:41:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-25 22:41:18,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:18,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278314835] [2023-12-25 22:41:18,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:18,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861508485] [2023-12-25 22:41:18,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861508485] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:41:18,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:41:18,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:41:18,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159497850] [2023-12-25 22:41:18,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:18,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:41:18,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:18,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:41:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:41:18,788 INFO L87 Difference]: Start difference. First operand 7398 states and 12294 transitions. Second operand has 4 states, 4 states have (on average 1106.25) internal successors, (4425), 4 states have internal predecessors, (4425), 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) [2023-12-25 22:41:18,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:18,957 INFO L93 Difference]: Finished difference Result 20248 states and 33645 transitions. [2023-12-25 22:41:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:41:18,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1106.25) internal successors, (4425), 4 states have internal predecessors, (4425), 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 4866 [2023-12-25 22:41:18,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:18,974 INFO L225 Difference]: With dead ends: 20248 [2023-12-25 22:41:18,974 INFO L226 Difference]: Without dead ends: 13744 [2023-12-25 22:41:18,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9731 GetRequests, 9721 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:41:18,982 INFO L413 NwaCegarLoop]: 12105 mSDtfsCounter, 10519 mSDsluCounter, 23093 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10519 SdHoareTripleChecker+Valid, 35198 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:18,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10519 Valid, 35198 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:41:18,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13744 states. [2023-12-25 22:41:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13744 to 7403. [2023-12-25 22:41:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7403 states, 7402 states have (on average 1.6618481491488786) internal successors, (12301), 7402 states have internal predecessors, (12301), 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) [2023-12-25 22:41:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7403 states to 7403 states and 12301 transitions. [2023-12-25 22:41:19,070 INFO L78 Accepts]: Start accepts. Automaton has 7403 states and 12301 transitions. Word has length 4866 [2023-12-25 22:41:19,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:19,072 INFO L495 AbstractCegarLoop]: Abstraction has 7403 states and 12301 transitions. [2023-12-25 22:41:19,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1106.25) internal successors, (4425), 4 states have internal predecessors, (4425), 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) [2023-12-25 22:41:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 7403 states and 12301 transitions. [2023-12-25 22:41:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4868 [2023-12-25 22:41:19,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:19,194 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:19,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:19,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:19,420 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:19,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash 102896312, now seen corresponding path program 1 times [2023-12-25 22:41:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:19,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791080744] [2023-12-25 22:41:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:19,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:19,712 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:19,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136565156] [2023-12-25 22:41:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:19,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:19,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:19,715 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) [2023-12-25 22:41:19,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-25 22:41:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:24,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 21449 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:41:24,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 104 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:25,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:41:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2023-12-25 22:41:25,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:25,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791080744] [2023-12-25 22:41:25,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:25,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136565156] [2023-12-25 22:41:25,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136565156] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:41:25,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:41:25,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:41:25,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215806418] [2023-12-25 22:41:25,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:25,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:41:25,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:41:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:41:25,436 INFO L87 Difference]: Start difference. First operand 7403 states and 12301 transitions. Second operand has 4 states, 4 states have (on average 1107.5) internal successors, (4430), 4 states have internal predecessors, (4430), 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) [2023-12-25 22:41:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:25,599 INFO L93 Difference]: Finished difference Result 20263 states and 33666 transitions. [2023-12-25 22:41:25,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:41:25,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1107.5) internal successors, (4430), 4 states have internal predecessors, (4430), 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 4867 [2023-12-25 22:41:25,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:25,616 INFO L225 Difference]: With dead ends: 20263 [2023-12-25 22:41:25,616 INFO L226 Difference]: Without dead ends: 13748 [2023-12-25 22:41:25,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9733 GetRequests, 9723 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:41:25,626 INFO L413 NwaCegarLoop]: 12095 mSDtfsCounter, 10516 mSDsluCounter, 23083 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10516 SdHoareTripleChecker+Valid, 35178 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:25,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10516 Valid, 35178 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:41:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13748 states. [2023-12-25 22:41:25,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13748 to 7408. [2023-12-25 22:41:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7408 states, 7407 states have (on average 1.661671391926556) internal successors, (12308), 7407 states have internal predecessors, (12308), 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) [2023-12-25 22:41:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7408 states to 7408 states and 12308 transitions. [2023-12-25 22:41:25,715 INFO L78 Accepts]: Start accepts. Automaton has 7408 states and 12308 transitions. Word has length 4867 [2023-12-25 22:41:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:25,717 INFO L495 AbstractCegarLoop]: Abstraction has 7408 states and 12308 transitions. [2023-12-25 22:41:25,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1107.5) internal successors, (4430), 4 states have internal predecessors, (4430), 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) [2023-12-25 22:41:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 7408 states and 12308 transitions. [2023-12-25 22:41:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4869 [2023-12-25 22:41:25,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:25,839 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:41:25,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:26,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:26,040 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:26,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash -447661236, now seen corresponding path program 1 times [2023-12-25 22:41:26,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697544335] [2023-12-25 22:41:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:26,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:26,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:26,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711544309] [2023-12-25 22:41:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:26,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:26,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:26,375 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) [2023-12-25 22:41:26,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-25 22:41:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:30,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 21453 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:41:31,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 108 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:31,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:41:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-12-25 22:41:31,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:31,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697544335] [2023-12-25 22:41:31,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:31,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711544309] [2023-12-25 22:41:31,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711544309] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:41:31,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:41:31,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:41:31,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069632479] [2023-12-25 22:41:31,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:31,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:41:31,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:31,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:41:31,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:41:31,976 INFO L87 Difference]: Start difference. First operand 7408 states and 12308 transitions. Second operand has 4 states, 4 states have (on average 1108.75) internal successors, (4435), 4 states have internal predecessors, (4435), 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) [2023-12-25 22:41:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:32,137 INFO L93 Difference]: Finished difference Result 20278 states and 33687 transitions. [2023-12-25 22:41:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:41:32,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1108.75) internal successors, (4435), 4 states have internal predecessors, (4435), 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 4868 [2023-12-25 22:41:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:32,153 INFO L225 Difference]: With dead ends: 20278 [2023-12-25 22:41:32,153 INFO L226 Difference]: Without dead ends: 13752 [2023-12-25 22:41:32,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9735 GetRequests, 9725 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:41:32,160 INFO L413 NwaCegarLoop]: 12085 mSDtfsCounter, 10513 mSDsluCounter, 23073 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10513 SdHoareTripleChecker+Valid, 35158 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:32,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10513 Valid, 35158 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:41:32,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13752 states. [2023-12-25 22:41:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13752 to 7413. [2023-12-25 22:41:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7413 states, 7412 states have (on average 1.6614948731786292) internal successors, (12315), 7412 states have internal predecessors, (12315), 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) [2023-12-25 22:41:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 12315 transitions. [2023-12-25 22:41:32,242 INFO L78 Accepts]: Start accepts. Automaton has 7413 states and 12315 transitions. Word has length 4868 [2023-12-25 22:41:32,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:32,244 INFO L495 AbstractCegarLoop]: Abstraction has 7413 states and 12315 transitions. [2023-12-25 22:41:32,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1108.75) internal successors, (4435), 4 states have internal predecessors, (4435), 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) [2023-12-25 22:41:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 7413 states and 12315 transitions. [2023-12-25 22:41:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4870 [2023-12-25 22:41:32,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:32,365 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:32,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-25 22:41:32,592 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,SelfDestructingSolverStorable58 [2023-12-25 22:41:32,592 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:32,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:32,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1268924822, now seen corresponding path program 1 times [2023-12-25 22:41:32,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:32,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556867435] [2023-12-25 22:41:32,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:32,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:32,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:32,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126407928] [2023-12-25 22:41:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:32,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:32,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:32,892 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) [2023-12-25 22:41:32,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-25 22:41:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:37,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 21456 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:41:37,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 112 proven. 436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:38,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:41:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-25 22:41:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556867435] [2023-12-25 22:41:38,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126407928] [2023-12-25 22:41:38,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126407928] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:41:38,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:41:38,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:41:38,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374383111] [2023-12-25 22:41:38,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:38,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:41:38,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:38,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:41:38,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:41:38,556 INFO L87 Difference]: Start difference. First operand 7413 states and 12315 transitions. Second operand has 4 states, 4 states have (on average 1110.0) internal successors, (4440), 4 states have internal predecessors, (4440), 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) [2023-12-25 22:41:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:38,732 INFO L93 Difference]: Finished difference Result 20293 states and 33708 transitions. [2023-12-25 22:41:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:41:38,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1110.0) internal successors, (4440), 4 states have internal predecessors, (4440), 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 4869 [2023-12-25 22:41:38,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:38,749 INFO L225 Difference]: With dead ends: 20293 [2023-12-25 22:41:38,749 INFO L226 Difference]: Without dead ends: 13756 [2023-12-25 22:41:38,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9737 GetRequests, 9727 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:41:38,757 INFO L413 NwaCegarLoop]: 12075 mSDtfsCounter, 10510 mSDsluCounter, 23063 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10510 SdHoareTripleChecker+Valid, 35138 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:38,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10510 Valid, 35138 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:41:38,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13756 states. [2023-12-25 22:41:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13756 to 7418. [2023-12-25 22:41:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7418 states, 7417 states have (on average 1.6613185924228124) internal successors, (12322), 7417 states have internal predecessors, (12322), 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) [2023-12-25 22:41:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7418 states to 7418 states and 12322 transitions. [2023-12-25 22:41:38,846 INFO L78 Accepts]: Start accepts. Automaton has 7418 states and 12322 transitions. Word has length 4869 [2023-12-25 22:41:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:38,848 INFO L495 AbstractCegarLoop]: Abstraction has 7418 states and 12322 transitions. [2023-12-25 22:41:38,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1110.0) internal successors, (4440), 4 states have internal predecessors, (4440), 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) [2023-12-25 22:41:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 7418 states and 12322 transitions. [2023-12-25 22:41:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4871 [2023-12-25 22:41:38,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:38,969 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:39,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:39,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-25 22:41:39,170 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:39,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1720703594, now seen corresponding path program 1 times [2023-12-25 22:41:39,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:39,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302094204] [2023-12-25 22:41:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:39,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:39,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:39,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672716408] [2023-12-25 22:41:39,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:39,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:39,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:39,461 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) [2023-12-25 22:41:39,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-25 22:41:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:44,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 21460 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:41:44,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 116 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:45,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:41:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2023-12-25 22:41:45,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302094204] [2023-12-25 22:41:45,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:45,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672716408] [2023-12-25 22:41:45,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672716408] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:41:45,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:41:45,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:41:45,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917065085] [2023-12-25 22:41:45,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:45,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:41:45,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:45,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:41:45,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:41:45,169 INFO L87 Difference]: Start difference. First operand 7418 states and 12322 transitions. Second operand has 4 states, 4 states have (on average 1111.25) internal successors, (4445), 4 states have internal predecessors, (4445), 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) [2023-12-25 22:41:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:45,337 INFO L93 Difference]: Finished difference Result 20308 states and 33729 transitions. [2023-12-25 22:41:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:41:45,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1111.25) internal successors, (4445), 4 states have internal predecessors, (4445), 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 4870 [2023-12-25 22:41:45,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:45,352 INFO L225 Difference]: With dead ends: 20308 [2023-12-25 22:41:45,353 INFO L226 Difference]: Without dead ends: 13760 [2023-12-25 22:41:45,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9739 GetRequests, 9729 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:41:45,360 INFO L413 NwaCegarLoop]: 12065 mSDtfsCounter, 10507 mSDsluCounter, 23053 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10507 SdHoareTripleChecker+Valid, 35118 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:45,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10507 Valid, 35118 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:41:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13760 states. [2023-12-25 22:41:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13760 to 7423. [2023-12-25 22:41:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7423 states, 7422 states have (on average 1.661142549178119) internal successors, (12329), 7422 states have internal predecessors, (12329), 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) [2023-12-25 22:41:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7423 states to 7423 states and 12329 transitions. [2023-12-25 22:41:45,446 INFO L78 Accepts]: Start accepts. Automaton has 7423 states and 12329 transitions. Word has length 4870 [2023-12-25 22:41:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:45,448 INFO L495 AbstractCegarLoop]: Abstraction has 7423 states and 12329 transitions. [2023-12-25 22:41:45,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1111.25) internal successors, (4445), 4 states have internal predecessors, (4445), 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) [2023-12-25 22:41:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 7423 states and 12329 transitions. [2023-12-25 22:41:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4872 [2023-12-25 22:41:45,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:45,569 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:45,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:45,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:45,784 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:45,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -285153636, now seen corresponding path program 1 times [2023-12-25 22:41:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088161834] [2023-12-25 22:41:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:45,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:46,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:46,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722930399] [2023-12-25 22:41:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:46,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:46,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:46,073 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:41:46,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-25 22:41:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:50,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 21463 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:41:50,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 120 proven. 428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:51,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:41:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-25 22:41:51,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:51,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088161834] [2023-12-25 22:41:51,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:51,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722930399] [2023-12-25 22:41:51,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722930399] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:41:51,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:41:51,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:41:51,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362535286] [2023-12-25 22:41:51,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:51,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:41:51,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:51,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:41:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:41:51,686 INFO L87 Difference]: Start difference. First operand 7423 states and 12329 transitions. Second operand has 4 states, 4 states have (on average 1112.5) internal successors, (4450), 4 states have internal predecessors, (4450), 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) [2023-12-25 22:41:51,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:51,851 INFO L93 Difference]: Finished difference Result 20323 states and 33750 transitions. [2023-12-25 22:41:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:41:51,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1112.5) internal successors, (4450), 4 states have internal predecessors, (4450), 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 4871 [2023-12-25 22:41:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:51,867 INFO L225 Difference]: With dead ends: 20323 [2023-12-25 22:41:51,867 INFO L226 Difference]: Without dead ends: 13764 [2023-12-25 22:41:51,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9741 GetRequests, 9731 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:41:51,875 INFO L413 NwaCegarLoop]: 12055 mSDtfsCounter, 10504 mSDsluCounter, 23043 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10504 SdHoareTripleChecker+Valid, 35098 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:51,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10504 Valid, 35098 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:41:51,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13764 states. [2023-12-25 22:41:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13764 to 7428. [2023-12-25 22:41:51,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7428 states, 7427 states have (on average 1.660966742964858) internal successors, (12336), 7427 states have internal predecessors, (12336), 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) [2023-12-25 22:41:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 12336 transitions. [2023-12-25 22:41:51,965 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 12336 transitions. Word has length 4871 [2023-12-25 22:41:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:51,967 INFO L495 AbstractCegarLoop]: Abstraction has 7428 states and 12336 transitions. [2023-12-25 22:41:51,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1112.5) internal successors, (4450), 4 states have internal predecessors, (4450), 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) [2023-12-25 22:41:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 12336 transitions. [2023-12-25 22:41:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4873 [2023-12-25 22:41:52,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:52,088 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:41:52,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:52,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:52,304 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:52,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1116755872, now seen corresponding path program 1 times [2023-12-25 22:41:52,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:52,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371989505] [2023-12-25 22:41:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:52,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:52,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:52,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841809549] [2023-12-25 22:41:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:52,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:52,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:52,599 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:41:52,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-25 22:41:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:41:57,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 21467 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:41:57,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:41:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 124 proven. 424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:41:58,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:41:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-25 22:41:58,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:41:58,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371989505] [2023-12-25 22:41:58,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:41:58,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841809549] [2023-12-25 22:41:58,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841809549] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:41:58,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:41:58,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:41:58,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124135895] [2023-12-25 22:41:58,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:41:58,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:41:58,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:41:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:41:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:41:58,267 INFO L87 Difference]: Start difference. First operand 7428 states and 12336 transitions. Second operand has 4 states, 4 states have (on average 1113.75) internal successors, (4455), 4 states have internal predecessors, (4455), 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) [2023-12-25 22:41:58,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:41:58,427 INFO L93 Difference]: Finished difference Result 20338 states and 33771 transitions. [2023-12-25 22:41:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:41:58,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1113.75) internal successors, (4455), 4 states have internal predecessors, (4455), 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 4872 [2023-12-25 22:41:58,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:41:58,443 INFO L225 Difference]: With dead ends: 20338 [2023-12-25 22:41:58,443 INFO L226 Difference]: Without dead ends: 13768 [2023-12-25 22:41:58,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9743 GetRequests, 9733 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:41:58,450 INFO L413 NwaCegarLoop]: 12045 mSDtfsCounter, 10501 mSDsluCounter, 23033 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10501 SdHoareTripleChecker+Valid, 35078 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:41:58,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10501 Valid, 35078 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:41:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13768 states. [2023-12-25 22:41:58,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13768 to 7433. [2023-12-25 22:41:58,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7433 states, 7432 states have (on average 1.6607911733046286) internal successors, (12343), 7432 states have internal predecessors, (12343), 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) [2023-12-25 22:41:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7433 states to 7433 states and 12343 transitions. [2023-12-25 22:41:58,536 INFO L78 Accepts]: Start accepts. Automaton has 7433 states and 12343 transitions. Word has length 4872 [2023-12-25 22:41:58,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:41:58,538 INFO L495 AbstractCegarLoop]: Abstraction has 7433 states and 12343 transitions. [2023-12-25 22:41:58,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1113.75) internal successors, (4455), 4 states have internal predecessors, (4455), 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) [2023-12-25 22:41:58,539 INFO L276 IsEmpty]: Start isEmpty. Operand 7433 states and 12343 transitions. [2023-12-25 22:41:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4874 [2023-12-25 22:41:58,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:41:58,659 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:41:58,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-25 22:41:58,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2023-12-25 22:41:58,872 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:41:58,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:41:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash -557241522, now seen corresponding path program 1 times [2023-12-25 22:41:58,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:41:58,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993977095] [2023-12-25 22:41:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:58,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:41:59,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:41:59,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936266782] [2023-12-25 22:41:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:41:59,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:41:59,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:41:59,238 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:41:59,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-25 22:42:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:03,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 21470 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:42:03,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 128 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:04,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:42:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2023-12-25 22:42:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993977095] [2023-12-25 22:42:04,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936266782] [2023-12-25 22:42:04,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936266782] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:42:04,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:42:04,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:42:04,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866830607] [2023-12-25 22:42:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:04,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:42:04,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:04,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:42:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:42:04,751 INFO L87 Difference]: Start difference. First operand 7433 states and 12343 transitions. Second operand has 4 states, 4 states have (on average 1115.0) internal successors, (4460), 4 states have internal predecessors, (4460), 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) [2023-12-25 22:42:04,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:04,913 INFO L93 Difference]: Finished difference Result 20353 states and 33792 transitions. [2023-12-25 22:42:04,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:42:04,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1115.0) internal successors, (4460), 4 states have internal predecessors, (4460), 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 4873 [2023-12-25 22:42:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:04,928 INFO L225 Difference]: With dead ends: 20353 [2023-12-25 22:42:04,928 INFO L226 Difference]: Without dead ends: 13772 [2023-12-25 22:42:04,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9745 GetRequests, 9735 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:42:04,936 INFO L413 NwaCegarLoop]: 12035 mSDtfsCounter, 10498 mSDsluCounter, 23023 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10498 SdHoareTripleChecker+Valid, 35058 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:04,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10498 Valid, 35058 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:42:04,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13772 states. [2023-12-25 22:42:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13772 to 7438. [2023-12-25 22:42:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7438 states, 7437 states have (on average 1.6606158397203172) internal successors, (12350), 7437 states have internal predecessors, (12350), 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) [2023-12-25 22:42:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7438 states to 7438 states and 12350 transitions. [2023-12-25 22:42:05,023 INFO L78 Accepts]: Start accepts. Automaton has 7438 states and 12350 transitions. Word has length 4873 [2023-12-25 22:42:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:05,025 INFO L495 AbstractCegarLoop]: Abstraction has 7438 states and 12350 transitions. [2023-12-25 22:42:05,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1115.0) internal successors, (4460), 4 states have internal predecessors, (4460), 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) [2023-12-25 22:42:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 7438 states and 12350 transitions. [2023-12-25 22:42:05,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4875 [2023-12-25 22:42:05,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:05,146 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:05,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:05,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:05,347 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:05,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1021058134, now seen corresponding path program 1 times [2023-12-25 22:42:05,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:05,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571889320] [2023-12-25 22:42:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:05,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:05,624 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:05,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813254228] [2023-12-25 22:42:05,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:05,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:05,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:05,626 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:05,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 22:42:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:10,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 21474 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:42:10,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 132 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:11,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:42:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2023-12-25 22:42:11,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:11,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571889320] [2023-12-25 22:42:11,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:11,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813254228] [2023-12-25 22:42:11,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813254228] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:42:11,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:42:11,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:42:11,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013869112] [2023-12-25 22:42:11,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:11,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:42:11,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:42:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:42:11,373 INFO L87 Difference]: Start difference. First operand 7438 states and 12350 transitions. Second operand has 4 states, 4 states have (on average 1116.25) internal successors, (4465), 4 states have internal predecessors, (4465), 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) [2023-12-25 22:42:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:11,533 INFO L93 Difference]: Finished difference Result 20368 states and 33813 transitions. [2023-12-25 22:42:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:42:11,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1116.25) internal successors, (4465), 4 states have internal predecessors, (4465), 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 4874 [2023-12-25 22:42:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:11,549 INFO L225 Difference]: With dead ends: 20368 [2023-12-25 22:42:11,549 INFO L226 Difference]: Without dead ends: 13776 [2023-12-25 22:42:11,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9747 GetRequests, 9737 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:42:11,557 INFO L413 NwaCegarLoop]: 12025 mSDtfsCounter, 10495 mSDsluCounter, 23013 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10495 SdHoareTripleChecker+Valid, 35038 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:11,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10495 Valid, 35038 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:42:11,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13776 states. [2023-12-25 22:42:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13776 to 7443. [2023-12-25 22:42:11,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7443 states, 7442 states have (on average 1.6604407417360925) internal successors, (12357), 7442 states have internal predecessors, (12357), 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) [2023-12-25 22:42:11,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 12357 transitions. [2023-12-25 22:42:11,645 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 12357 transitions. Word has length 4874 [2023-12-25 22:42:11,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:11,648 INFO L495 AbstractCegarLoop]: Abstraction has 7443 states and 12357 transitions. [2023-12-25 22:42:11,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1116.25) internal successors, (4465), 4 states have internal predecessors, (4465), 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) [2023-12-25 22:42:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 12357 transitions. [2023-12-25 22:42:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4876 [2023-12-25 22:42:11,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:11,769 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:11,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:11,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:11,970 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:11,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:11,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1390662528, now seen corresponding path program 1 times [2023-12-25 22:42:11,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:11,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637730692] [2023-12-25 22:42:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:11,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:12,247 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819464837] [2023-12-25 22:42:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:12,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:12,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:12,249 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:12,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-25 22:42:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:16,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 21477 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:42:17,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 136 proven. 412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:17,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:42:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-12-25 22:42:17,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:17,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637730692] [2023-12-25 22:42:17,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:17,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819464837] [2023-12-25 22:42:17,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819464837] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:42:17,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:42:17,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:42:17,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679941822] [2023-12-25 22:42:17,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:17,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:42:17,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:42:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:42:17,924 INFO L87 Difference]: Start difference. First operand 7443 states and 12357 transitions. Second operand has 4 states, 4 states have (on average 1117.5) internal successors, (4470), 4 states have internal predecessors, (4470), 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) [2023-12-25 22:42:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:18,085 INFO L93 Difference]: Finished difference Result 20383 states and 33834 transitions. [2023-12-25 22:42:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:42:18,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1117.5) internal successors, (4470), 4 states have internal predecessors, (4470), 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 4875 [2023-12-25 22:42:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:18,102 INFO L225 Difference]: With dead ends: 20383 [2023-12-25 22:42:18,102 INFO L226 Difference]: Without dead ends: 13780 [2023-12-25 22:42:18,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9749 GetRequests, 9739 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:42:18,109 INFO L413 NwaCegarLoop]: 12015 mSDtfsCounter, 10492 mSDsluCounter, 23003 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10492 SdHoareTripleChecker+Valid, 35018 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:18,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10492 Valid, 35018 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:42:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13780 states. [2023-12-25 22:42:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13780 to 7448. [2023-12-25 22:42:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7448 states, 7447 states have (on average 1.6602658788774003) internal successors, (12364), 7447 states have internal predecessors, (12364), 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) [2023-12-25 22:42:18,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7448 states to 7448 states and 12364 transitions. [2023-12-25 22:42:18,200 INFO L78 Accepts]: Start accepts. Automaton has 7448 states and 12364 transitions. Word has length 4875 [2023-12-25 22:42:18,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:18,202 INFO L495 AbstractCegarLoop]: Abstraction has 7448 states and 12364 transitions. [2023-12-25 22:42:18,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1117.5) internal successors, (4470), 4 states have internal predecessors, (4470), 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) [2023-12-25 22:42:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 7448 states and 12364 transitions. [2023-12-25 22:42:18,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4877 [2023-12-25 22:42:18,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:18,391 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:42:18,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:18,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:18,592 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:18,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2037844108, now seen corresponding path program 1 times [2023-12-25 22:42:18,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:18,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407408765] [2023-12-25 22:42:18,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:18,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:18,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64966530] [2023-12-25 22:42:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:18,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:18,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:18,878 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:18,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-25 22:42:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:23,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 21481 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:42:23,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 140 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:24,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:42:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-12-25 22:42:24,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:24,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407408765] [2023-12-25 22:42:24,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:24,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64966530] [2023-12-25 22:42:24,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64966530] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:42:24,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:42:24,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:42:24,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744100068] [2023-12-25 22:42:24,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:24,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:42:24,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:42:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:42:24,324 INFO L87 Difference]: Start difference. First operand 7448 states and 12364 transitions. Second operand has 4 states, 4 states have (on average 1118.75) internal successors, (4475), 4 states have internal predecessors, (4475), 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) [2023-12-25 22:42:24,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:24,486 INFO L93 Difference]: Finished difference Result 20398 states and 33855 transitions. [2023-12-25 22:42:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:42:24,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1118.75) internal successors, (4475), 4 states have internal predecessors, (4475), 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 4876 [2023-12-25 22:42:24,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:24,502 INFO L225 Difference]: With dead ends: 20398 [2023-12-25 22:42:24,502 INFO L226 Difference]: Without dead ends: 13784 [2023-12-25 22:42:24,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9751 GetRequests, 9741 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:42:24,509 INFO L413 NwaCegarLoop]: 12005 mSDtfsCounter, 10489 mSDsluCounter, 22993 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10489 SdHoareTripleChecker+Valid, 34998 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:24,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10489 Valid, 34998 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:42:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13784 states. [2023-12-25 22:42:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13784 to 7453. [2023-12-25 22:42:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7453 states, 7452 states have (on average 1.6600912506709609) internal successors, (12371), 7452 states have internal predecessors, (12371), 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) [2023-12-25 22:42:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7453 states to 7453 states and 12371 transitions. [2023-12-25 22:42:24,594 INFO L78 Accepts]: Start accepts. Automaton has 7453 states and 12371 transitions. Word has length 4876 [2023-12-25 22:42:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:24,596 INFO L495 AbstractCegarLoop]: Abstraction has 7453 states and 12371 transitions. [2023-12-25 22:42:24,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1118.75) internal successors, (4475), 4 states have internal predecessors, (4475), 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) [2023-12-25 22:42:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7453 states and 12371 transitions. [2023-12-25 22:42:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4878 [2023-12-25 22:42:24,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:24,798 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:42:24,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:24,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:24,999 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:24,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:25,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1174899250, now seen corresponding path program 1 times [2023-12-25 22:42:25,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:25,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320487630] [2023-12-25 22:42:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:25,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:25,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:25,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071416493] [2023-12-25 22:42:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:25,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:25,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:25,291 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:25,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-25 22:42:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:29,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 21484 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:42:29,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 144 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:30,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:42:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-25 22:42:30,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:30,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320487630] [2023-12-25 22:42:30,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:30,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071416493] [2023-12-25 22:42:30,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071416493] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:42:30,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:42:30,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:42:30,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982824213] [2023-12-25 22:42:30,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:30,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:42:30,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:30,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:42:30,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:42:30,782 INFO L87 Difference]: Start difference. First operand 7453 states and 12371 transitions. Second operand has 4 states, 4 states have (on average 1119.5) internal successors, (4478), 4 states have internal predecessors, (4478), 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) [2023-12-25 22:42:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:31,055 INFO L93 Difference]: Finished difference Result 20410 states and 33871 transitions. [2023-12-25 22:42:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:42:31,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1119.5) internal successors, (4478), 4 states have internal predecessors, (4478), 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 4877 [2023-12-25 22:42:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:31,066 INFO L225 Difference]: With dead ends: 20410 [2023-12-25 22:42:31,066 INFO L226 Difference]: Without dead ends: 13785 [2023-12-25 22:42:31,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9753 GetRequests, 9743 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:42:31,069 INFO L413 NwaCegarLoop]: 12000 mSDtfsCounter, 10488 mSDsluCounter, 22988 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10488 SdHoareTripleChecker+Valid, 34988 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:31,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10488 Valid, 34988 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:42:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13785 states. [2023-12-25 22:42:31,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13785 to 7455. [2023-12-25 22:42:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 7454 states have (on average 1.6599141400590287) internal successors, (12373), 7454 states have internal predecessors, (12373), 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) [2023-12-25 22:42:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 12373 transitions. [2023-12-25 22:42:31,135 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 12373 transitions. Word has length 4877 [2023-12-25 22:42:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:31,137 INFO L495 AbstractCegarLoop]: Abstraction has 7455 states and 12373 transitions. [2023-12-25 22:42:31,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1119.5) internal successors, (4478), 4 states have internal predecessors, (4478), 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) [2023-12-25 22:42:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 12373 transitions. [2023-12-25 22:42:31,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4879 [2023-12-25 22:42:31,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:31,257 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:31,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:31,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-12-25 22:42:31,458 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:31,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1748871974, now seen corresponding path program 1 times [2023-12-25 22:42:31,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:31,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886268743] [2023-12-25 22:42:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:31,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:31,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:31,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955214387] [2023-12-25 22:42:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:31,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:31,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:31,733 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:31,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-25 22:42:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:36,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 21487 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:42:36,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 146 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:37,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:42:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2023-12-25 22:42:37,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:37,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886268743] [2023-12-25 22:42:37,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:37,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955214387] [2023-12-25 22:42:37,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955214387] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:42:37,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:42:37,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:42:37,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381173871] [2023-12-25 22:42:37,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:37,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:42:37,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:37,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:42:37,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:42:37,194 INFO L87 Difference]: Start difference. First operand 7455 states and 12373 transitions. Second operand has 4 states, 4 states have (on average 1120.75) internal successors, (4483), 4 states have internal predecessors, (4483), 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) [2023-12-25 22:42:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:37,468 INFO L93 Difference]: Finished difference Result 20419 states and 33882 transitions. [2023-12-25 22:42:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:42:37,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1120.75) internal successors, (4483), 4 states have internal predecessors, (4483), 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 4878 [2023-12-25 22:42:37,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:37,483 INFO L225 Difference]: With dead ends: 20419 [2023-12-25 22:42:37,483 INFO L226 Difference]: Without dead ends: 13789 [2023-12-25 22:42:37,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9755 GetRequests, 9745 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:42:37,490 INFO L413 NwaCegarLoop]: 11990 mSDtfsCounter, 10483 mSDsluCounter, 22978 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10483 SdHoareTripleChecker+Valid, 34968 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10483 Valid, 34968 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:42:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13789 states. [2023-12-25 22:42:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13789 to 7460. [2023-12-25 22:42:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 7459 states have (on average 1.659739911516289) internal successors, (12380), 7459 states have internal predecessors, (12380), 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) [2023-12-25 22:42:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 12380 transitions. [2023-12-25 22:42:37,575 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 12380 transitions. Word has length 4878 [2023-12-25 22:42:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:37,577 INFO L495 AbstractCegarLoop]: Abstraction has 7460 states and 12380 transitions. [2023-12-25 22:42:37,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1120.75) internal successors, (4483), 4 states have internal predecessors, (4483), 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) [2023-12-25 22:42:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 12380 transitions. [2023-12-25 22:42:37,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4880 [2023-12-25 22:42:37,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:37,697 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:37,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-25 22:42:37,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-12-25 22:42:37,898 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:37,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash -610024986, now seen corresponding path program 1 times [2023-12-25 22:42:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:37,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368667622] [2023-12-25 22:42:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:38,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:38,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283003219] [2023-12-25 22:42:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:38,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:38,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:38,185 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:38,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-25 22:42:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:42,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 21490 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:42:42,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 150 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:43,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:42:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2023-12-25 22:42:43,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:43,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368667622] [2023-12-25 22:42:43,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:43,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283003219] [2023-12-25 22:42:43,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283003219] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:42:43,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:42:43,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:42:43,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582002337] [2023-12-25 22:42:43,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:43,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:42:43,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:42:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:42:43,685 INFO L87 Difference]: Start difference. First operand 7460 states and 12380 transitions. Second operand has 4 states, 4 states have (on average 1122.0) internal successors, (4488), 4 states have internal predecessors, (4488), 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) [2023-12-25 22:42:43,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:43,958 INFO L93 Difference]: Finished difference Result 20434 states and 33903 transitions. [2023-12-25 22:42:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:42:43,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1122.0) internal successors, (4488), 4 states have internal predecessors, (4488), 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 4879 [2023-12-25 22:42:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:43,971 INFO L225 Difference]: With dead ends: 20434 [2023-12-25 22:42:43,972 INFO L226 Difference]: Without dead ends: 13793 [2023-12-25 22:42:43,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9757 GetRequests, 9747 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:42:43,977 INFO L413 NwaCegarLoop]: 11980 mSDtfsCounter, 10480 mSDsluCounter, 22968 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10480 SdHoareTripleChecker+Valid, 34948 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:43,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10480 Valid, 34948 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:42:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13793 states. [2023-12-25 22:42:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13793 to 7465. [2023-12-25 22:42:44,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7465 states, 7464 states have (on average 1.6595659163987138) internal successors, (12387), 7464 states have internal predecessors, (12387), 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) [2023-12-25 22:42:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7465 states to 7465 states and 12387 transitions. [2023-12-25 22:42:44,063 INFO L78 Accepts]: Start accepts. Automaton has 7465 states and 12387 transitions. Word has length 4879 [2023-12-25 22:42:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:44,065 INFO L495 AbstractCegarLoop]: Abstraction has 7465 states and 12387 transitions. [2023-12-25 22:42:44,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1122.0) internal successors, (4488), 4 states have internal predecessors, (4488), 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) [2023-12-25 22:42:44,066 INFO L276 IsEmpty]: Start isEmpty. Operand 7465 states and 12387 transitions. [2023-12-25 22:42:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4881 [2023-12-25 22:42:44,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:44,186 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:42:44,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:44,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-12-25 22:42:44,387 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:44,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:44,387 INFO L85 PathProgramCache]: Analyzing trace with hash 693281830, now seen corresponding path program 1 times [2023-12-25 22:42:44,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:44,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146542578] [2023-12-25 22:42:44,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:44,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:44,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:44,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654757483] [2023-12-25 22:42:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:44,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:44,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:44,676 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:44,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-25 22:42:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:49,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 21493 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:42:49,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 154 proven. 394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:50,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:42:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-25 22:42:50,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:50,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146542578] [2023-12-25 22:42:50,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:50,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654757483] [2023-12-25 22:42:50,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654757483] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:42:50,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:42:50,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:42:50,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375862855] [2023-12-25 22:42:50,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:50,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:42:50,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:50,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:42:50,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:42:50,183 INFO L87 Difference]: Start difference. First operand 7465 states and 12387 transitions. Second operand has 4 states, 4 states have (on average 1123.25) internal successors, (4493), 4 states have internal predecessors, (4493), 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) [2023-12-25 22:42:50,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:50,347 INFO L93 Difference]: Finished difference Result 20449 states and 33924 transitions. [2023-12-25 22:42:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:42:50,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1123.25) internal successors, (4493), 4 states have internal predecessors, (4493), 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 4880 [2023-12-25 22:42:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:50,363 INFO L225 Difference]: With dead ends: 20449 [2023-12-25 22:42:50,363 INFO L226 Difference]: Without dead ends: 13797 [2023-12-25 22:42:50,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9759 GetRequests, 9749 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:42:50,370 INFO L413 NwaCegarLoop]: 11970 mSDtfsCounter, 10477 mSDsluCounter, 22958 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10477 SdHoareTripleChecker+Valid, 34928 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:50,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10477 Valid, 34928 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:42:50,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13797 states. [2023-12-25 22:42:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13797 to 7470. [2023-12-25 22:42:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7470 states, 7469 states have (on average 1.659392154237515) internal successors, (12394), 7469 states have internal predecessors, (12394), 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) [2023-12-25 22:42:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7470 states to 7470 states and 12394 transitions. [2023-12-25 22:42:50,459 INFO L78 Accepts]: Start accepts. Automaton has 7470 states and 12394 transitions. Word has length 4880 [2023-12-25 22:42:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:50,461 INFO L495 AbstractCegarLoop]: Abstraction has 7470 states and 12394 transitions. [2023-12-25 22:42:50,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1123.25) internal successors, (4493), 4 states have internal predecessors, (4493), 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) [2023-12-25 22:42:50,462 INFO L276 IsEmpty]: Start isEmpty. Operand 7470 states and 12394 transitions. [2023-12-25 22:42:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4882 [2023-12-25 22:42:50,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:50,695 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:50,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:50,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:50,896 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:50,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:50,897 INFO L85 PathProgramCache]: Analyzing trace with hash 467540890, now seen corresponding path program 1 times [2023-12-25 22:42:50,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:50,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946851686] [2023-12-25 22:42:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:50,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:51,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:51,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205480194] [2023-12-25 22:42:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:51,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:51,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:51,186 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:51,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-25 22:42:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:42:55,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 21496 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:42:55,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:42:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 158 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:42:56,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:42:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-25 22:42:56,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:42:56,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946851686] [2023-12-25 22:42:56,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:42:56,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205480194] [2023-12-25 22:42:56,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205480194] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:42:56,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:42:56,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:42:56,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553125360] [2023-12-25 22:42:56,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:42:56,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:42:56,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:42:56,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:42:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:42:56,695 INFO L87 Difference]: Start difference. First operand 7470 states and 12394 transitions. Second operand has 4 states, 4 states have (on average 1124.5) internal successors, (4498), 4 states have internal predecessors, (4498), 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) [2023-12-25 22:42:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:42:56,856 INFO L93 Difference]: Finished difference Result 20464 states and 33945 transitions. [2023-12-25 22:42:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:42:56,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1124.5) internal successors, (4498), 4 states have internal predecessors, (4498), 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 4881 [2023-12-25 22:42:56,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:42:56,872 INFO L225 Difference]: With dead ends: 20464 [2023-12-25 22:42:56,872 INFO L226 Difference]: Without dead ends: 13801 [2023-12-25 22:42:56,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9761 GetRequests, 9751 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:42:56,879 INFO L413 NwaCegarLoop]: 11960 mSDtfsCounter, 10474 mSDsluCounter, 22948 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10474 SdHoareTripleChecker+Valid, 34908 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:42:56,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10474 Valid, 34908 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:42:56,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13801 states. [2023-12-25 22:42:56,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13801 to 7475. [2023-12-25 22:42:56,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7475 states, 7474 states have (on average 1.6592186245651592) internal successors, (12401), 7474 states have internal predecessors, (12401), 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) [2023-12-25 22:42:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7475 states to 7475 states and 12401 transitions. [2023-12-25 22:42:56,972 INFO L78 Accepts]: Start accepts. Automaton has 7475 states and 12401 transitions. Word has length 4881 [2023-12-25 22:42:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:42:56,974 INFO L495 AbstractCegarLoop]: Abstraction has 7475 states and 12401 transitions. [2023-12-25 22:42:56,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1124.5) internal successors, (4498), 4 states have internal predecessors, (4498), 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) [2023-12-25 22:42:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7475 states and 12401 transitions. [2023-12-25 22:42:57,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4883 [2023-12-25 22:42:57,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:42:57,094 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:42:57,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-25 22:42:57,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:57,295 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:42:57,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:42:57,296 INFO L85 PathProgramCache]: Analyzing trace with hash -257003150, now seen corresponding path program 1 times [2023-12-25 22:42:57,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:42:57,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115559319] [2023-12-25 22:42:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:57,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:42:57,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:42:57,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553923184] [2023-12-25 22:42:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:42:57,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:42:57,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:42:57,677 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:42:57,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-25 22:43:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:02,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 21499 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:43:02,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 162 proven. 386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:03,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:43:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-25 22:43:03,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:03,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115559319] [2023-12-25 22:43:03,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:03,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553923184] [2023-12-25 22:43:03,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553923184] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:43:03,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:43:03,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:43:03,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593024700] [2023-12-25 22:43:03,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:03,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:43:03,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:43:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:43:03,183 INFO L87 Difference]: Start difference. First operand 7475 states and 12401 transitions. Second operand has 4 states, 4 states have (on average 1125.75) internal successors, (4503), 4 states have internal predecessors, (4503), 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) [2023-12-25 22:43:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:03,346 INFO L93 Difference]: Finished difference Result 20479 states and 33966 transitions. [2023-12-25 22:43:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:43:03,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1125.75) internal successors, (4503), 4 states have internal predecessors, (4503), 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 4882 [2023-12-25 22:43:03,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:03,362 INFO L225 Difference]: With dead ends: 20479 [2023-12-25 22:43:03,362 INFO L226 Difference]: Without dead ends: 13805 [2023-12-25 22:43:03,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9763 GetRequests, 9753 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:43:03,370 INFO L413 NwaCegarLoop]: 11950 mSDtfsCounter, 10471 mSDsluCounter, 22938 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10471 SdHoareTripleChecker+Valid, 34888 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:03,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10471 Valid, 34888 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:43:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13805 states. [2023-12-25 22:43:03,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13805 to 7480. [2023-12-25 22:43:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7480 states, 7479 states have (on average 1.659045326915363) internal successors, (12408), 7479 states have internal predecessors, (12408), 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) [2023-12-25 22:43:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7480 states to 7480 states and 12408 transitions. [2023-12-25 22:43:03,458 INFO L78 Accepts]: Start accepts. Automaton has 7480 states and 12408 transitions. Word has length 4882 [2023-12-25 22:43:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:03,460 INFO L495 AbstractCegarLoop]: Abstraction has 7480 states and 12408 transitions. [2023-12-25 22:43:03,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1125.75) internal successors, (4503), 4 states have internal predecessors, (4503), 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) [2023-12-25 22:43:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 7480 states and 12408 transitions. [2023-12-25 22:43:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4884 [2023-12-25 22:43:03,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:03,581 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:03,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-25 22:43:03,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2023-12-25 22:43:03,782 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:03,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1131632462, now seen corresponding path program 1 times [2023-12-25 22:43:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290656421] [2023-12-25 22:43:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:03,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:04,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90298399] [2023-12-25 22:43:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:04,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:04,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:04,059 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:04,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-25 22:43:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:08,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 21502 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:43:08,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 166 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:09,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:43:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-25 22:43:09,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290656421] [2023-12-25 22:43:09,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90298399] [2023-12-25 22:43:09,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90298399] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:43:09,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:43:09,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:43:09,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325706257] [2023-12-25 22:43:09,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:09,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:43:09,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:09,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:43:09,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:43:09,778 INFO L87 Difference]: Start difference. First operand 7480 states and 12408 transitions. Second operand has 4 states, 4 states have (on average 1127.0) internal successors, (4508), 4 states have internal predecessors, (4508), 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) [2023-12-25 22:43:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:09,939 INFO L93 Difference]: Finished difference Result 20494 states and 33987 transitions. [2023-12-25 22:43:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:43:09,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1127.0) internal successors, (4508), 4 states have internal predecessors, (4508), 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 4883 [2023-12-25 22:43:09,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:09,955 INFO L225 Difference]: With dead ends: 20494 [2023-12-25 22:43:09,955 INFO L226 Difference]: Without dead ends: 13809 [2023-12-25 22:43:09,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9765 GetRequests, 9755 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:43:09,962 INFO L413 NwaCegarLoop]: 11940 mSDtfsCounter, 10468 mSDsluCounter, 22928 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10468 SdHoareTripleChecker+Valid, 34868 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:09,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10468 Valid, 34868 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:43:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13809 states. [2023-12-25 22:43:10,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13809 to 7485. [2023-12-25 22:43:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7485 states, 7484 states have (on average 1.6588722608230893) internal successors, (12415), 7484 states have internal predecessors, (12415), 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) [2023-12-25 22:43:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7485 states to 7485 states and 12415 transitions. [2023-12-25 22:43:10,049 INFO L78 Accepts]: Start accepts. Automaton has 7485 states and 12415 transitions. Word has length 4883 [2023-12-25 22:43:10,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:10,051 INFO L495 AbstractCegarLoop]: Abstraction has 7485 states and 12415 transitions. [2023-12-25 22:43:10,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1127.0) internal successors, (4508), 4 states have internal predecessors, (4508), 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) [2023-12-25 22:43:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7485 states and 12415 transitions. [2023-12-25 22:43:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4885 [2023-12-25 22:43:10,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:10,171 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:43:10,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-25 22:43:10,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:10,372 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:10,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:10,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1098448062, now seen corresponding path program 1 times [2023-12-25 22:43:10,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:10,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951399248] [2023-12-25 22:43:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:10,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:10,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:10,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242281867] [2023-12-25 22:43:10,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:10,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:10,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:10,656 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:10,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-25 22:43:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:15,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 21505 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:43:15,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 170 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:16,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:43:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-25 22:43:16,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:16,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951399248] [2023-12-25 22:43:16,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:16,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242281867] [2023-12-25 22:43:16,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242281867] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:43:16,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:43:16,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:43:16,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566551322] [2023-12-25 22:43:16,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:16,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:43:16,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:16,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:43:16,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:43:16,332 INFO L87 Difference]: Start difference. First operand 7485 states and 12415 transitions. Second operand has 5 states, 5 states have (on average 902.6) internal successors, (4513), 5 states have internal predecessors, (4513), 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) [2023-12-25 22:43:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:16,652 INFO L93 Difference]: Finished difference Result 27197 states and 45096 transitions. [2023-12-25 22:43:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 22:43:16,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 902.6) internal successors, (4513), 5 states have internal predecessors, (4513), 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 4884 [2023-12-25 22:43:16,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:16,675 INFO L225 Difference]: With dead ends: 27197 [2023-12-25 22:43:16,676 INFO L226 Difference]: Without dead ends: 20501 [2023-12-25 22:43:16,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9769 GetRequests, 9755 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-25 22:43:16,685 INFO L413 NwaCegarLoop]: 22548 mSDtfsCounter, 21086 mSDsluCounter, 56074 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21086 SdHoareTripleChecker+Valid, 78622 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:16,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21086 Valid, 78622 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 22:43:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20501 states. [2023-12-25 22:43:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20501 to 7490. [2023-12-25 22:43:16,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7490 states, 7489 states have (on average 1.6586994258245427) internal successors, (12422), 7489 states have internal predecessors, (12422), 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) [2023-12-25 22:43:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7490 states to 7490 states and 12422 transitions. [2023-12-25 22:43:16,796 INFO L78 Accepts]: Start accepts. Automaton has 7490 states and 12422 transitions. Word has length 4884 [2023-12-25 22:43:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:16,798 INFO L495 AbstractCegarLoop]: Abstraction has 7490 states and 12422 transitions. [2023-12-25 22:43:16,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 902.6) internal successors, (4513), 5 states have internal predecessors, (4513), 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) [2023-12-25 22:43:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 7490 states and 12422 transitions. [2023-12-25 22:43:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4886 [2023-12-25 22:43:16,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:16,918 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:16,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-25 22:43:17,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:17,119 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:17,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:17,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1218431742, now seen corresponding path program 1 times [2023-12-25 22:43:17,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:17,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859008785] [2023-12-25 22:43:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:17,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:17,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:17,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841130660] [2023-12-25 22:43:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:17,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:17,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:17,410 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:17,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-25 22:43:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:21,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 21508 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:43:22,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 174 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:23,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:43:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-12-25 22:43:23,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:23,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859008785] [2023-12-25 22:43:23,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:23,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841130660] [2023-12-25 22:43:23,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841130660] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:43:23,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:43:23,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:43:23,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453526706] [2023-12-25 22:43:23,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:43:23,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:23,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:43:23,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:43:23,097 INFO L87 Difference]: Start difference. First operand 7490 states and 12422 transitions. Second operand has 4 states, 4 states have (on average 1129.5) internal successors, (4518), 4 states have internal predecessors, (4518), 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) [2023-12-25 22:43:23,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:23,265 INFO L93 Difference]: Finished difference Result 20524 states and 34029 transitions. [2023-12-25 22:43:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:43:23,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1129.5) internal successors, (4518), 4 states have internal predecessors, (4518), 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 4885 [2023-12-25 22:43:23,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:23,280 INFO L225 Difference]: With dead ends: 20524 [2023-12-25 22:43:23,280 INFO L226 Difference]: Without dead ends: 13817 [2023-12-25 22:43:23,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9769 GetRequests, 9759 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:43:23,287 INFO L413 NwaCegarLoop]: 11920 mSDtfsCounter, 10462 mSDsluCounter, 22908 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10462 SdHoareTripleChecker+Valid, 34828 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:23,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10462 Valid, 34828 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:43:23,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13817 states. [2023-12-25 22:43:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13817 to 7495. [2023-12-25 22:43:23,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 7494 states have (on average 1.6585268214571658) internal successors, (12429), 7494 states have internal predecessors, (12429), 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) [2023-12-25 22:43:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 12429 transitions. [2023-12-25 22:43:23,371 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 12429 transitions. Word has length 4885 [2023-12-25 22:43:23,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:23,373 INFO L495 AbstractCegarLoop]: Abstraction has 7495 states and 12429 transitions. [2023-12-25 22:43:23,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1129.5) internal successors, (4518), 4 states have internal predecessors, (4518), 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) [2023-12-25 22:43:23,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 12429 transitions. [2023-12-25 22:43:23,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4887 [2023-12-25 22:43:23,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:23,495 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:23,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-25 22:43:23,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-12-25 22:43:23,696 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:23,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:23,697 INFO L85 PathProgramCache]: Analyzing trace with hash -183138806, now seen corresponding path program 1 times [2023-12-25 22:43:23,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:23,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911957983] [2023-12-25 22:43:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:23,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:24,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:24,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156322928] [2023-12-25 22:43:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:24,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:24,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:24,067 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:24,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-25 22:43:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:28,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 21511 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:43:28,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 178 proven. 370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:29,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:43:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2023-12-25 22:43:29,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911957983] [2023-12-25 22:43:29,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156322928] [2023-12-25 22:43:29,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156322928] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:43:29,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:43:29,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:43:29,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120362626] [2023-12-25 22:43:29,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:29,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:43:29,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:43:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:43:29,576 INFO L87 Difference]: Start difference. First operand 7495 states and 12429 transitions. Second operand has 4 states, 4 states have (on average 1130.75) internal successors, (4523), 4 states have internal predecessors, (4523), 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) [2023-12-25 22:43:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:29,752 INFO L93 Difference]: Finished difference Result 20539 states and 34050 transitions. [2023-12-25 22:43:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:43:29,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1130.75) internal successors, (4523), 4 states have internal predecessors, (4523), 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 4886 [2023-12-25 22:43:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:29,769 INFO L225 Difference]: With dead ends: 20539 [2023-12-25 22:43:29,769 INFO L226 Difference]: Without dead ends: 13821 [2023-12-25 22:43:29,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9771 GetRequests, 9761 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:43:29,776 INFO L413 NwaCegarLoop]: 11910 mSDtfsCounter, 10459 mSDsluCounter, 22898 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10459 SdHoareTripleChecker+Valid, 34808 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:29,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10459 Valid, 34808 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:43:29,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2023-12-25 22:43:29,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 7500. [2023-12-25 22:43:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7500 states, 7499 states have (on average 1.6583544472596345) internal successors, (12436), 7499 states have internal predecessors, (12436), 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) [2023-12-25 22:43:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7500 states to 7500 states and 12436 transitions. [2023-12-25 22:43:29,861 INFO L78 Accepts]: Start accepts. Automaton has 7500 states and 12436 transitions. Word has length 4886 [2023-12-25 22:43:29,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:29,863 INFO L495 AbstractCegarLoop]: Abstraction has 7500 states and 12436 transitions. [2023-12-25 22:43:29,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1130.75) internal successors, (4523), 4 states have internal predecessors, (4523), 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) [2023-12-25 22:43:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 7500 states and 12436 transitions. [2023-12-25 22:43:29,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4888 [2023-12-25 22:43:29,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:29,984 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:30,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-25 22:43:30,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:30,184 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:30,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash 685864118, now seen corresponding path program 1 times [2023-12-25 22:43:30,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:30,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317198412] [2023-12-25 22:43:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:30,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:30,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:30,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48732952] [2023-12-25 22:43:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:30,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:30,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:30,457 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:30,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-25 22:43:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:35,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 21514 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:43:35,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 182 proven. 366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:36,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:43:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-25 22:43:36,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317198412] [2023-12-25 22:43:36,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48732952] [2023-12-25 22:43:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48732952] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:43:36,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:43:36,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:43:36,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890303112] [2023-12-25 22:43:36,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:36,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:43:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:36,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:43:36,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:43:36,134 INFO L87 Difference]: Start difference. First operand 7500 states and 12436 transitions. Second operand has 4 states, 4 states have (on average 1132.0) internal successors, (4528), 4 states have internal predecessors, (4528), 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) [2023-12-25 22:43:36,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:36,297 INFO L93 Difference]: Finished difference Result 20554 states and 34071 transitions. [2023-12-25 22:43:36,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:43:36,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1132.0) internal successors, (4528), 4 states have internal predecessors, (4528), 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 4887 [2023-12-25 22:43:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:36,313 INFO L225 Difference]: With dead ends: 20554 [2023-12-25 22:43:36,313 INFO L226 Difference]: Without dead ends: 13825 [2023-12-25 22:43:36,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9773 GetRequests, 9763 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:43:36,321 INFO L413 NwaCegarLoop]: 11900 mSDtfsCounter, 10456 mSDsluCounter, 22888 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10456 SdHoareTripleChecker+Valid, 34788 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:36,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10456 Valid, 34788 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:43:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13825 states. [2023-12-25 22:43:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13825 to 7505. [2023-12-25 22:43:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7505 states, 7504 states have (on average 1.658182302771855) internal successors, (12443), 7504 states have internal predecessors, (12443), 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) [2023-12-25 22:43:36,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 12443 transitions. [2023-12-25 22:43:36,414 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 12443 transitions. Word has length 4887 [2023-12-25 22:43:36,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:36,416 INFO L495 AbstractCegarLoop]: Abstraction has 7505 states and 12443 transitions. [2023-12-25 22:43:36,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1132.0) internal successors, (4528), 4 states have internal predecessors, (4528), 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) [2023-12-25 22:43:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 12443 transitions. [2023-12-25 22:43:36,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4889 [2023-12-25 22:43:36,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:36,538 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:43:36,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-25 22:43:36,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-12-25 22:43:36,739 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:36,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:36,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1185369430, now seen corresponding path program 1 times [2023-12-25 22:43:36,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:36,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26452496] [2023-12-25 22:43:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:36,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:37,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:37,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56664254] [2023-12-25 22:43:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:37,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:37,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:37,024 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:37,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-25 22:43:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:41,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 21517 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:43:41,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 186 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:42,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:43:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2023-12-25 22:43:42,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:42,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26452496] [2023-12-25 22:43:42,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:42,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56664254] [2023-12-25 22:43:42,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56664254] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:43:42,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:43:42,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:43:42,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652970679] [2023-12-25 22:43:42,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:42,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:43:42,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:42,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:43:42,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:43:42,695 INFO L87 Difference]: Start difference. First operand 7505 states and 12443 transitions. Second operand has 4 states, 4 states have (on average 1133.25) internal successors, (4533), 4 states have internal predecessors, (4533), 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) [2023-12-25 22:43:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:42,857 INFO L93 Difference]: Finished difference Result 20569 states and 34092 transitions. [2023-12-25 22:43:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:43:42,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1133.25) internal successors, (4533), 4 states have internal predecessors, (4533), 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 4888 [2023-12-25 22:43:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:42,873 INFO L225 Difference]: With dead ends: 20569 [2023-12-25 22:43:42,873 INFO L226 Difference]: Without dead ends: 13829 [2023-12-25 22:43:42,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9775 GetRequests, 9765 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:43:42,880 INFO L413 NwaCegarLoop]: 11890 mSDtfsCounter, 10453 mSDsluCounter, 22878 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10453 SdHoareTripleChecker+Valid, 34768 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:42,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10453 Valid, 34768 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:43:42,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13829 states. [2023-12-25 22:43:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13829 to 7510. [2023-12-25 22:43:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7510 states, 7509 states have (on average 1.658010387534958) internal successors, (12450), 7509 states have internal predecessors, (12450), 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) [2023-12-25 22:43:42,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7510 states to 7510 states and 12450 transitions. [2023-12-25 22:43:42,967 INFO L78 Accepts]: Start accepts. Automaton has 7510 states and 12450 transitions. Word has length 4888 [2023-12-25 22:43:42,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:42,969 INFO L495 AbstractCegarLoop]: Abstraction has 7510 states and 12450 transitions. [2023-12-25 22:43:42,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1133.25) internal successors, (4533), 4 states have internal predecessors, (4533), 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) [2023-12-25 22:43:42,970 INFO L276 IsEmpty]: Start isEmpty. Operand 7510 states and 12450 transitions. [2023-12-25 22:43:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4890 [2023-12-25 22:43:43,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:43,091 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:43,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-25 22:43:43,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:43,293 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:43,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1183590806, now seen corresponding path program 1 times [2023-12-25 22:43:43,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:43,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737471480] [2023-12-25 22:43:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:43,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:43,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:43,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818686551] [2023-12-25 22:43:43,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:43,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:43,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:43,584 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:43,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-25 22:43:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:48,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 21520 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:43:48,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 190 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:49,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:43:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-12-25 22:43:49,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:49,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737471480] [2023-12-25 22:43:49,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:49,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818686551] [2023-12-25 22:43:49,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818686551] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:43:49,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:43:49,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:43:49,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244766728] [2023-12-25 22:43:49,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:49,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:43:49,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:49,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:43:49,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:43:49,275 INFO L87 Difference]: Start difference. First operand 7510 states and 12450 transitions. Second operand has 4 states, 4 states have (on average 1134.5) internal successors, (4538), 4 states have internal predecessors, (4538), 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) [2023-12-25 22:43:49,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:49,439 INFO L93 Difference]: Finished difference Result 20584 states and 34113 transitions. [2023-12-25 22:43:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:43:49,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1134.5) internal successors, (4538), 4 states have internal predecessors, (4538), 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 4889 [2023-12-25 22:43:49,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:49,456 INFO L225 Difference]: With dead ends: 20584 [2023-12-25 22:43:49,456 INFO L226 Difference]: Without dead ends: 13833 [2023-12-25 22:43:49,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9777 GetRequests, 9767 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:43:49,463 INFO L413 NwaCegarLoop]: 11880 mSDtfsCounter, 10450 mSDsluCounter, 22868 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10450 SdHoareTripleChecker+Valid, 34748 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:49,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10450 Valid, 34748 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:43:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13833 states. [2023-12-25 22:43:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13833 to 7515. [2023-12-25 22:43:49,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 7514 states have (on average 1.6578387010912963) internal successors, (12457), 7514 states have internal predecessors, (12457), 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) [2023-12-25 22:43:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 12457 transitions. [2023-12-25 22:43:49,553 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 12457 transitions. Word has length 4889 [2023-12-25 22:43:49,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:49,555 INFO L495 AbstractCegarLoop]: Abstraction has 7515 states and 12457 transitions. [2023-12-25 22:43:49,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1134.5) internal successors, (4538), 4 states have internal predecessors, (4538), 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) [2023-12-25 22:43:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 12457 transitions. [2023-12-25 22:43:49,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4891 [2023-12-25 22:43:49,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:49,677 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:49,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-25 22:43:49,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-12-25 22:43:49,878 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:49,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1357802846, now seen corresponding path program 1 times [2023-12-25 22:43:49,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:49,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462415868] [2023-12-25 22:43:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:49,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:50,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:50,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011884344] [2023-12-25 22:43:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:50,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:50,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:50,162 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:50,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-25 22:43:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:43:54,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 21523 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:43:54,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:43:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 194 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:43:55,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:43:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2023-12-25 22:43:55,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:43:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462415868] [2023-12-25 22:43:55,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:43:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011884344] [2023-12-25 22:43:55,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011884344] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:43:55,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:43:55,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:43:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989884295] [2023-12-25 22:43:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:43:55,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:43:55,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:43:55,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:43:55,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:43:55,743 INFO L87 Difference]: Start difference. First operand 7515 states and 12457 transitions. Second operand has 4 states, 4 states have (on average 1135.75) internal successors, (4543), 4 states have internal predecessors, (4543), 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) [2023-12-25 22:43:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:43:55,908 INFO L93 Difference]: Finished difference Result 20599 states and 34134 transitions. [2023-12-25 22:43:55,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:43:55,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1135.75) internal successors, (4543), 4 states have internal predecessors, (4543), 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 4890 [2023-12-25 22:43:55,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:43:55,929 INFO L225 Difference]: With dead ends: 20599 [2023-12-25 22:43:55,929 INFO L226 Difference]: Without dead ends: 13837 [2023-12-25 22:43:55,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9779 GetRequests, 9769 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:43:55,937 INFO L413 NwaCegarLoop]: 11870 mSDtfsCounter, 10447 mSDsluCounter, 22858 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10447 SdHoareTripleChecker+Valid, 34728 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:43:55,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10447 Valid, 34728 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:43:55,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13837 states. [2023-12-25 22:43:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13837 to 7520. [2023-12-25 22:43:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7520 states, 7519 states have (on average 1.6576672429844395) internal successors, (12464), 7519 states have internal predecessors, (12464), 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) [2023-12-25 22:43:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 12464 transitions. [2023-12-25 22:43:56,023 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 12464 transitions. Word has length 4890 [2023-12-25 22:43:56,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:43:56,025 INFO L495 AbstractCegarLoop]: Abstraction has 7520 states and 12464 transitions. [2023-12-25 22:43:56,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1135.75) internal successors, (4543), 4 states have internal predecessors, (4543), 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) [2023-12-25 22:43:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 12464 transitions. [2023-12-25 22:43:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4892 [2023-12-25 22:43:56,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:43:56,147 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:43:56,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-25 22:43:56,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:56,349 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:43:56,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:43:56,349 INFO L85 PathProgramCache]: Analyzing trace with hash 517216798, now seen corresponding path program 1 times [2023-12-25 22:43:56,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:43:56,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410980229] [2023-12-25 22:43:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:56,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:43:56,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:43:56,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985178093] [2023-12-25 22:43:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:43:56,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:43:56,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:43:56,627 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:43:56,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-25 22:44:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:01,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 21526 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:44:01,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 198 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:02,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:44:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-12-25 22:44:02,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:02,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410980229] [2023-12-25 22:44:02,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:02,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985178093] [2023-12-25 22:44:02,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985178093] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:44:02,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:44:02,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:44:02,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535629477] [2023-12-25 22:44:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:02,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:44:02,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:02,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:44:02,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:44:02,255 INFO L87 Difference]: Start difference. First operand 7520 states and 12464 transitions. Second operand has 4 states, 4 states have (on average 1136.5) internal successors, (4546), 4 states have internal predecessors, (4546), 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) [2023-12-25 22:44:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:02,419 INFO L93 Difference]: Finished difference Result 20611 states and 34150 transitions. [2023-12-25 22:44:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:44:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1136.5) internal successors, (4546), 4 states have internal predecessors, (4546), 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 4891 [2023-12-25 22:44:02,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:02,436 INFO L225 Difference]: With dead ends: 20611 [2023-12-25 22:44:02,436 INFO L226 Difference]: Without dead ends: 13838 [2023-12-25 22:44:02,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9781 GetRequests, 9771 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:44:02,444 INFO L413 NwaCegarLoop]: 11865 mSDtfsCounter, 10446 mSDsluCounter, 22853 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10446 SdHoareTripleChecker+Valid, 34718 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:02,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10446 Valid, 34718 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:44:02,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13838 states. [2023-12-25 22:44:02,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13838 to 7522. [2023-12-25 22:44:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7522 states, 7521 states have (on average 1.657492354740061) internal successors, (12466), 7521 states have internal predecessors, (12466), 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) [2023-12-25 22:44:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7522 states to 7522 states and 12466 transitions. [2023-12-25 22:44:02,532 INFO L78 Accepts]: Start accepts. Automaton has 7522 states and 12466 transitions. Word has length 4891 [2023-12-25 22:44:02,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:02,535 INFO L495 AbstractCegarLoop]: Abstraction has 7522 states and 12466 transitions. [2023-12-25 22:44:02,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1136.5) internal successors, (4546), 4 states have internal predecessors, (4546), 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) [2023-12-25 22:44:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 7522 states and 12466 transitions. [2023-12-25 22:44:02,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4893 [2023-12-25 22:44:02,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:02,658 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:44:02,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-25 22:44:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:02,859 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:02,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash 402265288, now seen corresponding path program 1 times [2023-12-25 22:44:02,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:02,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303144625] [2023-12-25 22:44:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:02,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:03,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:03,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670560715] [2023-12-25 22:44:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:03,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:03,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:03,147 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:03,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-25 22:44:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:07,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 21529 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:44:07,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 200 proven. 348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:08,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:44:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2023-12-25 22:44:08,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:08,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303144625] [2023-12-25 22:44:08,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:08,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670560715] [2023-12-25 22:44:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670560715] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:44:08,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:44:08,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:44:08,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242257271] [2023-12-25 22:44:08,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:08,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:44:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:08,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:44:08,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:44:08,752 INFO L87 Difference]: Start difference. First operand 7522 states and 12466 transitions. Second operand has 4 states, 4 states have (on average 1137.75) internal successors, (4551), 4 states have internal predecessors, (4551), 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) [2023-12-25 22:44:08,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:08,919 INFO L93 Difference]: Finished difference Result 20620 states and 34161 transitions. [2023-12-25 22:44:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:44:08,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1137.75) internal successors, (4551), 4 states have internal predecessors, (4551), 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 4892 [2023-12-25 22:44:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:08,935 INFO L225 Difference]: With dead ends: 20620 [2023-12-25 22:44:08,935 INFO L226 Difference]: Without dead ends: 13842 [2023-12-25 22:44:08,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9783 GetRequests, 9773 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:44:08,943 INFO L413 NwaCegarLoop]: 11855 mSDtfsCounter, 10441 mSDsluCounter, 22843 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10441 SdHoareTripleChecker+Valid, 34698 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:08,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10441 Valid, 34698 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:44:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13842 states. [2023-12-25 22:44:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13842 to 7527. [2023-12-25 22:44:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7527 states, 7526 states have (on average 1.6573212862078128) internal successors, (12473), 7526 states have internal predecessors, (12473), 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) [2023-12-25 22:44:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 12473 transitions. [2023-12-25 22:44:09,028 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 12473 transitions. Word has length 4892 [2023-12-25 22:44:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:09,030 INFO L495 AbstractCegarLoop]: Abstraction has 7527 states and 12473 transitions. [2023-12-25 22:44:09,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1137.75) internal successors, (4551), 4 states have internal predecessors, (4551), 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) [2023-12-25 22:44:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 12473 transitions. [2023-12-25 22:44:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4894 [2023-12-25 22:44:09,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:09,152 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:44:09,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-25 22:44:09,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2023-12-25 22:44:09,353 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:09,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:09,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1539226516, now seen corresponding path program 1 times [2023-12-25 22:44:09,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:09,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876394102] [2023-12-25 22:44:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:09,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:09,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:09,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732285977] [2023-12-25 22:44:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:09,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:09,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:09,639 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:09,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-25 22:44:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:14,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 21533 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:44:14,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 204 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:15,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:44:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-25 22:44:15,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:15,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876394102] [2023-12-25 22:44:15,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:15,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732285977] [2023-12-25 22:44:15,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732285977] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:44:15,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:44:15,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:44:15,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365891506] [2023-12-25 22:44:15,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:15,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:44:15,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:15,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:44:15,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:44:15,283 INFO L87 Difference]: Start difference. First operand 7527 states and 12473 transitions. Second operand has 4 states, 4 states have (on average 1139.0) internal successors, (4556), 4 states have internal predecessors, (4556), 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) [2023-12-25 22:44:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:15,447 INFO L93 Difference]: Finished difference Result 20635 states and 34182 transitions. [2023-12-25 22:44:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:44:15,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1139.0) internal successors, (4556), 4 states have internal predecessors, (4556), 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 4893 [2023-12-25 22:44:15,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:15,464 INFO L225 Difference]: With dead ends: 20635 [2023-12-25 22:44:15,464 INFO L226 Difference]: Without dead ends: 13846 [2023-12-25 22:44:15,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9785 GetRequests, 9775 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:44:15,472 INFO L413 NwaCegarLoop]: 11845 mSDtfsCounter, 10438 mSDsluCounter, 22833 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10438 SdHoareTripleChecker+Valid, 34678 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:15,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10438 Valid, 34678 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:44:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13846 states. [2023-12-25 22:44:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13846 to 7532. [2023-12-25 22:44:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7532 states, 7531 states have (on average 1.657150444828044) internal successors, (12480), 7531 states have internal predecessors, (12480), 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) [2023-12-25 22:44:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 12480 transitions. [2023-12-25 22:44:15,556 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 12480 transitions. Word has length 4893 [2023-12-25 22:44:15,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:15,558 INFO L495 AbstractCegarLoop]: Abstraction has 7532 states and 12480 transitions. [2023-12-25 22:44:15,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1139.0) internal successors, (4556), 4 states have internal predecessors, (4556), 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) [2023-12-25 22:44:15,559 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 12480 transitions. [2023-12-25 22:44:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4895 [2023-12-25 22:44:15,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:15,754 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:44:15,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-12-25 22:44:15,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:15,955 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:15,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:15,955 INFO L85 PathProgramCache]: Analyzing trace with hash -256276138, now seen corresponding path program 1 times [2023-12-25 22:44:15,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:15,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132853223] [2023-12-25 22:44:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:15,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:16,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:16,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030661287] [2023-12-25 22:44:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:16,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:16,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:16,236 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:16,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-25 22:44:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:20,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 21536 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:44:20,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 208 proven. 340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:21,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:44:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-25 22:44:21,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:21,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132853223] [2023-12-25 22:44:21,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:21,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030661287] [2023-12-25 22:44:21,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030661287] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:44:21,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:44:21,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:44:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475403603] [2023-12-25 22:44:21,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:21,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:44:21,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:21,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:44:21,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:44:21,700 INFO L87 Difference]: Start difference. First operand 7532 states and 12480 transitions. Second operand has 4 states, 4 states have (on average 1140.25) internal successors, (4561), 4 states have internal predecessors, (4561), 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) [2023-12-25 22:44:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:21,861 INFO L93 Difference]: Finished difference Result 20650 states and 34203 transitions. [2023-12-25 22:44:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:44:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1140.25) internal successors, (4561), 4 states have internal predecessors, (4561), 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 4894 [2023-12-25 22:44:21,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:21,876 INFO L225 Difference]: With dead ends: 20650 [2023-12-25 22:44:21,876 INFO L226 Difference]: Without dead ends: 13850 [2023-12-25 22:44:21,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9787 GetRequests, 9777 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:44:21,883 INFO L413 NwaCegarLoop]: 11835 mSDtfsCounter, 10435 mSDsluCounter, 22823 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10435 SdHoareTripleChecker+Valid, 34658 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:21,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10435 Valid, 34658 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:44:21,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13850 states. [2023-12-25 22:44:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13850 to 7537. [2023-12-25 22:44:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7537 states, 7536 states have (on average 1.65697983014862) internal successors, (12487), 7536 states have internal predecessors, (12487), 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) [2023-12-25 22:44:21,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7537 states to 7537 states and 12487 transitions. [2023-12-25 22:44:21,966 INFO L78 Accepts]: Start accepts. Automaton has 7537 states and 12487 transitions. Word has length 4894 [2023-12-25 22:44:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:21,968 INFO L495 AbstractCegarLoop]: Abstraction has 7537 states and 12487 transitions. [2023-12-25 22:44:21,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1140.25) internal successors, (4561), 4 states have internal predecessors, (4561), 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) [2023-12-25 22:44:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 7537 states and 12487 transitions. [2023-12-25 22:44:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4896 [2023-12-25 22:44:22,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:22,089 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:44:22,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-25 22:44:22,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:22,290 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:22,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1725068426, now seen corresponding path program 1 times [2023-12-25 22:44:22,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:22,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317701898] [2023-12-25 22:44:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:22,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:22,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:22,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45104844] [2023-12-25 22:44:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:22,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:22,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:22,639 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:22,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-25 22:44:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:27,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 21540 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:44:27,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 212 proven. 336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:28,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:44:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-25 22:44:28,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317701898] [2023-12-25 22:44:28,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45104844] [2023-12-25 22:44:28,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45104844] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:44:28,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:44:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:44:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899922029] [2023-12-25 22:44:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:28,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:44:28,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:28,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:44:28,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:44:28,119 INFO L87 Difference]: Start difference. First operand 7537 states and 12487 transitions. Second operand has 4 states, 4 states have (on average 1141.5) internal successors, (4566), 4 states have internal predecessors, (4566), 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) [2023-12-25 22:44:28,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:28,280 INFO L93 Difference]: Finished difference Result 20665 states and 34224 transitions. [2023-12-25 22:44:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:44:28,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1141.5) internal successors, (4566), 4 states have internal predecessors, (4566), 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 4895 [2023-12-25 22:44:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:28,297 INFO L225 Difference]: With dead ends: 20665 [2023-12-25 22:44:28,297 INFO L226 Difference]: Without dead ends: 13854 [2023-12-25 22:44:28,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9789 GetRequests, 9779 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:44:28,305 INFO L413 NwaCegarLoop]: 11825 mSDtfsCounter, 10432 mSDsluCounter, 22813 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10432 SdHoareTripleChecker+Valid, 34638 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:28,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10432 Valid, 34638 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:44:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13854 states. [2023-12-25 22:44:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13854 to 7542. [2023-12-25 22:44:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7542 states, 7541 states have (on average 1.656809441718605) internal successors, (12494), 7541 states have internal predecessors, (12494), 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) [2023-12-25 22:44:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7542 states to 7542 states and 12494 transitions. [2023-12-25 22:44:28,396 INFO L78 Accepts]: Start accepts. Automaton has 7542 states and 12494 transitions. Word has length 4895 [2023-12-25 22:44:28,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:28,398 INFO L495 AbstractCegarLoop]: Abstraction has 7542 states and 12494 transitions. [2023-12-25 22:44:28,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1141.5) internal successors, (4566), 4 states have internal predecessors, (4566), 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) [2023-12-25 22:44:28,399 INFO L276 IsEmpty]: Start isEmpty. Operand 7542 states and 12494 transitions. [2023-12-25 22:44:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4897 [2023-12-25 22:44:28,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:28,520 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:44:28,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-12-25 22:44:28,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2023-12-25 22:44:28,721 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:28,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:28,722 INFO L85 PathProgramCache]: Analyzing trace with hash 71143780, now seen corresponding path program 1 times [2023-12-25 22:44:28,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:28,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943820635] [2023-12-25 22:44:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:28,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:28,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:28,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821712201] [2023-12-25 22:44:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:29,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:29,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:29,001 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:29,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-25 22:44:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:33,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 21543 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:44:33,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 216 proven. 332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:34,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:44:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-25 22:44:34,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:34,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943820635] [2023-12-25 22:44:34,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:34,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821712201] [2023-12-25 22:44:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821712201] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:44:34,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:44:34,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:44:34,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448114787] [2023-12-25 22:44:34,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:34,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:44:34,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:34,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:44:34,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:44:34,560 INFO L87 Difference]: Start difference. First operand 7542 states and 12494 transitions. Second operand has 4 states, 4 states have (on average 1142.75) internal successors, (4571), 4 states have internal predecessors, (4571), 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) [2023-12-25 22:44:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:34,721 INFO L93 Difference]: Finished difference Result 20680 states and 34245 transitions. [2023-12-25 22:44:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:44:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1142.75) internal successors, (4571), 4 states have internal predecessors, (4571), 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 4896 [2023-12-25 22:44:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:34,737 INFO L225 Difference]: With dead ends: 20680 [2023-12-25 22:44:34,737 INFO L226 Difference]: Without dead ends: 13858 [2023-12-25 22:44:34,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9791 GetRequests, 9781 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:44:34,745 INFO L413 NwaCegarLoop]: 11815 mSDtfsCounter, 10429 mSDsluCounter, 22803 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10429 SdHoareTripleChecker+Valid, 34618 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:34,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10429 Valid, 34618 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:44:34,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13858 states. [2023-12-25 22:44:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13858 to 7547. [2023-12-25 22:44:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7547 states, 7546 states have (on average 1.6566392790882587) internal successors, (12501), 7546 states have internal predecessors, (12501), 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) [2023-12-25 22:44:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7547 states to 7547 states and 12501 transitions. [2023-12-25 22:44:34,830 INFO L78 Accepts]: Start accepts. Automaton has 7547 states and 12501 transitions. Word has length 4896 [2023-12-25 22:44:34,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:34,832 INFO L495 AbstractCegarLoop]: Abstraction has 7547 states and 12501 transitions. [2023-12-25 22:44:34,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1142.75) internal successors, (4571), 4 states have internal predecessors, (4571), 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) [2023-12-25 22:44:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 7547 states and 12501 transitions. [2023-12-25 22:44:34,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4898 [2023-12-25 22:44:34,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:34,953 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:44:35,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-25 22:44:35,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:35,154 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:35,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:35,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2047288576, now seen corresponding path program 1 times [2023-12-25 22:44:35,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:35,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078856151] [2023-12-25 22:44:35,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:35,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:35,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:35,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337085039] [2023-12-25 22:44:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:35,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:35,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:35,529 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:35,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-25 22:44:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:40,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 21547 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:44:40,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 220 proven. 328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:40,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:44:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-25 22:44:40,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:40,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078856151] [2023-12-25 22:44:40,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:40,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337085039] [2023-12-25 22:44:40,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337085039] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:44:40,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:44:40,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:44:40,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052965700] [2023-12-25 22:44:40,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:40,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:44:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:40,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:44:40,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:44:40,971 INFO L87 Difference]: Start difference. First operand 7547 states and 12501 transitions. Second operand has 4 states, 4 states have (on average 1144.0) internal successors, (4576), 4 states have internal predecessors, (4576), 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) [2023-12-25 22:44:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:41,132 INFO L93 Difference]: Finished difference Result 20695 states and 34266 transitions. [2023-12-25 22:44:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:44:41,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1144.0) internal successors, (4576), 4 states have internal predecessors, (4576), 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 4897 [2023-12-25 22:44:41,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:41,148 INFO L225 Difference]: With dead ends: 20695 [2023-12-25 22:44:41,148 INFO L226 Difference]: Without dead ends: 13862 [2023-12-25 22:44:41,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9793 GetRequests, 9783 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:44:41,155 INFO L413 NwaCegarLoop]: 11805 mSDtfsCounter, 10426 mSDsluCounter, 22793 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10426 SdHoareTripleChecker+Valid, 34598 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:41,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10426 Valid, 34598 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:44:41,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13862 states. [2023-12-25 22:44:41,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13862 to 7552. [2023-12-25 22:44:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7552 states, 7551 states have (on average 1.656469341809032) internal successors, (12508), 7551 states have internal predecessors, (12508), 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) [2023-12-25 22:44:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7552 states to 7552 states and 12508 transitions. [2023-12-25 22:44:41,237 INFO L78 Accepts]: Start accepts. Automaton has 7552 states and 12508 transitions. Word has length 4897 [2023-12-25 22:44:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:41,239 INFO L495 AbstractCegarLoop]: Abstraction has 7552 states and 12508 transitions. [2023-12-25 22:44:41,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1144.0) internal successors, (4576), 4 states have internal predecessors, (4576), 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) [2023-12-25 22:44:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 7552 states and 12508 transitions. [2023-12-25 22:44:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4899 [2023-12-25 22:44:41,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:41,361 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:44:41,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-25 22:44:41,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-12-25 22:44:41,562 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:41,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1315140366, now seen corresponding path program 1 times [2023-12-25 22:44:41,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:41,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484236539] [2023-12-25 22:44:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:41,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:41,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:41,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904663699] [2023-12-25 22:44:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:41,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:41,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:41,860 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:41,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-25 22:44:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:46,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 21550 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:44:46,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:47,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:44:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-12-25 22:44:47,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:47,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484236539] [2023-12-25 22:44:47,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:47,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904663699] [2023-12-25 22:44:47,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904663699] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:44:47,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:44:47,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:44:47,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153292774] [2023-12-25 22:44:47,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:47,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:44:47,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:47,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:44:47,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:44:47,475 INFO L87 Difference]: Start difference. First operand 7552 states and 12508 transitions. Second operand has 4 states, 4 states have (on average 1145.25) internal successors, (4581), 4 states have internal predecessors, (4581), 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) [2023-12-25 22:44:47,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:47,636 INFO L93 Difference]: Finished difference Result 20710 states and 34287 transitions. [2023-12-25 22:44:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:44:47,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1145.25) internal successors, (4581), 4 states have internal predecessors, (4581), 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 4898 [2023-12-25 22:44:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:47,650 INFO L225 Difference]: With dead ends: 20710 [2023-12-25 22:44:47,650 INFO L226 Difference]: Without dead ends: 13866 [2023-12-25 22:44:47,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9795 GetRequests, 9785 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:44:47,657 INFO L413 NwaCegarLoop]: 11795 mSDtfsCounter, 10423 mSDsluCounter, 22783 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10423 SdHoareTripleChecker+Valid, 34578 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:47,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10423 Valid, 34578 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:44:47,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13866 states. [2023-12-25 22:44:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13866 to 7557. [2023-12-25 22:44:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7557 states, 7556 states have (on average 1.6562996294335628) internal successors, (12515), 7556 states have internal predecessors, (12515), 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) [2023-12-25 22:44:47,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 12515 transitions. [2023-12-25 22:44:47,733 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 12515 transitions. Word has length 4898 [2023-12-25 22:44:47,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:47,735 INFO L495 AbstractCegarLoop]: Abstraction has 7557 states and 12515 transitions. [2023-12-25 22:44:47,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1145.25) internal successors, (4581), 4 states have internal predecessors, (4581), 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) [2023-12-25 22:44:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 12515 transitions. [2023-12-25 22:44:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4900 [2023-12-25 22:44:47,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:47,856 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:44:47,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-12-25 22:44:48,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:48,056 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:48,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1406358282, now seen corresponding path program 1 times [2023-12-25 22:44:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:48,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061160797] [2023-12-25 22:44:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:48,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:48,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904782859] [2023-12-25 22:44:48,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:48,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:48,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:48,411 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:48,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-25 22:44:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:52,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 21554 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:44:52,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:44:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 228 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:44:53,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:44:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-12-25 22:44:53,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:44:53,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061160797] [2023-12-25 22:44:53,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:44:53,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904782859] [2023-12-25 22:44:53,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904782859] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:44:53,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:44:53,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:44:53,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128298070] [2023-12-25 22:44:53,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:44:53,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:44:53,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:44:53,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:44:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:44:53,865 INFO L87 Difference]: Start difference. First operand 7557 states and 12515 transitions. Second operand has 4 states, 4 states have (on average 1146.5) internal successors, (4586), 4 states have internal predecessors, (4586), 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) [2023-12-25 22:44:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:44:54,026 INFO L93 Difference]: Finished difference Result 20725 states and 34308 transitions. [2023-12-25 22:44:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:44:54,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1146.5) internal successors, (4586), 4 states have internal predecessors, (4586), 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 4899 [2023-12-25 22:44:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:44:54,042 INFO L225 Difference]: With dead ends: 20725 [2023-12-25 22:44:54,042 INFO L226 Difference]: Without dead ends: 13870 [2023-12-25 22:44:54,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9797 GetRequests, 9787 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:44:54,049 INFO L413 NwaCegarLoop]: 11785 mSDtfsCounter, 10420 mSDsluCounter, 22773 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10420 SdHoareTripleChecker+Valid, 34558 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:44:54,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10420 Valid, 34558 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:44:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13870 states. [2023-12-25 22:44:54,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13870 to 7562. [2023-12-25 22:44:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7562 states, 7561 states have (on average 1.6561301415156726) internal successors, (12522), 7561 states have internal predecessors, (12522), 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) [2023-12-25 22:44:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7562 states to 7562 states and 12522 transitions. [2023-12-25 22:44:54,137 INFO L78 Accepts]: Start accepts. Automaton has 7562 states and 12522 transitions. Word has length 4899 [2023-12-25 22:44:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:44:54,139 INFO L495 AbstractCegarLoop]: Abstraction has 7562 states and 12522 transitions. [2023-12-25 22:44:54,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1146.5) internal successors, (4586), 4 states have internal predecessors, (4586), 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) [2023-12-25 22:44:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7562 states and 12522 transitions. [2023-12-25 22:44:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4901 [2023-12-25 22:44:54,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:44:54,260 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:44:54,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-12-25 22:44:54,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:54,461 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:44:54,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:44:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1413798912, now seen corresponding path program 1 times [2023-12-25 22:44:54,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:44:54,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848424009] [2023-12-25 22:44:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:54,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:44:54,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:44:54,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791723320] [2023-12-25 22:44:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:44:54,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:44:54,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:44:54,829 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:44:54,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-25 22:44:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:44:59,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 21557 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:44:59,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 232 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:00,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:45:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-25 22:45:00,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:00,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848424009] [2023-12-25 22:45:00,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:00,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791723320] [2023-12-25 22:45:00,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791723320] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:45:00,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:45:00,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:45:00,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076578724] [2023-12-25 22:45:00,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:00,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:45:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:00,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:45:00,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:00,306 INFO L87 Difference]: Start difference. First operand 7562 states and 12522 transitions. Second operand has 4 states, 4 states have (on average 1147.75) internal successors, (4591), 4 states have internal predecessors, (4591), 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) [2023-12-25 22:45:00,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:00,467 INFO L93 Difference]: Finished difference Result 20740 states and 34329 transitions. [2023-12-25 22:45:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:45:00,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1147.75) internal successors, (4591), 4 states have internal predecessors, (4591), 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 4900 [2023-12-25 22:45:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:00,482 INFO L225 Difference]: With dead ends: 20740 [2023-12-25 22:45:00,482 INFO L226 Difference]: Without dead ends: 13874 [2023-12-25 22:45:00,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9799 GetRequests, 9789 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:45:00,489 INFO L413 NwaCegarLoop]: 11775 mSDtfsCounter, 10417 mSDsluCounter, 22763 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10417 SdHoareTripleChecker+Valid, 34538 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:00,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10417 Valid, 34538 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:45:00,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13874 states. [2023-12-25 22:45:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13874 to 7567. [2023-12-25 22:45:00,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7567 states, 7566 states have (on average 1.655960877610362) internal successors, (12529), 7566 states have internal predecessors, (12529), 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) [2023-12-25 22:45:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7567 states to 7567 states and 12529 transitions. [2023-12-25 22:45:00,580 INFO L78 Accepts]: Start accepts. Automaton has 7567 states and 12529 transitions. Word has length 4900 [2023-12-25 22:45:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:00,583 INFO L495 AbstractCegarLoop]: Abstraction has 7567 states and 12529 transitions. [2023-12-25 22:45:00,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1147.75) internal successors, (4591), 4 states have internal predecessors, (4591), 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) [2023-12-25 22:45:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 7567 states and 12529 transitions. [2023-12-25 22:45:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4902 [2023-12-25 22:45:00,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:00,704 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:45:00,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-12-25 22:45:00,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:00,920 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:00,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:00,921 INFO L85 PathProgramCache]: Analyzing trace with hash 921365612, now seen corresponding path program 1 times [2023-12-25 22:45:00,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:00,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293216597] [2023-12-25 22:45:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:00,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:01,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:01,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364073379] [2023-12-25 22:45:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:01,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:01,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:01,285 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:01,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-25 22:45:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:05,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 21561 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:45:05,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 236 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:06,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:45:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-12-25 22:45:06,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:06,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293216597] [2023-12-25 22:45:06,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:06,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364073379] [2023-12-25 22:45:06,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364073379] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:45:06,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:45:06,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:45:06,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694698411] [2023-12-25 22:45:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:06,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:45:06,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:45:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:06,758 INFO L87 Difference]: Start difference. First operand 7567 states and 12529 transitions. Second operand has 4 states, 4 states have (on average 1148.75) internal successors, (4595), 4 states have internal predecessors, (4595), 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) [2023-12-25 22:45:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:06,916 INFO L93 Difference]: Finished difference Result 20755 states and 34349 transitions. [2023-12-25 22:45:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:45:06,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1148.75) internal successors, (4595), 4 states have internal predecessors, (4595), 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 4901 [2023-12-25 22:45:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:06,932 INFO L225 Difference]: With dead ends: 20755 [2023-12-25 22:45:06,932 INFO L226 Difference]: Without dead ends: 13878 [2023-12-25 22:45:06,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9801 GetRequests, 9791 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:45:06,939 INFO L413 NwaCegarLoop]: 11766 mSDtfsCounter, 10414 mSDsluCounter, 22754 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10414 SdHoareTripleChecker+Valid, 34520 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:06,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10414 Valid, 34520 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:45:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13878 states. [2023-12-25 22:45:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13878 to 7574. [2023-12-25 22:45:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7574 states, 7573 states have (on average 1.655618645186848) internal successors, (12538), 7573 states have internal predecessors, (12538), 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) [2023-12-25 22:45:07,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7574 states to 7574 states and 12538 transitions. [2023-12-25 22:45:07,024 INFO L78 Accepts]: Start accepts. Automaton has 7574 states and 12538 transitions. Word has length 4901 [2023-12-25 22:45:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:07,026 INFO L495 AbstractCegarLoop]: Abstraction has 7574 states and 12538 transitions. [2023-12-25 22:45:07,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1148.75) internal successors, (4595), 4 states have internal predecessors, (4595), 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) [2023-12-25 22:45:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7574 states and 12538 transitions. [2023-12-25 22:45:07,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4903 [2023-12-25 22:45:07,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:07,148 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:45:07,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-25 22:45:07,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:07,349 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:07,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1040392562, now seen corresponding path program 1 times [2023-12-25 22:45:07,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:07,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395540805] [2023-12-25 22:45:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:07,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:07,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:07,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214404038] [2023-12-25 22:45:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:07,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:07,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:07,628 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:07,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-25 22:45:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:12,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 21564 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:45:12,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 240 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:13,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:45:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-25 22:45:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395540805] [2023-12-25 22:45:13,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214404038] [2023-12-25 22:45:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214404038] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:45:13,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:45:13,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:45:13,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572055338] [2023-12-25 22:45:13,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:13,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:45:13,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:13,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:45:13,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:13,201 INFO L87 Difference]: Start difference. First operand 7574 states and 12538 transitions. Second operand has 4 states, 4 states have (on average 1150.0) internal successors, (4600), 4 states have internal predecessors, (4600), 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) [2023-12-25 22:45:13,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:13,360 INFO L93 Difference]: Finished difference Result 20774 states and 34374 transitions. [2023-12-25 22:45:13,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:45:13,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1150.0) internal successors, (4600), 4 states have internal predecessors, (4600), 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 4902 [2023-12-25 22:45:13,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:13,375 INFO L225 Difference]: With dead ends: 20774 [2023-12-25 22:45:13,375 INFO L226 Difference]: Without dead ends: 13886 [2023-12-25 22:45:13,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9803 GetRequests, 9793 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:45:13,382 INFO L413 NwaCegarLoop]: 11756 mSDtfsCounter, 10411 mSDsluCounter, 22744 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10411 SdHoareTripleChecker+Valid, 34500 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:13,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10411 Valid, 34500 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:45:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13886 states. [2023-12-25 22:45:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13886 to 7584. [2023-12-25 22:45:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7584 states, 7583 states have (on average 1.6552815508373995) internal successors, (12552), 7583 states have internal predecessors, (12552), 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) [2023-12-25 22:45:13,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7584 states to 7584 states and 12552 transitions. [2023-12-25 22:45:13,460 INFO L78 Accepts]: Start accepts. Automaton has 7584 states and 12552 transitions. Word has length 4902 [2023-12-25 22:45:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:13,461 INFO L495 AbstractCegarLoop]: Abstraction has 7584 states and 12552 transitions. [2023-12-25 22:45:13,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1150.0) internal successors, (4600), 4 states have internal predecessors, (4600), 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) [2023-12-25 22:45:13,462 INFO L276 IsEmpty]: Start isEmpty. Operand 7584 states and 12552 transitions. [2023-12-25 22:45:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4904 [2023-12-25 22:45:13,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:13,583 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:45:13,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-12-25 22:45:13,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:13,784 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:13,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:13,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1019331426, now seen corresponding path program 1 times [2023-12-25 22:45:13,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:13,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833790968] [2023-12-25 22:45:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:13,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:14,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:14,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468102494] [2023-12-25 22:45:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:14,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:14,061 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:14,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-25 22:45:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:18,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 21568 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:45:18,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 244 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:19,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:45:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-25 22:45:19,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:19,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833790968] [2023-12-25 22:45:19,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:19,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468102494] [2023-12-25 22:45:19,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468102494] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:45:19,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:45:19,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:45:19,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791815558] [2023-12-25 22:45:19,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:19,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:45:19,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:19,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:45:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:19,727 INFO L87 Difference]: Start difference. First operand 7584 states and 12552 transitions. Second operand has 4 states, 4 states have (on average 1151.0) internal successors, (4604), 4 states have internal predecessors, (4604), 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) [2023-12-25 22:45:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:19,906 INFO L93 Difference]: Finished difference Result 20801 states and 34410 transitions. [2023-12-25 22:45:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:45:19,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1151.0) internal successors, (4604), 4 states have internal predecessors, (4604), 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 4903 [2023-12-25 22:45:19,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:19,922 INFO L225 Difference]: With dead ends: 20801 [2023-12-25 22:45:19,922 INFO L226 Difference]: Without dead ends: 13900 [2023-12-25 22:45:19,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9805 GetRequests, 9795 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 22:45:19,929 INFO L413 NwaCegarLoop]: 11747 mSDtfsCounter, 10408 mSDsluCounter, 22735 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10408 SdHoareTripleChecker+Valid, 34482 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:19,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10408 Valid, 34482 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:45:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13900 states. [2023-12-25 22:45:20,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13900 to 7594. [2023-12-25 22:45:20,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 1.6548136441459238) internal successors, (12565), 7593 states have internal predecessors, (12565), 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) [2023-12-25 22:45:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 12565 transitions. [2023-12-25 22:45:20,018 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 12565 transitions. Word has length 4903 [2023-12-25 22:45:20,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:20,020 INFO L495 AbstractCegarLoop]: Abstraction has 7594 states and 12565 transitions. [2023-12-25 22:45:20,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1151.0) internal successors, (4604), 4 states have internal predecessors, (4604), 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) [2023-12-25 22:45:20,021 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 12565 transitions. [2023-12-25 22:45:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4905 [2023-12-25 22:45:20,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:20,141 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:45:20,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-12-25 22:45:20,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:20,342 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:20,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:20,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1222833308, now seen corresponding path program 1 times [2023-12-25 22:45:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:20,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291245782] [2023-12-25 22:45:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:20,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:20,624 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:20,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997532105] [2023-12-25 22:45:20,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:20,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:20,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:20,627 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:20,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-12-25 22:45:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:25,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 21571 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:45:25,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 248 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:26,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:45:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-12-25 22:45:26,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:26,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291245782] [2023-12-25 22:45:26,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:26,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997532105] [2023-12-25 22:45:26,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997532105] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:45:26,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:45:26,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:45:26,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148530608] [2023-12-25 22:45:26,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:26,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:45:26,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:26,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:45:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:45:26,272 INFO L87 Difference]: Start difference. First operand 7594 states and 12565 transitions. Second operand has 5 states, 5 states have (on average 921.4) internal successors, (4607), 5 states have internal predecessors, (4607), 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) [2023-12-25 22:45:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:26,569 INFO L93 Difference]: Finished difference Result 27730 states and 45861 transitions. [2023-12-25 22:45:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:45:26,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 921.4) internal successors, (4607), 5 states have internal predecessors, (4607), 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 4904 [2023-12-25 22:45:26,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:26,592 INFO L225 Difference]: With dead ends: 27730 [2023-12-25 22:45:26,592 INFO L226 Difference]: Without dead ends: 20813 [2023-12-25 22:45:26,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9806 GetRequests, 9795 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:45:26,601 INFO L413 NwaCegarLoop]: 22358 mSDtfsCounter, 21021 mSDsluCounter, 55692 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21021 SdHoareTripleChecker+Valid, 78050 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:26,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21021 Valid, 78050 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:45:26,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20813 states. [2023-12-25 22:45:26,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20813 to 7598. [2023-12-25 22:45:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:45:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:45:26,708 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4904 [2023-12-25 22:45:26,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:26,711 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:45:26,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 921.4) internal successors, (4607), 5 states have internal predecessors, (4607), 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) [2023-12-25 22:45:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:45:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4906 [2023-12-25 22:45:26,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:26,834 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:45:26,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-12-25 22:45:27,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2023-12-25 22:45:27,034 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:27,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash -527525060, now seen corresponding path program 1 times [2023-12-25 22:45:27,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:27,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453662323] [2023-12-25 22:45:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:27,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:27,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:27,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26596229] [2023-12-25 22:45:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:27,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:27,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:27,418 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:27,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-12-25 22:45:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:31,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 21574 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:45:31,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 244 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:32,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:45:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-12-25 22:45:32,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:32,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453662323] [2023-12-25 22:45:32,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:32,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26596229] [2023-12-25 22:45:32,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26596229] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:45:32,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:45:32,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:45:32,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037579177] [2023-12-25 22:45:32,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:32,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:45:32,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:45:32,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:32,895 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1151.5) internal successors, (4606), 4 states have internal predecessors, (4606), 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) [2023-12-25 22:45:33,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:33,080 INFO L93 Difference]: Finished difference Result 20580 states and 34036 transitions. [2023-12-25 22:45:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:45:33,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1151.5) internal successors, (4606), 4 states have internal predecessors, (4606), 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 4905 [2023-12-25 22:45:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:33,095 INFO L225 Difference]: With dead ends: 20580 [2023-12-25 22:45:33,095 INFO L226 Difference]: Without dead ends: 13903 [2023-12-25 22:45:33,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9808 GetRequests, 9799 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:33,102 INFO L413 NwaCegarLoop]: 21403 mSDtfsCounter, 10405 mSDsluCounter, 32388 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10405 SdHoareTripleChecker+Valid, 53791 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:33,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10405 Valid, 53791 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:45:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13903 states. [2023-12-25 22:45:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13903 to 7598. [2023-12-25 22:45:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:45:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:45:33,178 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4905 [2023-12-25 22:45:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:33,180 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:45:33,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1151.5) internal successors, (4606), 4 states have internal predecessors, (4606), 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) [2023-12-25 22:45:33,181 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:45:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4907 [2023-12-25 22:45:33,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:33,302 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:45:33,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-12-25 22:45:33,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:33,502 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:33,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:33,503 INFO L85 PathProgramCache]: Analyzing trace with hash 80376412, now seen corresponding path program 1 times [2023-12-25 22:45:33,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:33,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816400718] [2023-12-25 22:45:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:33,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:33,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:33,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300286039] [2023-12-25 22:45:33,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:33,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:33,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:33,779 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:33,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-12-25 22:45:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:38,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 21577 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:45:38,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 240 proven. 309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:39,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:45:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-12-25 22:45:39,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:39,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816400718] [2023-12-25 22:45:39,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:39,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300286039] [2023-12-25 22:45:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300286039] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:45:39,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:45:39,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:45:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144075185] [2023-12-25 22:45:39,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:39,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:45:39,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:39,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:45:39,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:45:39,379 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 920.6) internal successors, (4603), 5 states have internal predecessors, (4603), 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) [2023-12-25 22:45:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:39,670 INFO L93 Difference]: Finished difference Result 27700 states and 45814 transitions. [2023-12-25 22:45:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:45:39,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 920.6) internal successors, (4603), 5 states have internal predecessors, (4603), 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 4906 [2023-12-25 22:45:39,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:39,691 INFO L225 Difference]: With dead ends: 27700 [2023-12-25 22:45:39,692 INFO L226 Difference]: Without dead ends: 20800 [2023-12-25 22:45:39,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9810 GetRequests, 9799 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:45:39,701 INFO L413 NwaCegarLoop]: 22377 mSDtfsCounter, 21027 mSDsluCounter, 55730 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21027 SdHoareTripleChecker+Valid, 78107 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:39,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21027 Valid, 78107 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:45:39,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20800 states. [2023-12-25 22:45:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20800 to 7598. [2023-12-25 22:45:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:45:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:45:39,806 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4906 [2023-12-25 22:45:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:39,808 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:45:39,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 920.6) internal successors, (4603), 5 states have internal predecessors, (4603), 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) [2023-12-25 22:45:39,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:45:39,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4908 [2023-12-25 22:45:39,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:39,930 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:45:39,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-12-25 22:45:40,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:40,131 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:40,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1948131400, now seen corresponding path program 1 times [2023-12-25 22:45:40,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:40,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16659810] [2023-12-25 22:45:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:40,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:40,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:40,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158391136] [2023-12-25 22:45:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:40,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:40,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:40,409 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:40,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-12-25 22:45:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:45,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 21580 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:45:45,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 236 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:46,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:45:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-12-25 22:45:46,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:46,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16659810] [2023-12-25 22:45:46,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:46,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158391136] [2023-12-25 22:45:46,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158391136] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:45:46,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:45:46,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:45:46,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055514577] [2023-12-25 22:45:46,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:46,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:45:46,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:46,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:45:46,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:46,060 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1150.5) internal successors, (4602), 4 states have internal predecessors, (4602), 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) [2023-12-25 22:45:46,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:46,254 INFO L93 Difference]: Finished difference Result 20592 states and 34056 transitions. [2023-12-25 22:45:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:45:46,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1150.5) internal successors, (4602), 4 states have internal predecessors, (4602), 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 4907 [2023-12-25 22:45:46,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:46,271 INFO L225 Difference]: With dead ends: 20592 [2023-12-25 22:45:46,271 INFO L226 Difference]: Without dead ends: 13915 [2023-12-25 22:45:46,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9812 GetRequests, 9803 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:46,278 INFO L413 NwaCegarLoop]: 21410 mSDtfsCounter, 10411 mSDsluCounter, 32395 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10411 SdHoareTripleChecker+Valid, 53805 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:46,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10411 Valid, 53805 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:45:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13915 states. [2023-12-25 22:45:46,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13915 to 7598. [2023-12-25 22:45:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:45:46,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:45:46,379 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4907 [2023-12-25 22:45:46,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:46,381 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:45:46,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1150.5) internal successors, (4602), 4 states have internal predecessors, (4602), 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) [2023-12-25 22:45:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:45:46,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4909 [2023-12-25 22:45:46,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:46,624 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:45:46,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-12-25 22:45:46,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:46,825 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:46,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:46,826 INFO L85 PathProgramCache]: Analyzing trace with hash -337643620, now seen corresponding path program 1 times [2023-12-25 22:45:46,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:46,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368697672] [2023-12-25 22:45:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:47,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:47,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125764186] [2023-12-25 22:45:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:47,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:47,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:47,097 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:47,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-12-25 22:45:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:51,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 21583 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:45:51,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 232 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:52,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:45:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-12-25 22:45:52,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:52,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368697672] [2023-12-25 22:45:52,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:52,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125764186] [2023-12-25 22:45:52,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125764186] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:45:52,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:45:52,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:45:52,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030491056] [2023-12-25 22:45:52,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:52,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:45:52,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:52,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:45:52,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:52,574 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1149.75) internal successors, (4599), 4 states have internal predecessors, (4599), 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) [2023-12-25 22:45:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:52,735 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:45:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:45:52,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1149.75) internal successors, (4599), 4 states have internal predecessors, (4599), 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 4908 [2023-12-25 22:45:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:52,751 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:45:52,751 INFO L226 Difference]: Without dead ends: 13923 [2023-12-25 22:45:52,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9814 GetRequests, 9805 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:52,759 INFO L413 NwaCegarLoop]: 11776 mSDtfsCounter, 10414 mSDsluCounter, 22762 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10414 SdHoareTripleChecker+Valid, 34538 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:52,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10414 Valid, 34538 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:45:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13923 states. [2023-12-25 22:45:52,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13923 to 7598. [2023-12-25 22:45:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:45:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:45:52,845 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4908 [2023-12-25 22:45:52,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:52,847 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:45:52,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1149.75) internal successors, (4599), 4 states have internal predecessors, (4599), 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) [2023-12-25 22:45:52,848 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:45:52,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4910 [2023-12-25 22:45:52,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:52,968 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:45:53,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-12-25 22:45:53,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:53,169 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:53,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash -77043788, now seen corresponding path program 1 times [2023-12-25 22:45:53,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:53,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413236508] [2023-12-25 22:45:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:53,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:53,558 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:53,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919827077] [2023-12-25 22:45:53,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:53,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:53,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:53,560 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:53,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-12-25 22:45:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:45:58,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 21586 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:45:58,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:45:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 228 proven. 322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:45:58,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:45:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-12-25 22:45:59,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:45:59,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413236508] [2023-12-25 22:45:59,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:45:59,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919827077] [2023-12-25 22:45:59,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919827077] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:45:59,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:45:59,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:45:59,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477070142] [2023-12-25 22:45:59,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:45:59,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:45:59,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:45:59,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:45:59,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:59,016 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1149.5) internal successors, (4598), 4 states have internal predecessors, (4598), 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) [2023-12-25 22:45:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:45:59,172 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:45:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:45:59,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1149.5) internal successors, (4598), 4 states have internal predecessors, (4598), 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 4909 [2023-12-25 22:45:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:45:59,187 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:45:59,187 INFO L226 Difference]: Without dead ends: 13929 [2023-12-25 22:45:59,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9816 GetRequests, 9807 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:45:59,195 INFO L413 NwaCegarLoop]: 11786 mSDtfsCounter, 10417 mSDsluCounter, 22772 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10417 SdHoareTripleChecker+Valid, 34558 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:45:59,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10417 Valid, 34558 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:45:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13929 states. [2023-12-25 22:45:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13929 to 7598. [2023-12-25 22:45:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:45:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:45:59,278 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4909 [2023-12-25 22:45:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:45:59,280 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:45:59,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1149.5) internal successors, (4598), 4 states have internal predecessors, (4598), 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) [2023-12-25 22:45:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:45:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4911 [2023-12-25 22:45:59,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:45:59,402 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:45:59,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-12-25 22:45:59,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2023-12-25 22:45:59,603 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:45:59,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:45:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1769536420, now seen corresponding path program 1 times [2023-12-25 22:45:59,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:45:59,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605171293] [2023-12-25 22:45:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:59,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:45:59,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:45:59,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773027758] [2023-12-25 22:45:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:45:59,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:45:59,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:45:59,884 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:45:59,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-12-25 22:46:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:04,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 21589 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:46:04,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 224 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:05,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:46:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-25 22:46:05,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:05,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605171293] [2023-12-25 22:46:05,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773027758] [2023-12-25 22:46:05,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773027758] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:46:05,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:46:05,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:46:05,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234145321] [2023-12-25 22:46:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:05,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:46:05,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:05,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:46:05,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:05,475 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 919.4) internal successors, (4597), 5 states have internal predecessors, (4597), 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) [2023-12-25 22:46:05,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:05,900 INFO L93 Difference]: Finished difference Result 27672 states and 45772 transitions. [2023-12-25 22:46:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:46:05,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 919.4) internal successors, (4597), 5 states have internal predecessors, (4597), 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 4910 [2023-12-25 22:46:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:05,917 INFO L225 Difference]: With dead ends: 27672 [2023-12-25 22:46:05,917 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:46:05,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9818 GetRequests, 9807 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:05,922 INFO L413 NwaCegarLoop]: 22416 mSDtfsCounter, 21039 mSDsluCounter, 55808 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21039 SdHoareTripleChecker+Valid, 78224 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:05,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21039 Valid, 78224 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:46:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:46:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:46:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:46:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:46:06,020 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4910 [2023-12-25 22:46:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:06,022 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:46:06,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 919.4) internal successors, (4597), 5 states have internal predecessors, (4597), 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) [2023-12-25 22:46:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:46:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4912 [2023-12-25 22:46:06,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:06,146 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:46:06,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-12-25 22:46:06,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2023-12-25 22:46:06,360 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:06,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash 601125680, now seen corresponding path program 1 times [2023-12-25 22:46:06,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:06,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895293992] [2023-12-25 22:46:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:06,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:06,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:06,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108902213] [2023-12-25 22:46:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:06,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:06,641 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:06,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-12-25 22:46:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:11,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 21592 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:46:11,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 220 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:12,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:46:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-25 22:46:12,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:12,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895293992] [2023-12-25 22:46:12,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:12,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108902213] [2023-12-25 22:46:12,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108902213] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:46:12,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:46:12,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:46:12,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223557351] [2023-12-25 22:46:12,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:12,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:46:12,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:46:12,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:46:12,120 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1149.0) internal successors, (4596), 4 states have internal predecessors, (4596), 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) [2023-12-25 22:46:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:12,279 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:46:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:46:12,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1149.0) internal successors, (4596), 4 states have internal predecessors, (4596), 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 4911 [2023-12-25 22:46:12,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:12,294 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:46:12,294 INFO L226 Difference]: Without dead ends: 13941 [2023-12-25 22:46:12,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9820 GetRequests, 9811 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:46:12,301 INFO L413 NwaCegarLoop]: 11806 mSDtfsCounter, 10423 mSDsluCounter, 22792 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10423 SdHoareTripleChecker+Valid, 34598 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:12,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10423 Valid, 34598 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:46:12,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13941 states. [2023-12-25 22:46:12,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13941 to 7598. [2023-12-25 22:46:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:46:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:46:12,382 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4911 [2023-12-25 22:46:12,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:12,383 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:46:12,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1149.0) internal successors, (4596), 4 states have internal predecessors, (4596), 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) [2023-12-25 22:46:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:46:12,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4913 [2023-12-25 22:46:12,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:12,591 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:46:12,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-12-25 22:46:12,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2023-12-25 22:46:12,792 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:12,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1643845788, now seen corresponding path program 1 times [2023-12-25 22:46:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:12,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15620667] [2023-12-25 22:46:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:12,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:13,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:13,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854685234] [2023-12-25 22:46:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:13,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:13,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:13,082 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:13,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-12-25 22:46:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:17,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 21595 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:46:17,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 216 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:18,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:46:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-25 22:46:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15620667] [2023-12-25 22:46:18,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:18,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854685234] [2023-12-25 22:46:18,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854685234] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:46:18,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:46:18,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:46:18,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507122655] [2023-12-25 22:46:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:18,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:46:18,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:18,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:46:18,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:18,550 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 919.0) internal successors, (4595), 5 states have internal predecessors, (4595), 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) [2023-12-25 22:46:18,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:18,855 INFO L93 Difference]: Finished difference Result 27660 states and 45752 transitions. [2023-12-25 22:46:18,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:46:18,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 919.0) internal successors, (4595), 5 states have internal predecessors, (4595), 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 4912 [2023-12-25 22:46:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:18,878 INFO L225 Difference]: With dead ends: 27660 [2023-12-25 22:46:18,878 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:46:18,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9822 GetRequests, 9811 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:18,887 INFO L413 NwaCegarLoop]: 22436 mSDtfsCounter, 21045 mSDsluCounter, 55848 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21045 SdHoareTripleChecker+Valid, 78284 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:18,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21045 Valid, 78284 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:46:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:46:18,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:46:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:46:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:46:18,996 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4912 [2023-12-25 22:46:18,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:18,998 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:46:18,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 919.0) internal successors, (4595), 5 states have internal predecessors, (4595), 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) [2023-12-25 22:46:18,999 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:46:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4914 [2023-12-25 22:46:19,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:19,216 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:46:19,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-12-25 22:46:19,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:19,417 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:19,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:19,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1875885524, now seen corresponding path program 1 times [2023-12-25 22:46:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:19,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953051543] [2023-12-25 22:46:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:19,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:19,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:19,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617949281] [2023-12-25 22:46:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:19,699 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:19,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-12-25 22:46:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:24,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 21598 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:46:24,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 212 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:25,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:46:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-25 22:46:25,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953051543] [2023-12-25 22:46:25,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617949281] [2023-12-25 22:46:25,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617949281] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:46:25,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:46:25,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:46:25,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167227204] [2023-12-25 22:46:25,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:25,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:46:25,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:25,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:46:25,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:46:25,209 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1148.5) internal successors, (4594), 4 states have internal predecessors, (4594), 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) [2023-12-25 22:46:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:25,373 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:46:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:46:25,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1148.5) internal successors, (4594), 4 states have internal predecessors, (4594), 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 4913 [2023-12-25 22:46:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:25,388 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:46:25,388 INFO L226 Difference]: Without dead ends: 13953 [2023-12-25 22:46:25,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9824 GetRequests, 9815 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:46:25,394 INFO L413 NwaCegarLoop]: 11826 mSDtfsCounter, 10429 mSDsluCounter, 22812 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10429 SdHoareTripleChecker+Valid, 34638 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:25,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10429 Valid, 34638 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:46:25,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13953 states. [2023-12-25 22:46:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13953 to 7598. [2023-12-25 22:46:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:46:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:46:25,476 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4913 [2023-12-25 22:46:25,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:25,478 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:46:25,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1148.5) internal successors, (4594), 4 states have internal predecessors, (4594), 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) [2023-12-25 22:46:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:46:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4915 [2023-12-25 22:46:25,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:25,696 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:46:25,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-12-25 22:46:25,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2023-12-25 22:46:25,896 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:25,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:25,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1615836252, now seen corresponding path program 1 times [2023-12-25 22:46:25,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:25,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466035218] [2023-12-25 22:46:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:25,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:26,178 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:26,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998106872] [2023-12-25 22:46:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:26,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:26,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:26,180 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:26,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-12-25 22:46:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:30,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 21601 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:46:30,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 208 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:31,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:46:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-25 22:46:31,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:31,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466035218] [2023-12-25 22:46:31,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:31,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998106872] [2023-12-25 22:46:31,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998106872] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:46:31,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:46:31,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:46:31,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152575950] [2023-12-25 22:46:31,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:31,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:46:31,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:46:31,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:31,666 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 918.6) internal successors, (4593), 5 states have internal predecessors, (4593), 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) [2023-12-25 22:46:31,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:31,970 INFO L93 Difference]: Finished difference Result 27648 states and 45732 transitions. [2023-12-25 22:46:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:46:31,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 918.6) internal successors, (4593), 5 states have internal predecessors, (4593), 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 4914 [2023-12-25 22:46:31,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:31,994 INFO L225 Difference]: With dead ends: 27648 [2023-12-25 22:46:31,994 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:46:32,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9826 GetRequests, 9815 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:32,004 INFO L413 NwaCegarLoop]: 22456 mSDtfsCounter, 21051 mSDsluCounter, 55888 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21051 SdHoareTripleChecker+Valid, 78344 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:32,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21051 Valid, 78344 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:46:32,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:46:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:46:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:46:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:46:32,109 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4914 [2023-12-25 22:46:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:32,110 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:46:32,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 918.6) internal successors, (4593), 5 states have internal predecessors, (4593), 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) [2023-12-25 22:46:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:46:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4916 [2023-12-25 22:46:32,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:32,232 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:46:32,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-12-25 22:46:32,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2023-12-25 22:46:32,433 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:32,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:32,433 INFO L85 PathProgramCache]: Analyzing trace with hash -304212824, now seen corresponding path program 1 times [2023-12-25 22:46:32,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:32,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067320194] [2023-12-25 22:46:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:32,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:32,810 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:32,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562275320] [2023-12-25 22:46:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:32,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:32,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:32,812 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:32,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-12-25 22:46:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:37,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 21604 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:46:37,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 204 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:38,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:46:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2023-12-25 22:46:38,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:38,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067320194] [2023-12-25 22:46:38,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:38,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562275320] [2023-12-25 22:46:38,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562275320] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:46:38,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:46:38,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:46:38,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295849101] [2023-12-25 22:46:38,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:38,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:46:38,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:38,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:46:38,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:46:38,354 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1148.0) internal successors, (4592), 4 states have internal predecessors, (4592), 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) [2023-12-25 22:46:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:38,520 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:46:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:46:38,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1148.0) internal successors, (4592), 4 states have internal predecessors, (4592), 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 4915 [2023-12-25 22:46:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:38,538 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:46:38,538 INFO L226 Difference]: Without dead ends: 13965 [2023-12-25 22:46:38,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9828 GetRequests, 9819 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:46:38,546 INFO L413 NwaCegarLoop]: 11846 mSDtfsCounter, 10435 mSDsluCounter, 22832 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10435 SdHoareTripleChecker+Valid, 34678 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:38,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10435 Valid, 34678 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:46:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13965 states. [2023-12-25 22:46:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13965 to 7598. [2023-12-25 22:46:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:46:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:46:38,648 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4915 [2023-12-25 22:46:38,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:38,650 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:46:38,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1148.0) internal successors, (4592), 4 states have internal predecessors, (4592), 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) [2023-12-25 22:46:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:46:38,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4917 [2023-12-25 22:46:38,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:38,775 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:46:38,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-12-25 22:46:38,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2023-12-25 22:46:38,976 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:38,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:38,976 INFO L85 PathProgramCache]: Analyzing trace with hash -932161636, now seen corresponding path program 1 times [2023-12-25 22:46:38,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:38,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127763745] [2023-12-25 22:46:38,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:38,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:39,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:39,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12165773] [2023-12-25 22:46:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:39,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:39,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:39,417 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:39,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-12-25 22:46:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:44,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 21607 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:46:44,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 200 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:44,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:46:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-12-25 22:46:45,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:45,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127763745] [2023-12-25 22:46:45,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:45,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12165773] [2023-12-25 22:46:45,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12165773] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:46:45,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:46:45,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:46:45,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744630231] [2023-12-25 22:46:45,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:45,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:46:45,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:46:45,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:45,007 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 918.2) internal successors, (4591), 5 states have internal predecessors, (4591), 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) [2023-12-25 22:46:45,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:45,316 INFO L93 Difference]: Finished difference Result 27639 states and 45717 transitions. [2023-12-25 22:46:45,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:46:45,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 918.2) internal successors, (4591), 5 states have internal predecessors, (4591), 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 4916 [2023-12-25 22:46:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:45,341 INFO L225 Difference]: With dead ends: 27639 [2023-12-25 22:46:45,341 INFO L226 Difference]: Without dead ends: 20799 [2023-12-25 22:46:45,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9830 GetRequests, 9819 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:45,351 INFO L413 NwaCegarLoop]: 22476 mSDtfsCounter, 21057 mSDsluCounter, 55928 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21057 SdHoareTripleChecker+Valid, 78404 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:45,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21057 Valid, 78404 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:46:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20799 states. [2023-12-25 22:46:45,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20799 to 7598. [2023-12-25 22:46:45,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:46:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:46:45,474 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4916 [2023-12-25 22:46:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:45,476 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:46:45,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 918.2) internal successors, (4591), 5 states have internal predecessors, (4591), 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) [2023-12-25 22:46:45,477 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:46:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4918 [2023-12-25 22:46:45,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:45,599 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:46:45,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-12-25 22:46:45,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:45,812 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:45,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:45,813 INFO L85 PathProgramCache]: Analyzing trace with hash 412625572, now seen corresponding path program 1 times [2023-12-25 22:46:45,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:45,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420373139] [2023-12-25 22:46:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:45,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:46,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:46,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481179494] [2023-12-25 22:46:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:46,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:46,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:46,247 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:46,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-12-25 22:46:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:50,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 21610 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:46:50,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 194 proven. 356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:51,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:46:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-12-25 22:46:51,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:51,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420373139] [2023-12-25 22:46:51,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:51,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481179494] [2023-12-25 22:46:51,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481179494] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:46:51,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:46:51,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:46:51,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285712897] [2023-12-25 22:46:51,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:51,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:46:51,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:51,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:46:51,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:46:51,757 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1147.25) internal successors, (4589), 4 states have internal predecessors, (4589), 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) [2023-12-25 22:46:51,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:51,917 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:46:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:46:51,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1147.25) internal successors, (4589), 4 states have internal predecessors, (4589), 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 4917 [2023-12-25 22:46:51,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:51,933 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:46:51,933 INFO L226 Difference]: Without dead ends: 13980 [2023-12-25 22:46:51,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9832 GetRequests, 9823 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:46:51,940 INFO L413 NwaCegarLoop]: 11871 mSDtfsCounter, 10444 mSDsluCounter, 22857 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10444 SdHoareTripleChecker+Valid, 34728 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:51,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10444 Valid, 34728 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:46:51,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13980 states. [2023-12-25 22:46:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13980 to 7598. [2023-12-25 22:46:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:46:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:46:52,176 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4917 [2023-12-25 22:46:52,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:52,178 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:46:52,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1147.25) internal successors, (4589), 4 states have internal predecessors, (4589), 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) [2023-12-25 22:46:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:46:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4919 [2023-12-25 22:46:52,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:52,300 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:46:52,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2023-12-25 22:46:52,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2023-12-25 22:46:52,501 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:52,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:52,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2079408452, now seen corresponding path program 1 times [2023-12-25 22:46:52,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:52,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205098331] [2023-12-25 22:46:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:52,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:52,797 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:52,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591028659] [2023-12-25 22:46:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:52,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:52,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:52,799 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:52,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-12-25 22:46:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:46:57,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 21614 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:46:57,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:46:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 190 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:46:58,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:46:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2023-12-25 22:46:58,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:46:58,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205098331] [2023-12-25 22:46:58,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:46:58,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591028659] [2023-12-25 22:46:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591028659] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:46:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:46:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:46:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544071809] [2023-12-25 22:46:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:46:58,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:46:58,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:46:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:46:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:58,536 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 917.6) internal successors, (4588), 5 states have internal predecessors, (4588), 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) [2023-12-25 22:46:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:46:58,850 INFO L93 Difference]: Finished difference Result 27621 states and 45687 transitions. [2023-12-25 22:46:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:46:58,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 917.6) internal successors, (4588), 5 states have internal predecessors, (4588), 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 4918 [2023-12-25 22:46:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:46:58,874 INFO L225 Difference]: With dead ends: 27621 [2023-12-25 22:46:58,874 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:46:58,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9834 GetRequests, 9823 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:46:58,885 INFO L413 NwaCegarLoop]: 22501 mSDtfsCounter, 21066 mSDsluCounter, 55978 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21066 SdHoareTripleChecker+Valid, 78479 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:46:58,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21066 Valid, 78479 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:46:58,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:46:58,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:46:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:46:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:46:59,001 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4918 [2023-12-25 22:46:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:46:59,003 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:46:59,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 917.6) internal successors, (4588), 5 states have internal predecessors, (4588), 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) [2023-12-25 22:46:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:46:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4920 [2023-12-25 22:46:59,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:46:59,127 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:46:59,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2023-12-25 22:46:59,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:59,328 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:46:59,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:46:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash -755897758, now seen corresponding path program 1 times [2023-12-25 22:46:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:46:59,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017431644] [2023-12-25 22:46:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:59,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:46:59,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:46:59,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552179055] [2023-12-25 22:46:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:46:59,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:46:59,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:46:59,618 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:46:59,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-12-25 22:47:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:04,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 21617 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:47:04,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 186 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:05,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:47:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-25 22:47:05,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:05,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017431644] [2023-12-25 22:47:05,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:05,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552179055] [2023-12-25 22:47:05,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552179055] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:47:05,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:47:05,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:47:05,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745447568] [2023-12-25 22:47:05,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:05,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:47:05,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:47:05,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:05,426 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 917.4) internal successors, (4587), 5 states have internal predecessors, (4587), 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) [2023-12-25 22:47:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:05,742 INFO L93 Difference]: Finished difference Result 27615 states and 45677 transitions. [2023-12-25 22:47:05,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:47:05,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 917.4) internal successors, (4587), 5 states have internal predecessors, (4587), 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 4919 [2023-12-25 22:47:05,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:05,768 INFO L225 Difference]: With dead ends: 27615 [2023-12-25 22:47:05,768 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:47:05,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9836 GetRequests, 9825 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:05,778 INFO L413 NwaCegarLoop]: 22511 mSDtfsCounter, 21069 mSDsluCounter, 55998 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21069 SdHoareTripleChecker+Valid, 78509 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:05,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21069 Valid, 78509 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:47:05,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:47:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:47:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:47:05,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:47:05,908 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4919 [2023-12-25 22:47:05,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:05,910 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:47:05,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 917.4) internal successors, (4587), 5 states have internal predecessors, (4587), 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) [2023-12-25 22:47:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:47:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4921 [2023-12-25 22:47:06,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:06,121 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:47:06,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-12-25 22:47:06,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:06,322 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:06,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:06,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1132749882, now seen corresponding path program 1 times [2023-12-25 22:47:06,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:06,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890265530] [2023-12-25 22:47:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:06,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:06,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:06,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208226131] [2023-12-25 22:47:06,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:06,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:06,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:06,624 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:06,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-12-25 22:47:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:11,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 21621 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:47:11,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 182 proven. 368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:12,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:47:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2023-12-25 22:47:12,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:12,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890265530] [2023-12-25 22:47:12,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:12,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208226131] [2023-12-25 22:47:12,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208226131] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:47:12,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:47:12,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:47:12,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172113184] [2023-12-25 22:47:12,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:12,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:47:12,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:47:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:12,353 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 917.2) internal successors, (4586), 5 states have internal predecessors, (4586), 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) [2023-12-25 22:47:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:12,655 INFO L93 Difference]: Finished difference Result 27609 states and 45667 transitions. [2023-12-25 22:47:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:47:12,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 917.2) internal successors, (4586), 5 states have internal predecessors, (4586), 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 4920 [2023-12-25 22:47:12,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:12,679 INFO L225 Difference]: With dead ends: 27609 [2023-12-25 22:47:12,679 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:47:12,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9838 GetRequests, 9827 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:12,689 INFO L413 NwaCegarLoop]: 22521 mSDtfsCounter, 21072 mSDsluCounter, 56018 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21072 SdHoareTripleChecker+Valid, 78539 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:12,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21072 Valid, 78539 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:47:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:47:12,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:47:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:47:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:47:12,798 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4920 [2023-12-25 22:47:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:12,800 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:47:12,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 917.2) internal successors, (4586), 5 states have internal predecessors, (4586), 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) [2023-12-25 22:47:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:47:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4922 [2023-12-25 22:47:12,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:12,923 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:47:12,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-12-25 22:47:13,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2023-12-25 22:47:13,124 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:13,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash -924780512, now seen corresponding path program 1 times [2023-12-25 22:47:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782938362] [2023-12-25 22:47:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:13,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:13,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661869607] [2023-12-25 22:47:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:13,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:13,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:13,404 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:13,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-12-25 22:47:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:18,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 21624 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:47:18,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 178 proven. 372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:19,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:47:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-12-25 22:47:19,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:19,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782938362] [2023-12-25 22:47:19,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:19,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661869607] [2023-12-25 22:47:19,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661869607] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:47:19,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:47:19,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:47:19,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112132885] [2023-12-25 22:47:19,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:19,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:47:19,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:19,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:47:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:19,615 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 917.0) internal successors, (4585), 5 states have internal predecessors, (4585), 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) [2023-12-25 22:47:19,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:19,954 INFO L93 Difference]: Finished difference Result 27603 states and 45657 transitions. [2023-12-25 22:47:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:47:19,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 917.0) internal successors, (4585), 5 states have internal predecessors, (4585), 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 4921 [2023-12-25 22:47:19,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:19,975 INFO L225 Difference]: With dead ends: 27603 [2023-12-25 22:47:19,975 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:47:19,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9840 GetRequests, 9829 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:19,983 INFO L413 NwaCegarLoop]: 22531 mSDtfsCounter, 21075 mSDsluCounter, 56038 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21075 SdHoareTripleChecker+Valid, 78569 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:19,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21075 Valid, 78569 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:47:19,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:47:20,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:47:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:47:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:47:20,136 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4921 [2023-12-25 22:47:20,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:20,138 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:47:20,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 917.0) internal successors, (4585), 5 states have internal predecessors, (4585), 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) [2023-12-25 22:47:20,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:47:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4923 [2023-12-25 22:47:20,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:20,289 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:47:20,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2023-12-25 22:47:20,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:20,490 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:20,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1139509320, now seen corresponding path program 1 times [2023-12-25 22:47:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:20,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590343411] [2023-12-25 22:47:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:20,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:20,779 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:20,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643167680] [2023-12-25 22:47:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:20,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:20,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:20,782 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:20,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-12-25 22:47:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:25,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 21628 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:47:25,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 174 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:26,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:47:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-25 22:47:26,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:26,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590343411] [2023-12-25 22:47:26,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:26,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643167680] [2023-12-25 22:47:26,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643167680] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:47:26,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:47:26,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:47:26,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973036388] [2023-12-25 22:47:26,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:47:26,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:47:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:26,584 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 916.8) internal successors, (4584), 5 states have internal predecessors, (4584), 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) [2023-12-25 22:47:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:26,921 INFO L93 Difference]: Finished difference Result 27597 states and 45647 transitions. [2023-12-25 22:47:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:47:26,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 916.8) internal successors, (4584), 5 states have internal predecessors, (4584), 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 4922 [2023-12-25 22:47:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:26,940 INFO L225 Difference]: With dead ends: 27597 [2023-12-25 22:47:26,940 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:47:26,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9842 GetRequests, 9831 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:26,947 INFO L413 NwaCegarLoop]: 22541 mSDtfsCounter, 21078 mSDsluCounter, 56058 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21078 SdHoareTripleChecker+Valid, 78599 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:26,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21078 Valid, 78599 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:47:26,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:47:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:47:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:47:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:47:27,057 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4922 [2023-12-25 22:47:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:27,059 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:47:27,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 916.8) internal successors, (4584), 5 states have internal predecessors, (4584), 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) [2023-12-25 22:47:27,059 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:47:27,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4924 [2023-12-25 22:47:27,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:27,207 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:47:27,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2023-12-25 22:47:27,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2023-12-25 22:47:27,408 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:27,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:27,409 INFO L85 PathProgramCache]: Analyzing trace with hash 987411422, now seen corresponding path program 1 times [2023-12-25 22:47:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:27,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692100104] [2023-12-25 22:47:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:27,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:27,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:27,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558404442] [2023-12-25 22:47:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:27,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:27,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:27,704 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:27,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-12-25 22:47:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:32,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 21631 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:47:32,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 170 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:33,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:47:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-25 22:47:33,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:33,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692100104] [2023-12-25 22:47:33,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:33,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558404442] [2023-12-25 22:47:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558404442] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:47:33,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:47:33,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:47:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712162686] [2023-12-25 22:47:33,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:33,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:47:33,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:47:33,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:47:33,503 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1145.75) internal successors, (4583), 4 states have internal predecessors, (4583), 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) [2023-12-25 22:47:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:33,672 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:47:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:47:33,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1145.75) internal successors, (4583), 4 states have internal predecessors, (4583), 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 4923 [2023-12-25 22:47:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:33,690 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:47:33,690 INFO L226 Difference]: Without dead ends: 14016 [2023-12-25 22:47:33,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9844 GetRequests, 9835 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:47:33,697 INFO L413 NwaCegarLoop]: 11931 mSDtfsCounter, 10462 mSDsluCounter, 22917 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10462 SdHoareTripleChecker+Valid, 34848 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:33,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10462 Valid, 34848 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:47:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2023-12-25 22:47:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 7598. [2023-12-25 22:47:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:47:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:47:33,794 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4923 [2023-12-25 22:47:33,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:33,796 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:47:33,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1145.75) internal successors, (4583), 4 states have internal predecessors, (4583), 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) [2023-12-25 22:47:33,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:47:33,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4925 [2023-12-25 22:47:33,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:33,919 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:47:33,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-12-25 22:47:34,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2023-12-25 22:47:34,120 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:34,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:34,121 INFO L85 PathProgramCache]: Analyzing trace with hash 492807882, now seen corresponding path program 1 times [2023-12-25 22:47:34,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:34,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914419673] [2023-12-25 22:47:34,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:34,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:34,448 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:34,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040346900] [2023-12-25 22:47:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:34,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:34,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:34,450 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:34,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-12-25 22:47:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:39,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 21635 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:47:39,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 166 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:40,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:47:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-25 22:47:40,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914419673] [2023-12-25 22:47:40,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040346900] [2023-12-25 22:47:40,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040346900] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:47:40,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:47:40,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:47:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328039515] [2023-12-25 22:47:40,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:40,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:47:40,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:47:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:40,200 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 916.4) internal successors, (4582), 5 states have internal predecessors, (4582), 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) [2023-12-25 22:47:40,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:40,584 INFO L93 Difference]: Finished difference Result 27585 states and 45627 transitions. [2023-12-25 22:47:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:47:40,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 916.4) internal successors, (4582), 5 states have internal predecessors, (4582), 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 4924 [2023-12-25 22:47:40,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:40,605 INFO L225 Difference]: With dead ends: 27585 [2023-12-25 22:47:40,605 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:47:40,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9846 GetRequests, 9835 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:40,612 INFO L413 NwaCegarLoop]: 22561 mSDtfsCounter, 21084 mSDsluCounter, 56098 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21084 SdHoareTripleChecker+Valid, 78659 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:40,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21084 Valid, 78659 Invalid, 35 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:47:40,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:47:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:47:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:47:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:47:40,732 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4924 [2023-12-25 22:47:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:40,734 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:47:40,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 916.4) internal successors, (4582), 5 states have internal predecessors, (4582), 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) [2023-12-25 22:47:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:47:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4926 [2023-12-25 22:47:40,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:40,858 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:47:40,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-12-25 22:47:41,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2023-12-25 22:47:41,059 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:41,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:41,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1760264804, now seen corresponding path program 1 times [2023-12-25 22:47:41,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:41,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819835320] [2023-12-25 22:47:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:41,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:41,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:41,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995270538] [2023-12-25 22:47:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:41,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:41,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:41,340 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:41,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-12-25 22:47:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:45,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 21638 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:47:46,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 162 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:46,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:47:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-25 22:47:47,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819835320] [2023-12-25 22:47:47,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995270538] [2023-12-25 22:47:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995270538] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:47:47,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:47:47,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:47:47,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947713521] [2023-12-25 22:47:47,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:47,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:47:47,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:47:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:47,058 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 916.2) internal successors, (4581), 5 states have internal predecessors, (4581), 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) [2023-12-25 22:47:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:47,368 INFO L93 Difference]: Finished difference Result 27579 states and 45617 transitions. [2023-12-25 22:47:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:47:47,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 916.2) internal successors, (4581), 5 states have internal predecessors, (4581), 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 4925 [2023-12-25 22:47:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:47,391 INFO L225 Difference]: With dead ends: 27579 [2023-12-25 22:47:47,391 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:47:47,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9848 GetRequests, 9837 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:47:47,400 INFO L413 NwaCegarLoop]: 22571 mSDtfsCounter, 21087 mSDsluCounter, 56118 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21087 SdHoareTripleChecker+Valid, 78689 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:47,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21087 Valid, 78689 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:47:47,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:47:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:47:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:47:47,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:47:47,521 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4925 [2023-12-25 22:47:47,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:47,523 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:47:47,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 916.2) internal successors, (4581), 5 states have internal predecessors, (4581), 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) [2023-12-25 22:47:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:47:47,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4927 [2023-12-25 22:47:47,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:47,701 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:47:47,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2023-12-25 22:47:47,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:47,904 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:47,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:47,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1614190412, now seen corresponding path program 1 times [2023-12-25 22:47:47,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:47,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331309865] [2023-12-25 22:47:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:47,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:48,196 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:48,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079886848] [2023-12-25 22:47:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:48,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:48,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:48,198 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:48,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-12-25 22:47:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:52,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 21642 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:47:52,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:47:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 158 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:47:53,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:47:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-25 22:47:53,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:47:53,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331309865] [2023-12-25 22:47:53,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:47:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079886848] [2023-12-25 22:47:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079886848] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:47:53,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:47:53,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:47:53,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817442294] [2023-12-25 22:47:53,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:47:53,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:47:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:47:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:47:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:47:53,898 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1145.0) internal successors, (4580), 4 states have internal predecessors, (4580), 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) [2023-12-25 22:47:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:47:54,066 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:47:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:47:54,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1145.0) internal successors, (4580), 4 states have internal predecessors, (4580), 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 4926 [2023-12-25 22:47:54,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:47:54,082 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:47:54,082 INFO L226 Difference]: Without dead ends: 14034 [2023-12-25 22:47:54,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9850 GetRequests, 9841 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:47:54,089 INFO L413 NwaCegarLoop]: 11961 mSDtfsCounter, 10471 mSDsluCounter, 22947 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10471 SdHoareTripleChecker+Valid, 34908 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:47:54,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10471 Valid, 34908 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:47:54,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14034 states. [2023-12-25 22:47:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14034 to 7598. [2023-12-25 22:47:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:47:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:47:54,177 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4926 [2023-12-25 22:47:54,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:47:54,179 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:47:54,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1145.0) internal successors, (4580), 4 states have internal predecessors, (4580), 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) [2023-12-25 22:47:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:47:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4928 [2023-12-25 22:47:54,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:47:54,302 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:47:54,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-12-25 22:47:54,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:54,503 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:47:54,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:47:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1484540582, now seen corresponding path program 1 times [2023-12-25 22:47:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:47:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150107408] [2023-12-25 22:47:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:47:54,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:47:54,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705419555] [2023-12-25 22:47:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:47:54,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:47:54,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:47:54,843 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:47:54,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-12-25 22:47:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:47:59,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 21645 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:47:59,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 154 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:00,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:48:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2023-12-25 22:48:00,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:00,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150107408] [2023-12-25 22:48:00,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:00,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705419555] [2023-12-25 22:48:00,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705419555] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:48:00,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:48:00,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:48:00,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476851842] [2023-12-25 22:48:00,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:00,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:48:00,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:00,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:48:00,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:00,499 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 915.8) internal successors, (4579), 5 states have internal predecessors, (4579), 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) [2023-12-25 22:48:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:00,812 INFO L93 Difference]: Finished difference Result 27567 states and 45597 transitions. [2023-12-25 22:48:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:48:00,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 915.8) internal successors, (4579), 5 states have internal predecessors, (4579), 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 4927 [2023-12-25 22:48:00,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:00,835 INFO L225 Difference]: With dead ends: 27567 [2023-12-25 22:48:00,835 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:48:00,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9852 GetRequests, 9841 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:00,845 INFO L413 NwaCegarLoop]: 22591 mSDtfsCounter, 21093 mSDsluCounter, 56158 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21093 SdHoareTripleChecker+Valid, 78749 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:00,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21093 Valid, 78749 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:48:00,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:48:00,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:48:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:48:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:48:00,960 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4927 [2023-12-25 22:48:00,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:00,962 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:48:00,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 915.8) internal successors, (4579), 5 states have internal predecessors, (4579), 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) [2023-12-25 22:48:00,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:48:01,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4929 [2023-12-25 22:48:01,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:01,085 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:48:01,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2023-12-25 22:48:01,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2023-12-25 22:48:01,286 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:01,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1108277710, now seen corresponding path program 1 times [2023-12-25 22:48:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:01,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603785751] [2023-12-25 22:48:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:01,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:01,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:01,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935416150] [2023-12-25 22:48:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:01,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:01,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:01,624 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:01,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-12-25 22:48:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:06,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 21649 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:48:06,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 150 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:07,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:48:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2023-12-25 22:48:07,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603785751] [2023-12-25 22:48:07,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935416150] [2023-12-25 22:48:07,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935416150] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:48:07,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:48:07,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:48:07,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477842153] [2023-12-25 22:48:07,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:07,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:48:07,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:07,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:48:07,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:07,276 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 915.6) internal successors, (4578), 5 states have internal predecessors, (4578), 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) [2023-12-25 22:48:07,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:07,596 INFO L93 Difference]: Finished difference Result 27561 states and 45587 transitions. [2023-12-25 22:48:07,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:48:07,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 915.6) internal successors, (4578), 5 states have internal predecessors, (4578), 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 4928 [2023-12-25 22:48:07,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:07,624 INFO L225 Difference]: With dead ends: 27561 [2023-12-25 22:48:07,625 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:48:07,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9854 GetRequests, 9843 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:07,636 INFO L413 NwaCegarLoop]: 22601 mSDtfsCounter, 21096 mSDsluCounter, 56178 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21096 SdHoareTripleChecker+Valid, 78779 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:07,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21096 Valid, 78779 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:48:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:48:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:48:07,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:48:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:48:07,756 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4928 [2023-12-25 22:48:07,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:07,758 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:48:07,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 915.6) internal successors, (4578), 5 states have internal predecessors, (4578), 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) [2023-12-25 22:48:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:48:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4930 [2023-12-25 22:48:07,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:07,882 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:48:07,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2023-12-25 22:48:08,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2023-12-25 22:48:08,083 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:08,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1075987688, now seen corresponding path program 1 times [2023-12-25 22:48:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:08,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233896490] [2023-12-25 22:48:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:08,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:08,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:08,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158760606] [2023-12-25 22:48:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:08,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:08,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:08,374 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:08,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-12-25 22:48:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:13,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 21652 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:48:13,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 146 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:13,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:48:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-25 22:48:14,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:14,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233896490] [2023-12-25 22:48:14,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:14,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158760606] [2023-12-25 22:48:14,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158760606] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:48:14,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:48:14,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:48:14,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523621745] [2023-12-25 22:48:14,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:14,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:48:14,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:14,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:48:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:14,008 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 915.4) internal successors, (4577), 5 states have internal predecessors, (4577), 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) [2023-12-25 22:48:14,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:14,421 INFO L93 Difference]: Finished difference Result 27558 states and 45582 transitions. [2023-12-25 22:48:14,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:48:14,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 915.4) internal successors, (4577), 5 states have internal predecessors, (4577), 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 4929 [2023-12-25 22:48:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:14,439 INFO L225 Difference]: With dead ends: 27558 [2023-12-25 22:48:14,439 INFO L226 Difference]: Without dead ends: 20799 [2023-12-25 22:48:14,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9856 GetRequests, 9845 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:14,445 INFO L413 NwaCegarLoop]: 22611 mSDtfsCounter, 21099 mSDsluCounter, 56198 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21099 SdHoareTripleChecker+Valid, 78809 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:14,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21099 Valid, 78809 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:48:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20799 states. [2023-12-25 22:48:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20799 to 7598. [2023-12-25 22:48:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:48:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:48:14,541 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4929 [2023-12-25 22:48:14,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:14,543 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:48:14,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 915.4) internal successors, (4577), 5 states have internal predecessors, (4577), 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) [2023-12-25 22:48:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:48:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4931 [2023-12-25 22:48:14,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:14,666 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:48:14,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2023-12-25 22:48:14,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:14,866 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:14,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:14,867 INFO L85 PathProgramCache]: Analyzing trace with hash 684158544, now seen corresponding path program 1 times [2023-12-25 22:48:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:14,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776955770] [2023-12-25 22:48:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:14,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:15,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:15,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308664088] [2023-12-25 22:48:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:15,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:15,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:15,144 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:15,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-12-25 22:48:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:19,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 21656 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:48:19,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 140 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:20,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:48:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-12-25 22:48:20,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:20,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776955770] [2023-12-25 22:48:20,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:20,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308664088] [2023-12-25 22:48:20,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308664088] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:48:20,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:48:20,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:48:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272150648] [2023-12-25 22:48:20,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:20,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:48:20,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:48:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:48:20,813 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1143.75) internal successors, (4575), 4 states have internal predecessors, (4575), 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) [2023-12-25 22:48:20,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:20,983 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:48:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:48:20,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1143.75) internal successors, (4575), 4 states have internal predecessors, (4575), 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 4930 [2023-12-25 22:48:20,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:21,000 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:48:21,000 INFO L226 Difference]: Without dead ends: 14061 [2023-12-25 22:48:21,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9858 GetRequests, 9849 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:48:21,007 INFO L413 NwaCegarLoop]: 12006 mSDtfsCounter, 10486 mSDsluCounter, 22992 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10486 SdHoareTripleChecker+Valid, 34998 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:21,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10486 Valid, 34998 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:48:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14061 states. [2023-12-25 22:48:21,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14061 to 7598. [2023-12-25 22:48:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:48:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:48:21,102 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4930 [2023-12-25 22:48:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:21,104 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:48:21,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1143.75) internal successors, (4575), 4 states have internal predecessors, (4575), 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) [2023-12-25 22:48:21,105 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:48:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4932 [2023-12-25 22:48:21,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:21,309 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:48:21,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2023-12-25 22:48:21,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:21,510 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:21,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:21,510 INFO L85 PathProgramCache]: Analyzing trace with hash -536436036, now seen corresponding path program 1 times [2023-12-25 22:48:21,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:21,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559387496] [2023-12-25 22:48:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:21,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:21,810 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:21,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189011621] [2023-12-25 22:48:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:21,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:21,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:21,812 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:21,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-12-25 22:48:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:26,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 21659 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:48:26,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 136 proven. 414 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:27,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:48:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2023-12-25 22:48:27,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:27,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559387496] [2023-12-25 22:48:27,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:27,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189011621] [2023-12-25 22:48:27,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189011621] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:48:27,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:48:27,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:48:27,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636860947] [2023-12-25 22:48:27,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:27,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:48:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:48:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:27,309 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 914.8) internal successors, (4574), 5 states have internal predecessors, (4574), 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) [2023-12-25 22:48:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:27,718 INFO L93 Difference]: Finished difference Result 27540 states and 45552 transitions. [2023-12-25 22:48:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:48:27,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 914.8) internal successors, (4574), 5 states have internal predecessors, (4574), 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 4931 [2023-12-25 22:48:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:27,739 INFO L225 Difference]: With dead ends: 27540 [2023-12-25 22:48:27,739 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:48:27,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9860 GetRequests, 9849 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:27,747 INFO L413 NwaCegarLoop]: 22636 mSDtfsCounter, 21108 mSDsluCounter, 56248 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21108 SdHoareTripleChecker+Valid, 78884 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:27,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21108 Valid, 78884 Invalid, 35 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:48:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:48:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:48:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:48:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:48:27,863 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4931 [2023-12-25 22:48:27,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:27,865 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:48:27,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 914.8) internal successors, (4574), 5 states have internal predecessors, (4574), 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) [2023-12-25 22:48:27,866 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:48:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4933 [2023-12-25 22:48:27,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:27,989 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:48:28,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2023-12-25 22:48:28,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2023-12-25 22:48:28,190 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:28,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1192103124, now seen corresponding path program 1 times [2023-12-25 22:48:28,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:28,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947516578] [2023-12-25 22:48:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:28,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:28,480 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:28,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436893040] [2023-12-25 22:48:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:28,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:28,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:28,483 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:28,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-12-25 22:48:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:33,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 21662 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:48:33,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 132 proven. 418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:34,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:48:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2023-12-25 22:48:34,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:34,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947516578] [2023-12-25 22:48:34,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:34,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436893040] [2023-12-25 22:48:34,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436893040] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:48:34,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:48:34,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:48:34,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776672373] [2023-12-25 22:48:34,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:34,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:48:34,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:34,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:48:34,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:48:34,089 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1143.25) internal successors, (4573), 4 states have internal predecessors, (4573), 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) [2023-12-25 22:48:34,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:34,256 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:48:34,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:48:34,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1143.25) internal successors, (4573), 4 states have internal predecessors, (4573), 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 4932 [2023-12-25 22:48:34,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:34,273 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:48:34,274 INFO L226 Difference]: Without dead ends: 14073 [2023-12-25 22:48:34,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9862 GetRequests, 9853 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:48:34,281 INFO L413 NwaCegarLoop]: 12026 mSDtfsCounter, 10492 mSDsluCounter, 23012 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10492 SdHoareTripleChecker+Valid, 35038 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:34,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10492 Valid, 35038 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:48:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14073 states. [2023-12-25 22:48:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14073 to 7598. [2023-12-25 22:48:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:48:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:48:34,371 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4932 [2023-12-25 22:48:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:34,373 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:48:34,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1143.25) internal successors, (4573), 4 states have internal predecessors, (4573), 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) [2023-12-25 22:48:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:48:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4934 [2023-12-25 22:48:34,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:34,499 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:48:34,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2023-12-25 22:48:34,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2023-12-25 22:48:34,700 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:34,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1563139076, now seen corresponding path program 1 times [2023-12-25 22:48:34,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:34,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474333801] [2023-12-25 22:48:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:34,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:34,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:34,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537359158] [2023-12-25 22:48:34,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:34,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:34,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:34,978 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:34,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-12-25 22:48:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:39,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 21665 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:48:39,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 128 proven. 422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:40,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:48:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-25 22:48:40,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:40,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474333801] [2023-12-25 22:48:40,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:40,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537359158] [2023-12-25 22:48:40,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537359158] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:48:40,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:48:40,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:48:40,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935616283] [2023-12-25 22:48:40,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:40,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:48:40,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:40,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:48:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:40,636 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 914.4) internal successors, (4572), 5 states have internal predecessors, (4572), 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) [2023-12-25 22:48:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:40,957 INFO L93 Difference]: Finished difference Result 27528 states and 45532 transitions. [2023-12-25 22:48:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:48:40,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 914.4) internal successors, (4572), 5 states have internal predecessors, (4572), 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 4933 [2023-12-25 22:48:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:40,984 INFO L225 Difference]: With dead ends: 27528 [2023-12-25 22:48:40,984 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:48:40,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9864 GetRequests, 9853 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:40,994 INFO L413 NwaCegarLoop]: 22656 mSDtfsCounter, 21114 mSDsluCounter, 56288 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21114 SdHoareTripleChecker+Valid, 78944 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:40,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21114 Valid, 78944 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:48:41,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:48:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:48:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:48:41,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:48:41,116 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4933 [2023-12-25 22:48:41,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:41,119 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:48:41,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 914.4) internal successors, (4572), 5 states have internal predecessors, (4572), 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) [2023-12-25 22:48:41,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:48:41,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4935 [2023-12-25 22:48:41,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:41,323 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:48:41,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2023-12-25 22:48:41,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2023-12-25 22:48:41,538 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:41,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:41,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1083852840, now seen corresponding path program 1 times [2023-12-25 22:48:41,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:41,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133793784] [2023-12-25 22:48:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:41,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:41,825 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:41,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871964635] [2023-12-25 22:48:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:41,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:41,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:41,827 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:41,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-12-25 22:48:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:46,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 21668 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:48:46,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 124 proven. 426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:47,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:48:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-25 22:48:47,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:47,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133793784] [2023-12-25 22:48:47,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:47,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871964635] [2023-12-25 22:48:47,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871964635] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:48:47,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:48:47,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:48:47,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865202338] [2023-12-25 22:48:47,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:47,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:48:47,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:48:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:48:47,306 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1142.75) internal successors, (4571), 4 states have internal predecessors, (4571), 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) [2023-12-25 22:48:47,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:47,472 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:48:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:48:47,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1142.75) internal successors, (4571), 4 states have internal predecessors, (4571), 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 4934 [2023-12-25 22:48:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:47,488 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:48:47,488 INFO L226 Difference]: Without dead ends: 14085 [2023-12-25 22:48:47,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9866 GetRequests, 9857 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:48:47,495 INFO L413 NwaCegarLoop]: 12046 mSDtfsCounter, 10498 mSDsluCounter, 23032 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10498 SdHoareTripleChecker+Valid, 35078 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:47,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10498 Valid, 35078 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:48:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14085 states. [2023-12-25 22:48:47,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14085 to 7598. [2023-12-25 22:48:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:48:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:48:47,586 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4934 [2023-12-25 22:48:47,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:47,588 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:48:47,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1142.75) internal successors, (4571), 4 states have internal predecessors, (4571), 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) [2023-12-25 22:48:47,588 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:48:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4936 [2023-12-25 22:48:47,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:47,712 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:48:47,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2023-12-25 22:48:47,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2023-12-25 22:48:47,913 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:47,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:47,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1736191420, now seen corresponding path program 1 times [2023-12-25 22:48:47,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:47,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794955396] [2023-12-25 22:48:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:47,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:48,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:48,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98817105] [2023-12-25 22:48:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:48,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:48,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:48,275 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:48,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-12-25 22:48:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:52,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 21671 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:48:52,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:48:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 120 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:48:53,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:48:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2023-12-25 22:48:53,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:48:53,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794955396] [2023-12-25 22:48:53,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:48:53,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98817105] [2023-12-25 22:48:53,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98817105] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:48:53,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:48:53,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:48:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554864465] [2023-12-25 22:48:53,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:48:53,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:48:53,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:48:53,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:48:53,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:53,789 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 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) [2023-12-25 22:48:54,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:48:54,109 INFO L93 Difference]: Finished difference Result 27516 states and 45512 transitions. [2023-12-25 22:48:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:48:54,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 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 4935 [2023-12-25 22:48:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:48:54,134 INFO L225 Difference]: With dead ends: 27516 [2023-12-25 22:48:54,135 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:48:54,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9868 GetRequests, 9857 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:48:54,144 INFO L413 NwaCegarLoop]: 22676 mSDtfsCounter, 21120 mSDsluCounter, 56328 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21120 SdHoareTripleChecker+Valid, 79004 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:48:54,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21120 Valid, 79004 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:48:54,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:48:54,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:48:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:48:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:48:54,259 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4935 [2023-12-25 22:48:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:48:54,261 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:48:54,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 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) [2023-12-25 22:48:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:48:54,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4937 [2023-12-25 22:48:54,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:48:54,386 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:48:54,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2023-12-25 22:48:54,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2023-12-25 22:48:54,587 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:48:54,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:48:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1537462436, now seen corresponding path program 1 times [2023-12-25 22:48:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:48:54,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424803568] [2023-12-25 22:48:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:48:54,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:48:54,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290739310] [2023-12-25 22:48:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:48:54,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:48:54,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:48:54,955 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:48:54,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-12-25 22:48:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:48:59,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 21674 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:48:59,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:49:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 116 proven. 434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:49:00,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:49:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-25 22:49:00,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:49:00,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424803568] [2023-12-25 22:49:00,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:49:00,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290739310] [2023-12-25 22:49:00,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290739310] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:49:00,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:49:00,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:49:00,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470904804] [2023-12-25 22:49:00,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:49:00,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:49:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:49:00,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:49:00,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:49:00,473 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1142.25) internal successors, (4569), 4 states have internal predecessors, (4569), 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) [2023-12-25 22:49:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:00,650 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:49:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:49:00,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1142.25) internal successors, (4569), 4 states have internal predecessors, (4569), 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 4936 [2023-12-25 22:49:00,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:00,669 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:49:00,669 INFO L226 Difference]: Without dead ends: 14097 [2023-12-25 22:49:00,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9870 GetRequests, 9861 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:49:00,677 INFO L413 NwaCegarLoop]: 12066 mSDtfsCounter, 10504 mSDsluCounter, 23052 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10504 SdHoareTripleChecker+Valid, 35118 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:00,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10504 Valid, 35118 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:49:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14097 states. [2023-12-25 22:49:00,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14097 to 7598. [2023-12-25 22:49:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:49:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:49:00,771 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4936 [2023-12-25 22:49:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:00,773 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:49:00,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1142.25) internal successors, (4569), 4 states have internal predecessors, (4569), 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) [2023-12-25 22:49:00,774 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:49:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4938 [2023-12-25 22:49:00,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:00,898 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:49:00,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2023-12-25 22:49:01,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:01,099 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:01,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:01,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1834647548, now seen corresponding path program 1 times [2023-12-25 22:49:01,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:01,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648224975] [2023-12-25 22:49:01,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:01,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:01,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:01,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575289971] [2023-12-25 22:49:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:01,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:01,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:01,390 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:01,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2023-12-25 22:49:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:49:06,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 21677 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:49:06,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:49:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 112 proven. 438 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:49:06,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:49:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-12-25 22:49:07,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:49:07,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648224975] [2023-12-25 22:49:07,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:49:07,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575289971] [2023-12-25 22:49:07,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575289971] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:49:07,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:49:07,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:49:07,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533208767] [2023-12-25 22:49:07,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:49:07,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:49:07,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:49:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:49:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:49:07,034 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 913.6) internal successors, (4568), 5 states have internal predecessors, (4568), 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) [2023-12-25 22:49:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:07,351 INFO L93 Difference]: Finished difference Result 27504 states and 45492 transitions. [2023-12-25 22:49:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:49:07,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 913.6) internal successors, (4568), 5 states have internal predecessors, (4568), 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 4937 [2023-12-25 22:49:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:07,375 INFO L225 Difference]: With dead ends: 27504 [2023-12-25 22:49:07,375 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:49:07,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9872 GetRequests, 9861 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:49:07,385 INFO L413 NwaCegarLoop]: 22696 mSDtfsCounter, 21126 mSDsluCounter, 56368 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21126 SdHoareTripleChecker+Valid, 79064 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:07,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21126 Valid, 79064 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:49:07,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:49:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:49:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:49:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:49:07,500 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4937 [2023-12-25 22:49:07,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:07,502 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:49:07,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 913.6) internal successors, (4568), 5 states have internal predecessors, (4568), 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) [2023-12-25 22:49:07,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:49:07,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4939 [2023-12-25 22:49:07,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:07,628 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:49:07,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2023-12-25 22:49:07,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2023-12-25 22:49:07,836 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:07,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:07,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1423494304, now seen corresponding path program 1 times [2023-12-25 22:49:07,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:07,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709133593] [2023-12-25 22:49:07,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:07,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:08,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:08,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73813793] [2023-12-25 22:49:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:08,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:08,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:08,126 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:08,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2023-12-25 22:49:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:49:12,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 21680 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:49:12,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:49:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 108 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:49:13,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:49:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2023-12-25 22:49:13,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:49:13,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709133593] [2023-12-25 22:49:13,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:49:13,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73813793] [2023-12-25 22:49:13,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73813793] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:49:13,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:49:13,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:49:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017055251] [2023-12-25 22:49:13,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:49:13,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:49:13,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:49:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:49:13,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:49:13,850 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1141.75) internal successors, (4567), 4 states have internal predecessors, (4567), 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) [2023-12-25 22:49:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:14,020 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:49:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:49:14,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1141.75) internal successors, (4567), 4 states have internal predecessors, (4567), 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 4938 [2023-12-25 22:49:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:14,037 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:49:14,037 INFO L226 Difference]: Without dead ends: 14109 [2023-12-25 22:49:14,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9874 GetRequests, 9865 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:49:14,045 INFO L413 NwaCegarLoop]: 12086 mSDtfsCounter, 10510 mSDsluCounter, 23072 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10510 SdHoareTripleChecker+Valid, 35158 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:14,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10510 Valid, 35158 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:49:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14109 states. [2023-12-25 22:49:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14109 to 7598. [2023-12-25 22:49:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:49:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:49:14,131 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4938 [2023-12-25 22:49:14,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:14,133 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:49:14,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1141.75) internal successors, (4567), 4 states have internal predecessors, (4567), 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) [2023-12-25 22:49:14,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:49:14,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4940 [2023-12-25 22:49:14,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:14,258 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:49:14,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2023-12-25 22:49:14,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:14,458 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:14,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1812735300, now seen corresponding path program 1 times [2023-12-25 22:49:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183767] [2023-12-25 22:49:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:14,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:14,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629792464] [2023-12-25 22:49:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:14,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:14,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:14,742 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:14,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2023-12-25 22:49:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:49:19,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 21683 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:49:19,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:49:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 104 proven. 446 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:49:20,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:49:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-25 22:49:20,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:49:20,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183767] [2023-12-25 22:49:20,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:49:20,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629792464] [2023-12-25 22:49:20,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629792464] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:49:20,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:49:20,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:49:20,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883433285] [2023-12-25 22:49:20,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:49:20,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:49:20,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:49:20,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:49:20,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:49:20,437 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 913.2) internal successors, (4566), 5 states have internal predecessors, (4566), 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) [2023-12-25 22:49:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:20,757 INFO L93 Difference]: Finished difference Result 27492 states and 45472 transitions. [2023-12-25 22:49:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:49:20,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 913.2) internal successors, (4566), 5 states have internal predecessors, (4566), 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 4939 [2023-12-25 22:49:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:20,782 INFO L225 Difference]: With dead ends: 27492 [2023-12-25 22:49:20,782 INFO L226 Difference]: Without dead ends: 20796 [2023-12-25 22:49:20,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9876 GetRequests, 9865 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:49:20,793 INFO L413 NwaCegarLoop]: 22716 mSDtfsCounter, 21132 mSDsluCounter, 56408 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21132 SdHoareTripleChecker+Valid, 79124 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:20,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21132 Valid, 79124 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:49:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20796 states. [2023-12-25 22:49:20,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20796 to 7598. [2023-12-25 22:49:20,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:49:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:49:20,907 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4939 [2023-12-25 22:49:20,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:20,909 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:49:20,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 913.2) internal successors, (4566), 5 states have internal predecessors, (4566), 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) [2023-12-25 22:49:20,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:49:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4941 [2023-12-25 22:49:21,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:21,035 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:49:21,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2023-12-25 22:49:21,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:21,236 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:21,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:21,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1616608284, now seen corresponding path program 1 times [2023-12-25 22:49:21,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841341271] [2023-12-25 22:49:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:21,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:21,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:21,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971094196] [2023-12-25 22:49:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:21,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:21,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:21,610 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:21,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2023-12-25 22:49:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:49:26,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 21686 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:49:26,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:49:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 100 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:49:27,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:49:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2023-12-25 22:49:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:49:27,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841341271] [2023-12-25 22:49:27,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:49:27,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971094196] [2023-12-25 22:49:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971094196] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:49:27,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:49:27,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:49:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374342709] [2023-12-25 22:49:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:49:27,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:49:27,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:49:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:49:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:49:27,152 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1141.25) internal successors, (4565), 4 states have internal predecessors, (4565), 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) [2023-12-25 22:49:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:27,322 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:49:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:49:27,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1141.25) internal successors, (4565), 4 states have internal predecessors, (4565), 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 4940 [2023-12-25 22:49:27,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:27,337 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:49:27,337 INFO L226 Difference]: Without dead ends: 14121 [2023-12-25 22:49:27,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9878 GetRequests, 9869 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:49:27,344 INFO L413 NwaCegarLoop]: 12106 mSDtfsCounter, 10516 mSDsluCounter, 23092 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10516 SdHoareTripleChecker+Valid, 35198 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:27,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10516 Valid, 35198 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:49:27,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14121 states. [2023-12-25 22:49:27,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14121 to 7598. [2023-12-25 22:49:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:49:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:49:27,430 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4940 [2023-12-25 22:49:27,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:27,432 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:49:27,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1141.25) internal successors, (4565), 4 states have internal predecessors, (4565), 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) [2023-12-25 22:49:27,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:49:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4942 [2023-12-25 22:49:27,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:27,556 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:49:27,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2023-12-25 22:49:27,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:27,756 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:27,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:27,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1794424316, now seen corresponding path program 1 times [2023-12-25 22:49:27,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:27,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357695674] [2023-12-25 22:49:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:27,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:28,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:28,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367829936] [2023-12-25 22:49:28,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:28,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:28,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:28,036 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:28,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2023-12-25 22:49:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:49:32,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 21689 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:49:32,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:49:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 96 proven. 454 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:49:33,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:49:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-12-25 22:49:33,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:49:33,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357695674] [2023-12-25 22:49:33,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:49:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367829936] [2023-12-25 22:49:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367829936] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:49:33,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:49:33,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:49:33,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140911613] [2023-12-25 22:49:33,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:49:33,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:49:33,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:49:33,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:49:33,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:49:33,779 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1141.0) internal successors, (4564), 4 states have internal predecessors, (4564), 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) [2023-12-25 22:49:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:33,949 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:49:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:49:33,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1141.0) internal successors, (4564), 4 states have internal predecessors, (4564), 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 4941 [2023-12-25 22:49:33,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:33,965 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:49:33,965 INFO L226 Difference]: Without dead ends: 14127 [2023-12-25 22:49:33,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9880 GetRequests, 9871 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:49:33,972 INFO L413 NwaCegarLoop]: 12116 mSDtfsCounter, 10519 mSDsluCounter, 23102 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10519 SdHoareTripleChecker+Valid, 35218 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:33,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10519 Valid, 35218 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:49:33,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14127 states. [2023-12-25 22:49:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14127 to 7598. [2023-12-25 22:49:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:49:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:49:34,060 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4941 [2023-12-25 22:49:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:34,062 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:49:34,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1141.0) internal successors, (4564), 4 states have internal predecessors, (4564), 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) [2023-12-25 22:49:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:49:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4943 [2023-12-25 22:49:34,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:34,283 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:49:34,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2023-12-25 22:49:34,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable131 [2023-12-25 22:49:34,492 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:34,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:34,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1482285288, now seen corresponding path program 1 times [2023-12-25 22:49:34,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:34,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217889234] [2023-12-25 22:49:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:34,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:34,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:34,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105886918] [2023-12-25 22:49:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:34,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:34,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:34,770 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:34,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2023-12-25 22:49:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:49:39,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 21692 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 22:49:39,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:49:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 92 proven. 458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:49:40,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:49:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2023-12-25 22:49:40,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:49:40,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217889234] [2023-12-25 22:49:40,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:49:40,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105886918] [2023-12-25 22:49:40,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105886918] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:49:40,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:49:40,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-25 22:49:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947932528] [2023-12-25 22:49:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:49:40,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 22:49:40,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:49:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 22:49:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:49:40,322 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 4 states, 4 states have (on average 1140.75) internal successors, (4563), 4 states have internal predecessors, (4563), 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) [2023-12-25 22:49:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:40,496 INFO L93 Difference]: Finished difference Result 20811 states and 34421 transitions. [2023-12-25 22:49:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 22:49:40,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1140.75) internal successors, (4563), 4 states have internal predecessors, (4563), 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 4942 [2023-12-25 22:49:40,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:40,512 INFO L225 Difference]: With dead ends: 20811 [2023-12-25 22:49:40,512 INFO L226 Difference]: Without dead ends: 14133 [2023-12-25 22:49:40,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9882 GetRequests, 9873 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-25 22:49:40,519 INFO L413 NwaCegarLoop]: 12126 mSDtfsCounter, 10522 mSDsluCounter, 23112 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10522 SdHoareTripleChecker+Valid, 35238 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:40,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10522 Valid, 35238 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:49:40,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14133 states. [2023-12-25 22:49:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14133 to 7598. [2023-12-25 22:49:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:49:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:49:40,607 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4942 [2023-12-25 22:49:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:40,609 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:49:40,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1140.75) internal successors, (4563), 4 states have internal predecessors, (4563), 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) [2023-12-25 22:49:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:49:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4944 [2023-12-25 22:49:40,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:40,733 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:49:40,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2023-12-25 22:49:40,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:40,934 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:40,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1036932676, now seen corresponding path program 1 times [2023-12-25 22:49:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:40,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753670096] [2023-12-25 22:49:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:40,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:41,220 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:41,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239676267] [2023-12-25 22:49:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:41,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:41,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:41,222 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:41,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2023-12-25 22:49:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:49:45,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 21695 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:49:45,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:49:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 86 proven. 464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:49:46,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:49:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-12-25 22:49:46,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:49:46,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753670096] [2023-12-25 22:49:46,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:49:46,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239676267] [2023-12-25 22:49:46,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239676267] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:49:46,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:49:46,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:49:46,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026341856] [2023-12-25 22:49:46,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:49:46,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:49:46,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:49:46,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:49:46,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:49:46,854 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 912.2) internal successors, (4561), 5 states have internal predecessors, (4561), 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) [2023-12-25 22:49:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:47,180 INFO L93 Difference]: Finished difference Result 27480 states and 45452 transitions. [2023-12-25 22:49:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:49:47,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 912.2) internal successors, (4561), 5 states have internal predecessors, (4561), 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 4943 [2023-12-25 22:49:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:47,203 INFO L225 Difference]: With dead ends: 27480 [2023-12-25 22:49:47,203 INFO L226 Difference]: Without dead ends: 20803 [2023-12-25 22:49:47,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9884 GetRequests, 9873 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:49:47,213 INFO L413 NwaCegarLoop]: 22758 mSDtfsCounter, 21147 mSDsluCounter, 56492 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21147 SdHoareTripleChecker+Valid, 79250 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:47,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21147 Valid, 79250 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:49:47,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20803 states. [2023-12-25 22:49:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20803 to 7598. [2023-12-25 22:49:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:49:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:49:47,332 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4943 [2023-12-25 22:49:47,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:47,335 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:49:47,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 912.2) internal successors, (4561), 5 states have internal predecessors, (4561), 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) [2023-12-25 22:49:47,336 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:49:47,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4945 [2023-12-25 22:49:47,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:47,464 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:49:47,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2023-12-25 22:49:47,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2023-12-25 22:49:47,664 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:47,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash 799002962, now seen corresponding path program 1 times [2023-12-25 22:49:47,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:47,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394174817] [2023-12-25 22:49:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:47,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:48,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:48,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97433395] [2023-12-25 22:49:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:48,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:48,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:48,017 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:48,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2023-12-25 22:49:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:49:52,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 21698 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:49:52,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:49:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 82 proven. 468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:49:53,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:49:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2023-12-25 22:49:53,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:49:53,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394174817] [2023-12-25 22:49:53,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:49:53,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97433395] [2023-12-25 22:49:53,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97433395] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:49:53,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:49:53,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:49:53,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098155334] [2023-12-25 22:49:53,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:49:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:49:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:49:53,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:49:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:49:53,575 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 912.0) internal successors, (4560), 5 states have internal predecessors, (4560), 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) [2023-12-25 22:49:53,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:49:53,895 INFO L93 Difference]: Finished difference Result 27488 states and 45464 transitions. [2023-12-25 22:49:53,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:49:53,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 912.0) internal successors, (4560), 5 states have internal predecessors, (4560), 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 4944 [2023-12-25 22:49:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:49:53,918 INFO L225 Difference]: With dead ends: 27488 [2023-12-25 22:49:53,918 INFO L226 Difference]: Without dead ends: 20811 [2023-12-25 22:49:53,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9886 GetRequests, 9875 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:49:53,928 INFO L413 NwaCegarLoop]: 22765 mSDtfsCounter, 21150 mSDsluCounter, 56506 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21150 SdHoareTripleChecker+Valid, 79271 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:49:53,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21150 Valid, 79271 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:49:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20811 states. [2023-12-25 22:49:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20811 to 7598. [2023-12-25 22:49:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:49:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:49:54,037 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4944 [2023-12-25 22:49:54,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:49:54,039 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:49:54,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 912.0) internal successors, (4560), 5 states have internal predecessors, (4560), 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) [2023-12-25 22:49:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:49:54,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4946 [2023-12-25 22:49:54,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:49:54,164 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:49:54,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2023-12-25 22:49:54,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:54,365 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:49:54,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:49:54,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2117694214, now seen corresponding path program 1 times [2023-12-25 22:49:54,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:49:54,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55182093] [2023-12-25 22:49:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:54,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:49:54,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:49:54,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889242328] [2023-12-25 22:49:54,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:49:54,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:49:54,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:49:54,642 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:49:54,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2023-12-25 22:49:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:49:59,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 21702 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 22:49:59,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:50:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 70 proven. 480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:50:00,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:50:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2023-12-25 22:50:00,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:50:00,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55182093] [2023-12-25 22:50:00,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:50:00,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889242328] [2023-12-25 22:50:00,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889242328] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:50:00,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:50:00,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:50:00,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847830327] [2023-12-25 22:50:00,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:50:00,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:50:00,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:50:00,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:50:00,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:50:00,315 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 911.0) internal successors, (4555), 5 states have internal predecessors, (4555), 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) [2023-12-25 22:50:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:50:00,640 INFO L93 Difference]: Finished difference Result 27506 states and 45494 transitions. [2023-12-25 22:50:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:50:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 911.0) internal successors, (4555), 5 states have internal predecessors, (4555), 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 4945 [2023-12-25 22:50:00,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:50:00,664 INFO L225 Difference]: With dead ends: 27506 [2023-12-25 22:50:00,664 INFO L226 Difference]: Without dead ends: 20829 [2023-12-25 22:50:00,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9888 GetRequests, 9877 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:50:00,673 INFO L413 NwaCegarLoop]: 22786 mSDtfsCounter, 21159 mSDsluCounter, 56548 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21159 SdHoareTripleChecker+Valid, 79334 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:50:00,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21159 Valid, 79334 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:50:00,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20829 states. [2023-12-25 22:50:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20829 to 7598. [2023-12-25 22:50:00,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:50:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:50:00,782 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4945 [2023-12-25 22:50:00,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:50:00,784 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:50:00,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 911.0) internal successors, (4555), 5 states have internal predecessors, (4555), 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) [2023-12-25 22:50:00,785 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:50:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4947 [2023-12-25 22:50:00,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:50:00,907 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:50:00,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2023-12-25 22:50:01,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2023-12-25 22:50:01,108 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:50:01,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:50:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1670404760, now seen corresponding path program 1 times [2023-12-25 22:50:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:50:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200334274] [2023-12-25 22:50:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:50:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:50:01,467 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:50:01,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710068477] [2023-12-25 22:50:01,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:50:01,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:50:01,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:50:01,469 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:50:01,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2023-12-25 22:50:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:50:06,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 21705 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:50:06,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:50:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 50 proven. 500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:50:06,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:50:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2023-12-25 22:50:07,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:50:07,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200334274] [2023-12-25 22:50:07,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:50:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710068477] [2023-12-25 22:50:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710068477] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:50:07,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:50:07,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:50:07,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641257894] [2023-12-25 22:50:07,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:50:07,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:50:07,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:50:07,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:50:07,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:50:07,011 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 909.2) internal successors, (4546), 5 states have internal predecessors, (4546), 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) [2023-12-25 22:50:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:50:07,340 INFO L93 Difference]: Finished difference Result 27534 states and 45542 transitions. [2023-12-25 22:50:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:50:07,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 909.2) internal successors, (4546), 5 states have internal predecessors, (4546), 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 4946 [2023-12-25 22:50:07,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:50:07,364 INFO L225 Difference]: With dead ends: 27534 [2023-12-25 22:50:07,364 INFO L226 Difference]: Without dead ends: 20857 [2023-12-25 22:50:07,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9890 GetRequests, 9879 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:50:07,374 INFO L413 NwaCegarLoop]: 22821 mSDtfsCounter, 21174 mSDsluCounter, 56618 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21174 SdHoareTripleChecker+Valid, 79439 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:50:07,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21174 Valid, 79439 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:50:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20857 states. [2023-12-25 22:50:07,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20857 to 7598. [2023-12-25 22:50:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:50:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:50:07,492 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4946 [2023-12-25 22:50:07,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:50:07,494 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:50:07,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 909.2) internal successors, (4546), 5 states have internal predecessors, (4546), 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) [2023-12-25 22:50:07,495 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:50:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4948 [2023-12-25 22:50:07,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:50:07,619 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:50:07,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2023-12-25 22:50:07,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2023-12-25 22:50:07,820 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:50:07,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:50:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash -330210512, now seen corresponding path program 1 times [2023-12-25 22:50:07,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:50:07,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928971475] [2023-12-25 22:50:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:50:07,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:50:08,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:50:08,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306919824] [2023-12-25 22:50:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:50:08,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:50:08,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:50:08,106 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:50:08,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2023-12-25 22:50:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:50:12,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 21709 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 22:50:12,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:50:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 46 proven. 504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:50:13,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:50:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2023-12-25 22:50:13,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:50:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928971475] [2023-12-25 22:50:13,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:50:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306919824] [2023-12-25 22:50:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306919824] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 22:50:13,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 22:50:13,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-25 22:50:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466528698] [2023-12-25 22:50:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 22:50:13,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 22:50:13,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:50:13,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 22:50:13,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:50:13,785 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 5 states, 5 states have (on average 909.0) internal successors, (4545), 5 states have internal predecessors, (4545), 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) [2023-12-25 22:50:14,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:50:14,111 INFO L93 Difference]: Finished difference Result 27542 states and 45554 transitions. [2023-12-25 22:50:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 22:50:14,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 909.0) internal successors, (4545), 5 states have internal predecessors, (4545), 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 4947 [2023-12-25 22:50:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:50:14,133 INFO L225 Difference]: With dead ends: 27542 [2023-12-25 22:50:14,133 INFO L226 Difference]: Without dead ends: 20865 [2023-12-25 22:50:14,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9892 GetRequests, 9881 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 22:50:14,142 INFO L413 NwaCegarLoop]: 22828 mSDtfsCounter, 21177 mSDsluCounter, 56632 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21177 SdHoareTripleChecker+Valid, 79460 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 22:50:14,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21177 Valid, 79460 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 22:50:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20865 states. [2023-12-25 22:50:14,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20865 to 7598. [2023-12-25 22:50:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.6544688692905094) internal successors, (12569), 7597 states have internal predecessors, (12569), 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) [2023-12-25 22:50:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 12569 transitions. [2023-12-25 22:50:14,252 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 12569 transitions. Word has length 4947 [2023-12-25 22:50:14,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:50:14,254 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 12569 transitions. [2023-12-25 22:50:14,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 909.0) internal successors, (4545), 5 states have internal predecessors, (4545), 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) [2023-12-25 22:50:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 12569 transitions. [2023-12-25 22:50:14,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4949 [2023-12-25 22:50:14,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:50:14,379 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:50:14,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2023-12-25 22:50:14,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2023-12-25 22:50:14,584 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:50:14,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:50:14,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1613145958, now seen corresponding path program 1 times [2023-12-25 22:50:14,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:50:14,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433051481] [2023-12-25 22:50:14,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:50:14,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:50:14,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:50:14,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22535330] [2023-12-25 22:50:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:50:14,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:50:14,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:50:14,862 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:50:14,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2023-12-25 22:50:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:50:19,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 21712 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 22:50:19,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:50:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 250 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:50:24,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:50:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 284 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:50:28,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:50:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433051481] [2023-12-25 22:50:28,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:50:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22535330] [2023-12-25 22:50:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22535330] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:50:28,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 22:50:28,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2023-12-25 22:50:28,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717179629] [2023-12-25 22:50:28,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 22:50:28,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 22:50:28,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:50:28,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 22:50:28,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-12-25 22:50:28,857 INFO L87 Difference]: Start difference. First operand 7598 states and 12569 transitions. Second operand has 20 states, 20 states have (on average 476.15) internal successors, (9523), 20 states have internal predecessors, (9523), 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) [2023-12-25 22:50:53,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 22:50:53,743 INFO L93 Difference]: Finished difference Result 48086 states and 79041 transitions. [2023-12-25 22:50:53,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 22:50:53,745 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 476.15) internal successors, (9523), 20 states have internal predecessors, (9523), 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 4948 [2023-12-25 22:50:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 22:50:53,791 INFO L225 Difference]: With dead ends: 48086 [2023-12-25 22:50:53,791 INFO L226 Difference]: Without dead ends: 41409 [2023-12-25 22:50:53,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9921 GetRequests, 9883 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=368, Invalid=1192, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 22:50:53,807 INFO L413 NwaCegarLoop]: 27276 mSDtfsCounter, 158638 mSDsluCounter, 261349 mSDsCounter, 0 mSdLazyCounter, 50487 mSolverCounterSat, 945 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158638 SdHoareTripleChecker+Valid, 288625 SdHoareTripleChecker+Invalid, 51432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 945 IncrementalHoareTripleChecker+Valid, 50487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-12-25 22:50:53,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158638 Valid, 288625 Invalid, 51432 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [945 Valid, 50487 Invalid, 0 Unknown, 0 Unchecked, 22.1s Time] [2023-12-25 22:50:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41409 states. [2023-12-25 22:50:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41409 to 15712. [2023-12-25 22:50:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15712 states, 15711 states have (on average 1.654955126981096) internal successors, (26001), 15711 states have internal predecessors, (26001), 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) [2023-12-25 22:50:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15712 states to 15712 states and 26001 transitions. [2023-12-25 22:50:54,082 INFO L78 Accepts]: Start accepts. Automaton has 15712 states and 26001 transitions. Word has length 4948 [2023-12-25 22:50:54,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 22:50:54,084 INFO L495 AbstractCegarLoop]: Abstraction has 15712 states and 26001 transitions. [2023-12-25 22:50:54,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 476.15) internal successors, (9523), 20 states have internal predecessors, (9523), 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) [2023-12-25 22:50:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 15712 states and 26001 transitions. [2023-12-25 22:50:54,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4950 [2023-12-25 22:50:54,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 22:50:54,298 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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] [2023-12-25 22:50:54,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2023-12-25 22:50:54,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2023-12-25 22:50:54,499 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 22:50:54,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 22:50:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1721299510, now seen corresponding path program 1 times [2023-12-25 22:50:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 22:50:54,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357971230] [2023-12-25 22:50:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:50:54,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 22:50:54,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 22:50:54,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935244334] [2023-12-25 22:50:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 22:50:54,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:50:54,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 22:50:54,777 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 22:50:54,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2023-12-25 22:50:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 22:50:59,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 21715 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-25 22:50:59,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 22:51:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 198 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:51:11,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 22:51:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 244 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 22:51:27,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 22:51:27,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357971230] [2023-12-25 22:51:27,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 22:51:27,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935244334] [2023-12-25 22:51:27,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935244334] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 22:51:27,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 22:51:27,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28] total 46 [2023-12-25 22:51:27,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909260411] [2023-12-25 22:51:27,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 22:51:27,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 22:51:27,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 22:51:27,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 22:51:27,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 22:51:27,885 INFO L87 Difference]: Start difference. First operand 15712 states and 26001 transitions. Second operand has 46 states, 46 states have (on average 209.2391304347826) internal successors, (9625), 46 states have internal predecessors, (9625), 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) Received shutdown request... [2023-12-25 22:51:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2023-12-25 22:51:56,283 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 22:51:56,283 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 22:51:56,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10245 GetRequests, 9852 SyntacticMatches, 0 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65709 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=12488, Invalid=142354, Unknown=0, NotChecked=0, Total=154842 [2023-12-25 22:51:56,298 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 11203 mSDsluCounter, 16914 mSDsCounter, 0 mSdLazyCounter, 29597 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11203 SdHoareTripleChecker+Valid, 17549 SdHoareTripleChecker+Invalid, 29702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 29597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-12-25 22:51:56,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11203 Valid, 17549 Invalid, 29702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 29597 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2023-12-25 22:51:56,299 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 22:51:56,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2023-12-25 22:51:56,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 22:51:56,499 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (15712states) and FLOYD_HOARE automaton (currently 353 states, 46 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 394 known predicates. [2023-12-25 22:51:56,503 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 22:51:56,504 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 22:51:56,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 10:51:56 BoogieIcfgContainer [2023-12-25 22:51:56,505 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 22:51:56,506 INFO L158 Benchmark]: Toolchain (without parser) took 791432.01ms. Allocated memory was 221.2MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 169.9MB in the beginning and 1.0GB in the end (delta: -833.3MB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2023-12-25 22:51:56,506 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 221.2MB. Free memory was 173.8MB in the beginning and 173.6MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 22:51:56,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1306.24ms. Allocated memory was 221.2MB in the beginning and 315.6MB in the end (delta: 94.4MB). Free memory was 169.9MB in the beginning and 131.4MB in the end (delta: 38.5MB). Peak memory consumption was 134.9MB. Max. memory is 8.0GB. [2023-12-25 22:51:56,506 INFO L158 Benchmark]: Boogie Procedure Inliner took 2207.30ms. Allocated memory was 315.6MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 131.4MB in the beginning and 885.8MB in the end (delta: -754.4MB). Peak memory consumption was 312.5MB. Max. memory is 8.0GB. [2023-12-25 22:51:56,506 INFO L158 Benchmark]: Boogie Preprocessor took 2448.26ms. Allocated memory was 1.4GB in the beginning and 3.6GB in the end (delta: 2.3GB). Free memory was 885.8MB in the beginning and 3.0GB in the end (delta: -2.1GB). Peak memory consumption was 304.6MB. Max. memory is 8.0GB. [2023-12-25 22:51:56,506 INFO L158 Benchmark]: RCFGBuilder took 11050.50ms. Allocated memory was 3.6GB in the beginning and 4.6GB in the end (delta: 955.3MB). Free memory was 3.0GB in the beginning and 3.9GB in the end (delta: -827.9MB). Peak memory consumption was 832.0MB. Max. memory is 8.0GB. [2023-12-25 22:51:56,506 INFO L158 Benchmark]: TraceAbstraction took 774413.98ms. Allocated memory is still 4.6GB. Free memory was 3.9GB in the beginning and 1.0GB in the end (delta: 2.9GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-25 22:51:56,506 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 221.2MB. Free memory was 173.8MB in the beginning and 173.6MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1306.24ms. Allocated memory was 221.2MB in the beginning and 315.6MB in the end (delta: 94.4MB). Free memory was 169.9MB in the beginning and 131.4MB in the end (delta: 38.5MB). Peak memory consumption was 134.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 2207.30ms. Allocated memory was 315.6MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 131.4MB in the beginning and 885.8MB in the end (delta: -754.4MB). Peak memory consumption was 312.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 2448.26ms. Allocated memory was 1.4GB in the beginning and 3.6GB in the end (delta: 2.3GB). Free memory was 885.8MB in the beginning and 3.0GB in the end (delta: -2.1GB). Peak memory consumption was 304.6MB. Max. memory is 8.0GB. * RCFGBuilder took 11050.50ms. Allocated memory was 3.6GB in the beginning and 4.6GB in the end (delta: 955.3MB). Free memory was 3.0GB in the beginning and 3.9GB in the end (delta: -827.9MB). Peak memory consumption was 832.0MB. Max. memory is 8.0GB. * TraceAbstraction took 774413.98ms. Allocated memory is still 4.6GB. Free memory was 3.9GB in the beginning and 1.0GB in the end (delta: 2.9GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (15712states) and FLOYD_HOARE automaton (currently 353 states, 46 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 394 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6590 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 774.4s, OverallIterations: 140, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 13.2s, AutomataDifference: 92.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1908835 SdHoareTripleChecker+Valid, 46.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1908835 mSDsluCounter, 6476869 SdHoareTripleChecker+Invalid, 39.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4497506 mSDsCounter, 2203 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 92170 IncrementalHoareTripleChecker+Invalid, 94373 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2203 mSolverCounterUnsat, 1979363 mSDtfsCounter, 92170 mSolverCounterSat, 7.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 902764 GetRequests, 901307 SyntacticMatches, 0 SemanticMatches, 1456 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68406 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15712occurred in iteration=139, InterpolantAutomatonStates: 691, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.5s AutomataMinimizationTime, 139 MinimizatonAttempts, 1010257 StatesRemovedByMinimization, 138 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 119.3s SsaConstructionTime, 265.3s SatisfiabilityAnalysisTime, 160.0s InterpolantComputationTime, 506369 NumberOfCodeBlocks, 506369 NumberOfCodeBlocksAsserted, 140 NumberOfCheckSat, 932964 ConstructedInterpolants, 0 QuantifiedInterpolants, 1329396 SizeOfPredicates, 452 NumberOfNonLiveVariables, 2091425 ConjunctsInSsa, 1615 ConjunctsInUnsatCore, 227 InterpolantComputations, 138 PerfectInterpolantSequences, 66896/101004 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown