./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4c7460e797ab98c965c0146dc16cfd1742d13d580f8dc4b4e90e3d1aa36d777a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 06:50:55,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 06:50:55,470 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-11 06:50:55,474 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 06:50:55,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 06:50:55,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 06:50:55,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 06:50:55,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 06:50:55,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 06:50:55,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 06:50:55,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 06:50:55,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 06:50:55,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 06:50:55,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 06:50:55,502 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 06:50:55,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 06:50:55,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 06:50:55,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 06:50:55,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 06:50:55,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 06:50:55,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 06:50:55,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 06:50:55,505 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 06:50:55,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 06:50:55,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 06:50:55,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 06:50:55,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 06:50:55,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 06:50:55,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 06:50:55,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:50:55,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 06:50:55,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 06:50:55,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 06:50:55,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 06:50:55,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 06:50:55,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 06:50:55,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 06:50:55,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 06:50:55,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 06:50:55,511 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c7460e797ab98c965c0146dc16cfd1742d13d580f8dc4b4e90e3d1aa36d777a [2024-10-11 06:50:55,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 06:50:55,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 06:50:55,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 06:50:55,780 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 06:50:55,781 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 06:50:55,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2024-10-11 06:50:57,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 06:50:57,428 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 06:50:57,429 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2024-10-11 06:50:57,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c93aadd61/8242cc7a5f4f411fa7f5678a01170d6a/FLAGf18c27f97 [2024-10-11 06:50:57,463 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c93aadd61/8242cc7a5f4f411fa7f5678a01170d6a [2024-10-11 06:50:57,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 06:50:57,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 06:50:57,469 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 06:50:57,469 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 06:50:57,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 06:50:57,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:57,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618180a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57, skipping insertion in model container [2024-10-11 06:50:57,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:57,514 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 06:50:57,706 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2024-10-11 06:50:57,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:50:57,841 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 06:50:57,866 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2024-10-11 06:50:57,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:50:57,958 INFO L204 MainTranslator]: Completed translation [2024-10-11 06:50:57,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57 WrapperNode [2024-10-11 06:50:57,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 06:50:57,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 06:50:57,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 06:50:57,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 06:50:57,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:57,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,077 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 651 [2024-10-11 06:50:58,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 06:50:58,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 06:50:58,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 06:50:58,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 06:50:58,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,116 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,164 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]. [2024-10-11 06:50:58,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 06:50:58,241 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 06:50:58,241 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 06:50:58,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 06:50:58,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (1/1) ... [2024-10-11 06:50:58,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:50:58,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:50:58,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 06:50:58,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 06:50:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 06:50:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 06:50:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 06:50:58,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 06:50:58,463 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 06:50:58,466 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 06:50:59,403 INFO L? ?]: Removed 394 outVars from TransFormulas that were not future-live. [2024-10-11 06:50:59,403 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 06:50:59,436 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 06:50:59,438 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 06:50:59,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:50:59 BoogieIcfgContainer [2024-10-11 06:50:59,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 06:50:59,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 06:50:59,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 06:50:59,446 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 06:50:59,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:50:57" (1/3) ... [2024-10-11 06:50:59,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31317baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:50:59, skipping insertion in model container [2024-10-11 06:50:59,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:50:57" (2/3) ... [2024-10-11 06:50:59,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31317baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:50:59, skipping insertion in model container [2024-10-11 06:50:59,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:50:59" (3/3) ... [2024-10-11 06:50:59,449 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_1.c [2024-10-11 06:50:59,465 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 06:50:59,465 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 06:50:59,535 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 06:50:59,541 INFO L333 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, 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;@69d5da49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 06:50:59,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 06:50:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 189 states have (on average 1.5026455026455026) internal successors, (284), 190 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:50:59,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 06:50:59,556 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:50:59,557 INFO L215 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] [2024-10-11 06:50:59,557 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:50:59,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:50:59,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1719908969, now seen corresponding path program 1 times [2024-10-11 06:50:59,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:50:59,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121705253] [2024-10-11 06:50:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:50:59,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:50:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121705253] [2024-10-11 06:51:00,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121705253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:00,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:00,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:00,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918801024] [2024-10-11 06:51:00,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:00,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:51:00,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:00,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:51:00,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:51:00,148 INFO L87 Difference]: Start difference. First operand has 191 states, 189 states have (on average 1.5026455026455026) internal successors, (284), 190 states have internal predecessors, (284), 0 states have call successors, (0), 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 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:00,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:00,233 INFO L93 Difference]: Finished difference Result 346 states and 516 transitions. [2024-10-11 06:51:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:51:00,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-10-11 06:51:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:00,247 INFO L225 Difference]: With dead ends: 346 [2024-10-11 06:51:00,247 INFO L226 Difference]: Without dead ends: 192 [2024-10-11 06:51:00,251 INFO L431 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 [2024-10-11 06:51:00,255 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 0 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:00,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 832 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:00,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-11 06:51:00,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-10-11 06:51:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.486910994764398) internal successors, (284), 191 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 284 transitions. [2024-10-11 06:51:00,295 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 284 transitions. Word has length 26 [2024-10-11 06:51:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:00,295 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 284 transitions. [2024-10-11 06:51:00,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 284 transitions. [2024-10-11 06:51:00,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 06:51:00,297 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:00,297 INFO L215 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] [2024-10-11 06:51:00,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 06:51:00,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:00,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1779265783, now seen corresponding path program 1 times [2024-10-11 06:51:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:00,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120128533] [2024-10-11 06:51:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:00,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:00,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:00,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120128533] [2024-10-11 06:51:00,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120128533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:00,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:00,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:00,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467498621] [2024-10-11 06:51:00,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:00,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:51:00,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:51:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:51:00,438 INFO L87 Difference]: Start difference. First operand 192 states and 284 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:00,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:00,494 INFO L93 Difference]: Finished difference Result 349 states and 516 transitions. [2024-10-11 06:51:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:51:00,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-10-11 06:51:00,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:00,498 INFO L225 Difference]: With dead ends: 349 [2024-10-11 06:51:00,498 INFO L226 Difference]: Without dead ends: 194 [2024-10-11 06:51:00,499 INFO L431 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 [2024-10-11 06:51:00,500 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 0 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:00,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 829 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:00,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-10-11 06:51:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-10-11 06:51:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4818652849740932) internal successors, (286), 193 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 286 transitions. [2024-10-11 06:51:00,514 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 286 transitions. Word has length 27 [2024-10-11 06:51:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:00,515 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 286 transitions. [2024-10-11 06:51:00,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 286 transitions. [2024-10-11 06:51:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 06:51:00,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:00,516 INFO L215 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] [2024-10-11 06:51:00,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 06:51:00,517 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:00,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:00,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1775301374, now seen corresponding path program 1 times [2024-10-11 06:51:00,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:00,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002544612] [2024-10-11 06:51:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:00,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:00,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002544612] [2024-10-11 06:51:00,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002544612] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:00,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:00,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:00,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594583742] [2024-10-11 06:51:00,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:00,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:00,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:00,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:00,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:00,753 INFO L87 Difference]: Start difference. First operand 194 states and 286 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:00,846 INFO L93 Difference]: Finished difference Result 482 states and 711 transitions. [2024-10-11 06:51:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:00,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-10-11 06:51:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:00,849 INFO L225 Difference]: With dead ends: 482 [2024-10-11 06:51:00,850 INFO L226 Difference]: Without dead ends: 325 [2024-10-11 06:51:00,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:00,853 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 649 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:00,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 808 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:00,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-10-11 06:51:00,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 196. [2024-10-11 06:51:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.476923076923077) internal successors, (288), 195 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2024-10-11 06:51:00,873 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 28 [2024-10-11 06:51:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:00,874 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2024-10-11 06:51:00,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:00,874 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2024-10-11 06:51:00,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-11 06:51:00,879 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:00,879 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 06:51:00,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 06:51:00,880 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:00,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1423892387, now seen corresponding path program 1 times [2024-10-11 06:51:00,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:00,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871905553] [2024-10-11 06:51:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:01,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:01,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871905553] [2024-10-11 06:51:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871905553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:01,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:01,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:01,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141615632] [2024-10-11 06:51:01,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:01,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:01,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:01,833 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:01,932 INFO L93 Difference]: Finished difference Result 474 states and 698 transitions. [2024-10-11 06:51:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:01,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2024-10-11 06:51:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:01,934 INFO L225 Difference]: With dead ends: 474 [2024-10-11 06:51:01,934 INFO L226 Difference]: Without dead ends: 317 [2024-10-11 06:51:01,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:01,938 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 597 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:01,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 800 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-10-11 06:51:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 243. [2024-10-11 06:51:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4669421487603307) internal successors, (355), 242 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:01,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 355 transitions. [2024-10-11 06:51:01,957 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 355 transitions. Word has length 105 [2024-10-11 06:51:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:01,958 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 355 transitions. [2024-10-11 06:51:01,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 355 transitions. [2024-10-11 06:51:01,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-11 06:51:01,962 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:01,962 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 06:51:01,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 06:51:01,964 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:01,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1461028602, now seen corresponding path program 1 times [2024-10-11 06:51:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:01,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399293765] [2024-10-11 06:51:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:03,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:03,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399293765] [2024-10-11 06:51:03,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399293765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:03,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:03,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 06:51:03,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775838712] [2024-10-11 06:51:03,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:03,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 06:51:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 06:51:03,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:51:03,185 INFO L87 Difference]: Start difference. First operand 243 states and 355 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:03,403 INFO L93 Difference]: Finished difference Result 923 states and 1349 transitions. [2024-10-11 06:51:03,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 06:51:03,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2024-10-11 06:51:03,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:03,407 INFO L225 Difference]: With dead ends: 923 [2024-10-11 06:51:03,407 INFO L226 Difference]: Without dead ends: 743 [2024-10-11 06:51:03,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:03,411 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 1116 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:03,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 2783 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-10-11 06:51:03,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 275. [2024-10-11 06:51:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.4525547445255473) internal successors, (398), 274 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:03,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 398 transitions. [2024-10-11 06:51:03,425 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 398 transitions. Word has length 107 [2024-10-11 06:51:03,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:03,425 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 398 transitions. [2024-10-11 06:51:03,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:03,426 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 398 transitions. [2024-10-11 06:51:03,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-11 06:51:03,428 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:03,429 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 06:51:03,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 06:51:03,430 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:03,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash 365866267, now seen corresponding path program 1 times [2024-10-11 06:51:03,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:03,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277579380] [2024-10-11 06:51:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:03,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:04,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:04,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277579380] [2024-10-11 06:51:04,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277579380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:04,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:04,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762560832] [2024-10-11 06:51:04,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:04,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:04,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:04,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:04,068 INFO L87 Difference]: Start difference. First operand 275 states and 398 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:04,140 INFO L93 Difference]: Finished difference Result 529 states and 772 transitions. [2024-10-11 06:51:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:04,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-10-11 06:51:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:04,142 INFO L225 Difference]: With dead ends: 529 [2024-10-11 06:51:04,142 INFO L226 Difference]: Without dead ends: 349 [2024-10-11 06:51:04,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:04,144 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 604 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:04,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 806 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-10-11 06:51:04,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 243. [2024-10-11 06:51:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4586776859504131) internal successors, (353), 242 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 353 transitions. [2024-10-11 06:51:04,151 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 353 transitions. Word has length 108 [2024-10-11 06:51:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:04,152 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 353 transitions. [2024-10-11 06:51:04,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 353 transitions. [2024-10-11 06:51:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-11 06:51:04,153 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:04,153 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 06:51:04,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 06:51:04,154 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:04,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:04,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1370964969, now seen corresponding path program 1 times [2024-10-11 06:51:04,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:04,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053621913] [2024-10-11 06:51:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:04,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:04,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:04,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053621913] [2024-10-11 06:51:04,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053621913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:04,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:04,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:04,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363724606] [2024-10-11 06:51:04,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:04,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:04,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:04,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:04,906 INFO L87 Difference]: Start difference. First operand 243 states and 353 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:04,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:04,999 INFO L93 Difference]: Finished difference Result 477 states and 699 transitions. [2024-10-11 06:51:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:05,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2024-10-11 06:51:05,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:05,004 INFO L225 Difference]: With dead ends: 477 [2024-10-11 06:51:05,004 INFO L226 Difference]: Without dead ends: 320 [2024-10-11 06:51:05,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:05,007 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 555 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:05,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 795 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:05,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-10-11 06:51:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2024-10-11 06:51:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.4637223974763407) internal successors, (464), 317 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 464 transitions. [2024-10-11 06:51:05,019 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 464 transitions. Word has length 109 [2024-10-11 06:51:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:05,020 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 464 transitions. [2024-10-11 06:51:05,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 464 transitions. [2024-10-11 06:51:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-11 06:51:05,022 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:05,022 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 06:51:05,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 06:51:05,023 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:05,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:05,023 INFO L85 PathProgramCache]: Analyzing trace with hash -737854373, now seen corresponding path program 1 times [2024-10-11 06:51:05,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:05,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759760664] [2024-10-11 06:51:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:05,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:05,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:05,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759760664] [2024-10-11 06:51:05,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759760664] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:05,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:05,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:05,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324511323] [2024-10-11 06:51:05,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:05,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:05,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:05,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:05,675 INFO L87 Difference]: Start difference. First operand 318 states and 464 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:05,763 INFO L93 Difference]: Finished difference Result 513 states and 751 transitions. [2024-10-11 06:51:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:05,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-10-11 06:51:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:05,765 INFO L225 Difference]: With dead ends: 513 [2024-10-11 06:51:05,765 INFO L226 Difference]: Without dead ends: 318 [2024-10-11 06:51:05,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:05,766 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 569 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:05,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 799 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-10-11 06:51:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2024-10-11 06:51:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.4605678233438486) internal successors, (463), 317 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 463 transitions. [2024-10-11 06:51:05,775 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 463 transitions. Word has length 110 [2024-10-11 06:51:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:05,776 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 463 transitions. [2024-10-11 06:51:05,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 463 transitions. [2024-10-11 06:51:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-11 06:51:05,777 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:05,777 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 06:51:05,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 06:51:05,777 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:05,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:05,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2099488209, now seen corresponding path program 1 times [2024-10-11 06:51:05,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:05,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25003055] [2024-10-11 06:51:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:05,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:06,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:06,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25003055] [2024-10-11 06:51:06,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25003055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:06,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:06,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:06,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669758211] [2024-10-11 06:51:06,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:06,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:06,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:06,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:06,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:06,502 INFO L87 Difference]: Start difference. First operand 318 states and 463 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:06,626 INFO L93 Difference]: Finished difference Result 482 states and 704 transitions. [2024-10-11 06:51:06,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:06,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2024-10-11 06:51:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:06,628 INFO L225 Difference]: With dead ends: 482 [2024-10-11 06:51:06,628 INFO L226 Difference]: Without dead ends: 325 [2024-10-11 06:51:06,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:06,629 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 561 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:06,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1128 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-10-11 06:51:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2024-10-11 06:51:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.459375) internal successors, (467), 320 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 467 transitions. [2024-10-11 06:51:06,642 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 467 transitions. Word has length 111 [2024-10-11 06:51:06,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:06,642 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 467 transitions. [2024-10-11 06:51:06,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 467 transitions. [2024-10-11 06:51:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-11 06:51:06,644 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:06,644 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:06,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 06:51:06,645 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:06,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:06,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2081333828, now seen corresponding path program 1 times [2024-10-11 06:51:06,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:06,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174540598] [2024-10-11 06:51:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:06,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:07,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:07,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174540598] [2024-10-11 06:51:07,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174540598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:07,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:07,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:07,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775046563] [2024-10-11 06:51:07,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:07,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:07,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:07,337 INFO L87 Difference]: Start difference. First operand 321 states and 467 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:07,435 INFO L93 Difference]: Finished difference Result 499 states and 728 transitions. [2024-10-11 06:51:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:07,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-10-11 06:51:07,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:07,439 INFO L225 Difference]: With dead ends: 499 [2024-10-11 06:51:07,439 INFO L226 Difference]: Without dead ends: 321 [2024-10-11 06:51:07,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:07,440 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 556 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:07,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 799 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-10-11 06:51:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2024-10-11 06:51:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.45625) internal successors, (466), 320 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 466 transitions. [2024-10-11 06:51:07,449 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 466 transitions. Word has length 112 [2024-10-11 06:51:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:07,449 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 466 transitions. [2024-10-11 06:51:07,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:07,450 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 466 transitions. [2024-10-11 06:51:07,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-11 06:51:07,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:07,451 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:07,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 06:51:07,451 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:07,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:07,452 INFO L85 PathProgramCache]: Analyzing trace with hash 843855443, now seen corresponding path program 1 times [2024-10-11 06:51:07,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:07,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720908485] [2024-10-11 06:51:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:07,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:08,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:08,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720908485] [2024-10-11 06:51:08,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720908485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:08,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:08,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:08,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845787200] [2024-10-11 06:51:08,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:08,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:08,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:08,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:08,080 INFO L87 Difference]: Start difference. First operand 321 states and 466 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:08,209 INFO L93 Difference]: Finished difference Result 488 states and 711 transitions. [2024-10-11 06:51:08,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:08,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2024-10-11 06:51:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:08,212 INFO L225 Difference]: With dead ends: 488 [2024-10-11 06:51:08,212 INFO L226 Difference]: Without dead ends: 331 [2024-10-11 06:51:08,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:08,213 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 566 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:08,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1319 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-10-11 06:51:08,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-10-11 06:51:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.4539877300613497) internal successors, (474), 326 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 474 transitions. [2024-10-11 06:51:08,221 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 474 transitions. Word has length 113 [2024-10-11 06:51:08,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:08,222 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 474 transitions. [2024-10-11 06:51:08,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,222 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 474 transitions. [2024-10-11 06:51:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-11 06:51:08,223 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:08,223 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:08,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 06:51:08,223 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:08,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1683445777, now seen corresponding path program 1 times [2024-10-11 06:51:08,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:08,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524515517] [2024-10-11 06:51:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:08,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:08,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:08,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524515517] [2024-10-11 06:51:08,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524515517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:08,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:08,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:08,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687528518] [2024-10-11 06:51:08,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:08,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:08,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:08,854 INFO L87 Difference]: Start difference. First operand 327 states and 474 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:08,980 INFO L93 Difference]: Finished difference Result 511 states and 743 transitions. [2024-10-11 06:51:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:08,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2024-10-11 06:51:08,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:08,982 INFO L225 Difference]: With dead ends: 511 [2024-10-11 06:51:08,982 INFO L226 Difference]: Without dead ends: 331 [2024-10-11 06:51:08,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:08,983 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 574 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:08,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1122 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:08,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-10-11 06:51:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2024-10-11 06:51:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.451219512195122) internal successors, (476), 328 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 476 transitions. [2024-10-11 06:51:08,992 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 476 transitions. Word has length 113 [2024-10-11 06:51:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:08,992 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 476 transitions. [2024-10-11 06:51:08,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 476 transitions. [2024-10-11 06:51:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-11 06:51:08,993 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:08,994 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:08,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 06:51:08,994 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:08,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash 842012219, now seen corresponding path program 1 times [2024-10-11 06:51:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:08,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572014433] [2024-10-11 06:51:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:08,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:09,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572014433] [2024-10-11 06:51:09,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572014433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:09,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:09,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:51:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571238560] [2024-10-11 06:51:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:09,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:51:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:51:09,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:51:09,699 INFO L87 Difference]: Start difference. First operand 329 states and 476 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:09,798 INFO L93 Difference]: Finished difference Result 535 states and 776 transitions. [2024-10-11 06:51:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:09,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2024-10-11 06:51:09,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:09,800 INFO L225 Difference]: With dead ends: 535 [2024-10-11 06:51:09,800 INFO L226 Difference]: Without dead ends: 329 [2024-10-11 06:51:09,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:51:09,803 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 565 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:09,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1064 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-10-11 06:51:09,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2024-10-11 06:51:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.4481707317073171) internal successors, (475), 328 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 475 transitions. [2024-10-11 06:51:09,811 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 475 transitions. Word has length 114 [2024-10-11 06:51:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:09,811 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 475 transitions. [2024-10-11 06:51:09,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 475 transitions. [2024-10-11 06:51:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-11 06:51:09,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:09,813 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:09,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 06:51:09,813 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:09,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:09,814 INFO L85 PathProgramCache]: Analyzing trace with hash 297693586, now seen corresponding path program 1 times [2024-10-11 06:51:09,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:09,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231943862] [2024-10-11 06:51:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:09,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:10,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:10,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231943862] [2024-10-11 06:51:10,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231943862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:10,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661926286] [2024-10-11 06:51:10,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:10,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:10,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:10,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:10,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 06:51:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:11,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-10-11 06:51:11,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:12,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:51:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:13,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661926286] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:51:13,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:51:13,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 32 [2024-10-11 06:51:13,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494965071] [2024-10-11 06:51:13,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:51:13,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 06:51:13,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 06:51:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=909, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 06:51:13,688 INFO L87 Difference]: Start difference. First operand 329 states and 475 transitions. Second operand has 33 states, 33 states have (on average 10.151515151515152) internal successors, (335), 32 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:15,030 INFO L93 Difference]: Finished difference Result 883 states and 1277 transitions. [2024-10-11 06:51:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 06:51:15,031 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 10.151515151515152) internal successors, (335), 32 states have internal predecessors, (335), 0 states have call successors, (0), 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 115 [2024-10-11 06:51:15,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:15,034 INFO L225 Difference]: With dead ends: 883 [2024-10-11 06:51:15,034 INFO L226 Difference]: Without dead ends: 603 [2024-10-11 06:51:15,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=416, Invalid=2236, Unknown=0, NotChecked=0, Total=2652 [2024-10-11 06:51:15,036 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 1681 mSDsluCounter, 3838 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:15,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 4053 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 06:51:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-10-11 06:51:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 474. [2024-10-11 06:51:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.4334038054968288) internal successors, (678), 473 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 678 transitions. [2024-10-11 06:51:15,047 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 678 transitions. Word has length 115 [2024-10-11 06:51:15,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:15,047 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 678 transitions. [2024-10-11 06:51:15,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.151515151515152) internal successors, (335), 32 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 678 transitions. [2024-10-11 06:51:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-11 06:51:15,049 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:15,049 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:15,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 06:51:15,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 06:51:15,254 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:15,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:15,255 INFO L85 PathProgramCache]: Analyzing trace with hash -51111131, now seen corresponding path program 1 times [2024-10-11 06:51:15,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:15,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350508036] [2024-10-11 06:51:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:15,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:15,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350508036] [2024-10-11 06:51:15,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350508036] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:15,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:15,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:51:15,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146386600] [2024-10-11 06:51:15,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:15,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:51:15,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:15,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:51:15,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:51:15,597 INFO L87 Difference]: Start difference. First operand 474 states and 678 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:15,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:15,658 INFO L93 Difference]: Finished difference Result 631 states and 909 transitions. [2024-10-11 06:51:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:15,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-10-11 06:51:15,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:15,660 INFO L225 Difference]: With dead ends: 631 [2024-10-11 06:51:15,660 INFO L226 Difference]: Without dead ends: 347 [2024-10-11 06:51:15,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:51:15,661 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 599 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:15,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 805 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-10-11 06:51:15,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2024-10-11 06:51:15,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.4364161849710984) internal successors, (497), 346 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 497 transitions. [2024-10-11 06:51:15,672 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 497 transitions. Word has length 116 [2024-10-11 06:51:15,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:15,673 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 497 transitions. [2024-10-11 06:51:15,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 497 transitions. [2024-10-11 06:51:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-11 06:51:15,675 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:15,675 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:15,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 06:51:15,676 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:15,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash -430971629, now seen corresponding path program 1 times [2024-10-11 06:51:15,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:15,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641489624] [2024-10-11 06:51:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:15,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 43 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:19,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:19,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641489624] [2024-10-11 06:51:19,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641489624] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:19,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065717671] [2024-10-11 06:51:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:19,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:19,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:19,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:19,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 06:51:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:20,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-10-11 06:51:20,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 43 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:21,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:51:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 43 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:22,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065717671] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:51:22,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:51:22,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 35 [2024-10-11 06:51:22,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526836609] [2024-10-11 06:51:22,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:51:22,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-11 06:51:22,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:22,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-11 06:51:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 06:51:22,731 INFO L87 Difference]: Start difference. First operand 347 states and 497 transitions. Second operand has 36 states, 36 states have (on average 14.777777777777779) internal successors, (532), 35 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:27,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:27,824 INFO L93 Difference]: Finished difference Result 2783 states and 4017 transitions. [2024-10-11 06:51:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-10-11 06:51:27,825 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 14.777777777777779) internal successors, (532), 35 states have internal predecessors, (532), 0 states have call successors, (0), 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 192 [2024-10-11 06:51:27,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:27,834 INFO L225 Difference]: With dead ends: 2783 [2024-10-11 06:51:27,834 INFO L226 Difference]: Without dead ends: 2626 [2024-10-11 06:51:27,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 362 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5969 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2585, Invalid=16321, Unknown=0, NotChecked=0, Total=18906 [2024-10-11 06:51:27,842 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 15122 mSDsluCounter, 8011 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15122 SdHoareTripleChecker+Valid, 8361 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:27,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15122 Valid, 8361 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-11 06:51:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2024-10-11 06:51:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1424. [2024-10-11 06:51:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 1.4244553759662684) internal successors, (2027), 1423 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2027 transitions. [2024-10-11 06:51:27,885 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2027 transitions. Word has length 192 [2024-10-11 06:51:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:27,885 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 2027 transitions. [2024-10-11 06:51:27,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 14.777777777777779) internal successors, (532), 35 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2027 transitions. [2024-10-11 06:51:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-11 06:51:27,889 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:27,889 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:27,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 06:51:28,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 06:51:28,090 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:28,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:28,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1440128939, now seen corresponding path program 1 times [2024-10-11 06:51:28,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:28,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983115642] [2024-10-11 06:51:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 33 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:31,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:31,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983115642] [2024-10-11 06:51:31,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983115642] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:31,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849197740] [2024-10-11 06:51:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:31,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:31,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:31,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:31,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 06:51:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:31,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-11 06:51:31,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:32,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:51:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:33,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849197740] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:51:33,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:51:33,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 25 [2024-10-11 06:51:33,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666076621] [2024-10-11 06:51:33,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:51:33,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 06:51:33,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:33,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 06:51:33,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2024-10-11 06:51:33,895 INFO L87 Difference]: Start difference. First operand 1424 states and 2027 transitions. Second operand has 26 states, 26 states have (on average 21.346153846153847) internal successors, (555), 25 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:34,982 INFO L93 Difference]: Finished difference Result 2448 states and 3534 transitions. [2024-10-11 06:51:34,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 06:51:34,984 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 21.346153846153847) internal successors, (555), 25 states have internal predecessors, (555), 0 states have call successors, (0), 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 193 [2024-10-11 06:51:34,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:34,991 INFO L225 Difference]: With dead ends: 2448 [2024-10-11 06:51:34,991 INFO L226 Difference]: Without dead ends: 1952 [2024-10-11 06:51:34,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 370 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=381, Invalid=1971, Unknown=0, NotChecked=0, Total=2352 [2024-10-11 06:51:34,994 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 3723 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3723 SdHoareTripleChecker+Valid, 4350 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:34,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3723 Valid, 4350 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 06:51:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2024-10-11 06:51:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1759. [2024-10-11 06:51:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1758 states have (on average 1.4226393629124006) internal successors, (2501), 1758 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2501 transitions. [2024-10-11 06:51:35,052 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2501 transitions. Word has length 193 [2024-10-11 06:51:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:35,053 INFO L471 AbstractCegarLoop]: Abstraction has 1759 states and 2501 transitions. [2024-10-11 06:51:35,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 21.346153846153847) internal successors, (555), 25 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2501 transitions. [2024-10-11 06:51:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-10-11 06:51:35,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:35,056 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:35,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 06:51:35,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:35,257 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:35,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:35,258 INFO L85 PathProgramCache]: Analyzing trace with hash 129198414, now seen corresponding path program 1 times [2024-10-11 06:51:35,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:35,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521722494] [2024-10-11 06:51:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:35,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 06:51:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521722494] [2024-10-11 06:51:37,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521722494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:37,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:37,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:51:37,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107290270] [2024-10-11 06:51:37,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:37,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:37,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:37,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:37,266 INFO L87 Difference]: Start difference. First operand 1759 states and 2501 transitions. Second operand has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:37,376 INFO L93 Difference]: Finished difference Result 2990 states and 4307 transitions. [2024-10-11 06:51:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:37,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 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 195 [2024-10-11 06:51:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:37,384 INFO L225 Difference]: With dead ends: 2990 [2024-10-11 06:51:37,385 INFO L226 Difference]: Without dead ends: 2503 [2024-10-11 06:51:37,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:51:37,386 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 134 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:37,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1361 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:37,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2024-10-11 06:51:37,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2409. [2024-10-11 06:51:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 1.433970099667774) internal successors, (3453), 2408 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3453 transitions. [2024-10-11 06:51:37,431 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3453 transitions. Word has length 195 [2024-10-11 06:51:37,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:37,432 INFO L471 AbstractCegarLoop]: Abstraction has 2409 states and 3453 transitions. [2024-10-11 06:51:37,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3453 transitions. [2024-10-11 06:51:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-10-11 06:51:37,436 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:37,436 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:37,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 06:51:37,437 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:37,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:37,438 INFO L85 PathProgramCache]: Analyzing trace with hash 961892205, now seen corresponding path program 1 times [2024-10-11 06:51:37,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:37,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47463883] [2024-10-11 06:51:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-11 06:51:38,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:38,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47463883] [2024-10-11 06:51:38,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47463883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:38,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:38,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 06:51:38,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722964594] [2024-10-11 06:51:38,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:38,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 06:51:38,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 06:51:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:51:38,723 INFO L87 Difference]: Start difference. First operand 2409 states and 3453 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:38,843 INFO L93 Difference]: Finished difference Result 6464 states and 9296 transitions. [2024-10-11 06:51:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:38,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 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 195 [2024-10-11 06:51:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:38,860 INFO L225 Difference]: With dead ends: 6464 [2024-10-11 06:51:38,861 INFO L226 Difference]: Without dead ends: 5208 [2024-10-11 06:51:38,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:51:38,865 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 667 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:38,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1816 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2024-10-11 06:51:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 2441. [2024-10-11 06:51:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2441 states, 2440 states have (on average 1.4295081967213115) internal successors, (3488), 2440 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 3488 transitions. [2024-10-11 06:51:38,925 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 3488 transitions. Word has length 195 [2024-10-11 06:51:38,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:38,925 INFO L471 AbstractCegarLoop]: Abstraction has 2441 states and 3488 transitions. [2024-10-11 06:51:38,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 3488 transitions. [2024-10-11 06:51:38,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-11 06:51:38,930 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:38,930 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:38,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 06:51:38,930 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:38,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash -381652430, now seen corresponding path program 1 times [2024-10-11 06:51:38,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:38,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139232285] [2024-10-11 06:51:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:38,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 06:51:40,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:40,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139232285] [2024-10-11 06:51:40,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139232285] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:40,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813234595] [2024-10-11 06:51:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:40,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:40,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:40,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:40,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 06:51:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:41,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-10-11 06:51:41,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:42,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:51:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-11 06:51:42,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813234595] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:42,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 06:51:42,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11, 12] total 29 [2024-10-11 06:51:42,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129492165] [2024-10-11 06:51:42,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:42,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 06:51:42,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:42,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 06:51:42,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2024-10-11 06:51:42,492 INFO L87 Difference]: Start difference. First operand 2441 states and 3488 transitions. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:42,689 INFO L93 Difference]: Finished difference Result 3461 states and 4975 transitions. [2024-10-11 06:51:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 06:51:42,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 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 196 [2024-10-11 06:51:42,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:42,699 INFO L225 Difference]: With dead ends: 3461 [2024-10-11 06:51:42,700 INFO L226 Difference]: Without dead ends: 2639 [2024-10-11 06:51:42,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2024-10-11 06:51:42,703 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 65 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:42,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1873 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 06:51:42,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2024-10-11 06:51:42,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2511. [2024-10-11 06:51:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2510 states have (on average 1.4302788844621515) internal successors, (3590), 2510 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3590 transitions. [2024-10-11 06:51:42,750 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3590 transitions. Word has length 196 [2024-10-11 06:51:42,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:42,750 INFO L471 AbstractCegarLoop]: Abstraction has 2511 states and 3590 transitions. [2024-10-11 06:51:42,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:42,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3590 transitions. [2024-10-11 06:51:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-11 06:51:42,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:42,757 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:42,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 06:51:42,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:42,962 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:42,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1375999995, now seen corresponding path program 1 times [2024-10-11 06:51:42,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:42,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459006795] [2024-10-11 06:51:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:42,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:45,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:45,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459006795] [2024-10-11 06:51:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459006795] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:45,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28111824] [2024-10-11 06:51:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:45,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:45,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:45,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:45,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 06:51:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:45,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-11 06:51:45,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:46,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:51:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:48,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28111824] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:51:48,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:51:48,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 15] total 35 [2024-10-11 06:51:48,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500735758] [2024-10-11 06:51:48,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:51:48,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-11 06:51:48,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:48,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-11 06:51:48,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 06:51:48,157 INFO L87 Difference]: Start difference. First operand 2511 states and 3590 transitions. Second operand has 36 states, 36 states have (on average 15.11111111111111) internal successors, (544), 35 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:50,241 INFO L93 Difference]: Finished difference Result 4297 states and 6209 transitions. [2024-10-11 06:51:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-11 06:51:50,241 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 15.11111111111111) internal successors, (544), 35 states have internal predecessors, (544), 0 states have call successors, (0), 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 196 [2024-10-11 06:51:50,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:50,252 INFO L225 Difference]: With dead ends: 4297 [2024-10-11 06:51:50,252 INFO L226 Difference]: Without dead ends: 3405 [2024-10-11 06:51:50,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=994, Invalid=4262, Unknown=0, NotChecked=0, Total=5256 [2024-10-11 06:51:50,257 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 2853 mSDsluCounter, 6951 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2853 SdHoareTripleChecker+Valid, 7450 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:50,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2853 Valid, 7450 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-11 06:51:50,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2024-10-11 06:51:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 2514. [2024-10-11 06:51:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 2513 states have (on average 1.429367290091524) internal successors, (3592), 2513 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3592 transitions. [2024-10-11 06:51:50,305 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3592 transitions. Word has length 196 [2024-10-11 06:51:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:50,305 INFO L471 AbstractCegarLoop]: Abstraction has 2514 states and 3592 transitions. [2024-10-11 06:51:50,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 15.11111111111111) internal successors, (544), 35 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3592 transitions. [2024-10-11 06:51:50,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-11 06:51:50,310 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:50,310 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:50,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 06:51:50,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:50,515 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:50,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash -874468222, now seen corresponding path program 1 times [2024-10-11 06:51:50,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:50,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189574039] [2024-10-11 06:51:50,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:50,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 44 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 06:51:52,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:52,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189574039] [2024-10-11 06:51:52,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189574039] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:52,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036121661] [2024-10-11 06:51:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:52,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:52,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:52,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:52,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 06:51:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:52,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-11 06:51:52,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 06:51:52,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 06:51:52,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036121661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:52,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 06:51:52,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2024-10-11 06:51:52,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536291378] [2024-10-11 06:51:52,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:52,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 06:51:52,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:52,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 06:51:52,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-10-11 06:51:52,963 INFO L87 Difference]: Start difference. First operand 2514 states and 3592 transitions. Second operand has 9 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:53,145 INFO L93 Difference]: Finished difference Result 5428 states and 7833 transitions. [2024-10-11 06:51:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 06:51:53,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 0 states have call successors, (0), 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 196 [2024-10-11 06:51:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:53,160 INFO L225 Difference]: With dead ends: 5428 [2024-10-11 06:51:53,160 INFO L226 Difference]: Without dead ends: 4294 [2024-10-11 06:51:53,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2024-10-11 06:51:53,164 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 347 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:53,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 2610 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2024-10-11 06:51:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 2850. [2024-10-11 06:51:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2849 states have (on average 1.42997542997543) internal successors, (4074), 2849 states have internal predecessors, (4074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 4074 transitions. [2024-10-11 06:51:53,230 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 4074 transitions. Word has length 196 [2024-10-11 06:51:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:53,230 INFO L471 AbstractCegarLoop]: Abstraction has 2850 states and 4074 transitions. [2024-10-11 06:51:53,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 4074 transitions. [2024-10-11 06:51:53,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-11 06:51:53,235 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:53,235 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:53,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 06:51:53,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-11 06:51:53,436 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:53,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:53,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1487398563, now seen corresponding path program 1 times [2024-10-11 06:51:53,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:53,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510190479] [2024-10-11 06:51:53,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:53,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 70 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510190479] [2024-10-11 06:51:54,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510190479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025000184] [2024-10-11 06:51:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:54,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:54,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:54,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:54,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 06:51:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:55,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-11 06:51:55,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 70 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:56,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:51:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 62 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:57,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025000184] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:51:57,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:51:57,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 12] total 29 [2024-10-11 06:51:57,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123277925] [2024-10-11 06:51:57,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:51:57,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-11 06:51:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-11 06:51:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2024-10-11 06:51:57,284 INFO L87 Difference]: Start difference. First operand 2850 states and 4074 transitions. Second operand has 30 states, 30 states have (on average 17.233333333333334) internal successors, (517), 29 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:58,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:58,517 INFO L93 Difference]: Finished difference Result 7011 states and 10117 transitions. [2024-10-11 06:51:58,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 06:51:58,518 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 17.233333333333334) internal successors, (517), 29 states have internal predecessors, (517), 0 states have call successors, (0), 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 196 [2024-10-11 06:51:58,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:58,531 INFO L225 Difference]: With dead ends: 7011 [2024-10-11 06:51:58,531 INFO L226 Difference]: Without dead ends: 5658 [2024-10-11 06:51:58,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=340, Invalid=2110, Unknown=0, NotChecked=0, Total=2450 [2024-10-11 06:51:58,536 INFO L432 NwaCegarLoop]: 822 mSDtfsCounter, 2645 mSDsluCounter, 11259 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2645 SdHoareTripleChecker+Valid, 12081 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:58,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2645 Valid, 12081 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 06:51:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2024-10-11 06:51:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 3607. [2024-10-11 06:51:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3607 states, 3606 states have (on average 1.4240155296727677) internal successors, (5135), 3606 states have internal predecessors, (5135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:58,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3607 states to 3607 states and 5135 transitions. [2024-10-11 06:51:58,619 INFO L78 Accepts]: Start accepts. Automaton has 3607 states and 5135 transitions. Word has length 196 [2024-10-11 06:51:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:58,619 INFO L471 AbstractCegarLoop]: Abstraction has 3607 states and 5135 transitions. [2024-10-11 06:51:58,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 17.233333333333334) internal successors, (517), 29 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3607 states and 5135 transitions. [2024-10-11 06:51:58,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-10-11 06:51:58,627 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:58,627 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:58,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 06:51:58,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:58,828 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:58,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash -368032231, now seen corresponding path program 1 times [2024-10-11 06:51:58,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:58,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524093167] [2024-10-11 06:51:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:52:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 06:52:00,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:52:00,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524093167] [2024-10-11 06:52:00,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524093167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:52:00,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264224290] [2024-10-11 06:52:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:52:00,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:52:00,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:52:00,043 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:52:00,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 06:52:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:52:00,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 06:52:00,715 INFO L278 TraceCheckSpWp]: Computing forward predicates...