./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/theatreSquare.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/loops-crafted-1/theatreSquare.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 01:58:15,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 01:58:15,465 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 01:58:15,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 01:58:15,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 01:58:15,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 01:58:15,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 01:58:15,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 01:58:15,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 01:58:15,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 01:58:15,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 01:58:15,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 01:58:15,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 01:58:15,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 01:58:15,503 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 01:58:15,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 01:58:15,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 01:58:15,507 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 01:58:15,507 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 01:58:15,507 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 01:58:15,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 01:58:15,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 01:58:15,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 01:58:15,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 01:58:15,510 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 01:58:15,510 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 01:58:15,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 01:58:15,511 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 01:58:15,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 01:58:15,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 01:58:15,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 01:58:15,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 01:58:15,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:58:15,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 01:58:15,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 01:58:15,512 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 01:58:15,512 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 01:58:15,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 01:58:15,512 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 01:58:15,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 01:58:15,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 01:58:15,514 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 01:58:15,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 [2024-10-11 01:58:15,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 01:58:15,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 01:58:15,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 01:58:15,769 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 01:58:15,770 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 01:58:15,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-10-11 01:58:17,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 01:58:17,205 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 01:58:17,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-10-11 01:58:17,215 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8c7486d61/2a2c10dfab1a40e9a108ee5928e354fb/FLAGaee4a5651 [2024-10-11 01:58:17,588 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8c7486d61/2a2c10dfab1a40e9a108ee5928e354fb [2024-10-11 01:58:17,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 01:58:17,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 01:58:17,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 01:58:17,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 01:58:17,598 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 01:58:17,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b36510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17, skipping insertion in model container [2024-10-11 01:58:17,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,616 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 01:58:17,843 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/loops-crafted-1/theatreSquare.c[370,383] [2024-10-11 01:58:17,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:58:17,871 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 01:58:17,878 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/loops-crafted-1/theatreSquare.c[370,383] [2024-10-11 01:58:17,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:58:17,899 INFO L204 MainTranslator]: Completed translation [2024-10-11 01:58:17,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17 WrapperNode [2024-10-11 01:58:17,900 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 01:58:17,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 01:58:17,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 01:58:17,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 01:58:17,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,927 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 103 [2024-10-11 01:58:17,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 01:58:17,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 01:58:17,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 01:58:17,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 01:58:17,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,948 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 01:58:17,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,962 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 01:58:17,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 01:58:17,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 01:58:17,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 01:58:17,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (1/1) ... [2024-10-11 01:58:17,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:58:17,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:18,001 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 01:58:18,008 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 01:58:18,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 01:58:18,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 01:58:18,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 01:58:18,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 01:58:18,108 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 01:58:18,109 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 01:58:18,273 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-10-11 01:58:18,273 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 01:58:18,301 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 01:58:18,301 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 01:58:18,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:58:18 BoogieIcfgContainer [2024-10-11 01:58:18,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 01:58:18,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 01:58:18,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 01:58:18,306 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 01:58:18,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:58:17" (1/3) ... [2024-10-11 01:58:18,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300060ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:58:18, skipping insertion in model container [2024-10-11 01:58:18,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:58:17" (2/3) ... [2024-10-11 01:58:18,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300060ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:58:18, skipping insertion in model container [2024-10-11 01:58:18,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:58:18" (3/3) ... [2024-10-11 01:58:18,309 INFO L112 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2024-10-11 01:58:18,322 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 01:58:18,322 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 01:58:18,365 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 01:58:18,370 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;@418df668, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 01:58:18,371 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 01:58:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 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 01:58:18,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 01:58:18,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:18,379 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 01:58:18,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:18,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash 126370538, now seen corresponding path program 1 times [2024-10-11 01:58:18,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:18,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770315555] [2024-10-11 01:58:18,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:18,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:18,660 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 01:58:18,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:18,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770315555] [2024-10-11 01:58:18,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770315555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:58:18,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:58:18,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:58:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573632333] [2024-10-11 01:58:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:58:18,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:58:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:18,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:58:18,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:58:18,697 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 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 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 01:58:18,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:18,758 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2024-10-11 01:58:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:58:18,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-10-11 01:58:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:18,766 INFO L225 Difference]: With dead ends: 35 [2024-10-11 01:58:18,766 INFO L226 Difference]: Without dead ends: 16 [2024-10-11 01:58:18,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 01:58:18,773 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:18,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-11 01:58:18,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-11 01:58:18,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 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 01:58:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2024-10-11 01:58:18,798 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 5 [2024-10-11 01:58:18,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:18,798 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-10-11 01:58:18,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 01:58:18,799 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2024-10-11 01:58:18,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 01:58:18,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:18,800 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:18,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 01:58:18,804 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:18,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1401987001, now seen corresponding path program 1 times [2024-10-11 01:58:18,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:18,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544221041] [2024-10-11 01:58:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:18,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:18,941 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 01:58:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544221041] [2024-10-11 01:58:18,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544221041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:58:18,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:58:18,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 01:58:18,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844062822] [2024-10-11 01:58:18,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:58:18,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 01:58:18,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:18,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 01:58:18,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:58:18,944 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 01:58:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:19,002 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-10-11 01:58:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 01:58:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-10-11 01:58:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:19,003 INFO L225 Difference]: With dead ends: 30 [2024-10-11 01:58:19,003 INFO L226 Difference]: Without dead ends: 25 [2024-10-11 01:58:19,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:58:19,004 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:19,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 80 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-11 01:58:19,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-10-11 01:58:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:58:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2024-10-11 01:58:19,013 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 15 [2024-10-11 01:58:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:19,013 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2024-10-11 01:58:19,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 01:58:19,014 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2024-10-11 01:58:19,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 01:58:19,014 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:19,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:19,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 01:58:19,014 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:19,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:19,015 INFO L85 PathProgramCache]: Analyzing trace with hash 541116398, now seen corresponding path program 1 times [2024-10-11 01:58:19,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:19,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946219702] [2024-10-11 01:58:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:19,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:58:19,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:19,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946219702] [2024-10-11 01:58:19,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946219702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:58:19,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:58:19,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 01:58:19,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457628380] [2024-10-11 01:58:19,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:58:19,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:58:19,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:19,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:58:19,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:58:19,114 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 01:58:19,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:19,132 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2024-10-11 01:58:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:58:19,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-10-11 01:58:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:19,133 INFO L225 Difference]: With dead ends: 36 [2024-10-11 01:58:19,133 INFO L226 Difference]: Without dead ends: 27 [2024-10-11 01:58:19,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:58:19,134 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:19,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:19,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-11 01:58:19,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-11 01:58:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:58:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2024-10-11 01:58:19,139 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 16 [2024-10-11 01:58:19,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:19,139 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2024-10-11 01:58:19,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 01:58:19,139 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2024-10-11 01:58:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 01:58:19,140 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:19,140 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:19,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 01:58:19,140 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:19,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash -180343911, now seen corresponding path program 1 times [2024-10-11 01:58:19,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:19,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525481965] [2024-10-11 01:58:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:19,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:58:19,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525481965] [2024-10-11 01:58:19,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525481965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:58:19,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:58:19,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 01:58:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998203100] [2024-10-11 01:58:19,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:58:19,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:58:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:19,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:58:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:58:19,190 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 01:58:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:19,205 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2024-10-11 01:58:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:58:19,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-10-11 01:58:19,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:19,206 INFO L225 Difference]: With dead ends: 46 [2024-10-11 01:58:19,206 INFO L226 Difference]: Without dead ends: 31 [2024-10-11 01:58:19,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:58:19,208 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:19,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-11 01:58:19,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-11 01:58:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 0 states have call successors, (0), 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 01:58:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2024-10-11 01:58:19,219 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 16 [2024-10-11 01:58:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:19,220 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2024-10-11 01:58:19,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 01:58:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2024-10-11 01:58:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 01:58:19,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:19,222 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:19,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 01:58:19,223 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:19,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash 668508425, now seen corresponding path program 1 times [2024-10-11 01:58:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:19,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495144965] [2024-10-11 01:58:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:19,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:19,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495144965] [2024-10-11 01:58:19,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495144965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:58:19,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:58:19,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:58:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883298524] [2024-10-11 01:58:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:58:19,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:58:19,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:58:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:58:19,323 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 01:58:19,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:19,340 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2024-10-11 01:58:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:58:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-10-11 01:58:19,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:19,341 INFO L225 Difference]: With dead ends: 58 [2024-10-11 01:58:19,341 INFO L226 Difference]: Without dead ends: 33 [2024-10-11 01:58:19,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:58:19,342 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:19,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:19,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-10-11 01:58:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-10-11 01:58:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 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 01:58:19,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2024-10-11 01:58:19,352 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 17 [2024-10-11 01:58:19,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:19,352 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2024-10-11 01:58:19,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 01:58:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2024-10-11 01:58:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-11 01:58:19,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:19,354 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:19,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 01:58:19,354 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:19,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash 566072616, now seen corresponding path program 1 times [2024-10-11 01:58:19,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:19,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497625797] [2024-10-11 01:58:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:19,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:58:19,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497625797] [2024-10-11 01:58:19,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497625797] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:58:19,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:58:19,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:58:19,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825739111] [2024-10-11 01:58:19,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:58:19,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:58:19,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:19,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:58:19,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:58:19,443 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 01:58:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:19,460 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2024-10-11 01:58:19,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:58:19,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2024-10-11 01:58:19,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:19,461 INFO L225 Difference]: With dead ends: 45 [2024-10-11 01:58:19,461 INFO L226 Difference]: Without dead ends: 29 [2024-10-11 01:58:19,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:58:19,462 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:19,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-11 01:58:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-11 01:58:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:58:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2024-10-11 01:58:19,473 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 18 [2024-10-11 01:58:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:19,473 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2024-10-11 01:58:19,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 01:58:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-10-11 01:58:19,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-11 01:58:19,474 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:19,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:19,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 01:58:19,474 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:19,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:19,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1647246806, now seen corresponding path program 1 times [2024-10-11 01:58:19,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:19,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906556082] [2024-10-11 01:58:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:19,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:58:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906556082] [2024-10-11 01:58:19,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906556082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:58:19,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:58:19,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 01:58:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51958311] [2024-10-11 01:58:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:58:19,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:58:19,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:19,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:58:19,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:58:19,534 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 01:58:19,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:19,549 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2024-10-11 01:58:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:58:19,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2024-10-11 01:58:19,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:19,551 INFO L225 Difference]: With dead ends: 34 [2024-10-11 01:58:19,551 INFO L226 Difference]: Without dead ends: 26 [2024-10-11 01:58:19,552 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 01:58:19,552 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:19,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:19,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-11 01:58:19,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-11 01:58:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 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 01:58:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2024-10-11 01:58:19,559 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 18 [2024-10-11 01:58:19,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:19,559 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2024-10-11 01:58:19,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 01:58:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2024-10-11 01:58:19,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 01:58:19,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:19,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:19,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 01:58:19,560 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:19,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:19,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1855808360, now seen corresponding path program 1 times [2024-10-11 01:58:19,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:19,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010238428] [2024-10-11 01:58:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:19,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:58:19,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010238428] [2024-10-11 01:58:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010238428] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267703006] [2024-10-11 01:58:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:19,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:19,642 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 01:58:19,644 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 01:58:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:19,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 01:58:19,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:58:19,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:58:19,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267703006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:58:19,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:58:19,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 01:58:19,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678737754] [2024-10-11 01:58:19,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:58:19,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 01:58:19,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:19,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 01:58:19,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:58:19,742 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:58:19,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:19,761 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-10-11 01:58:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 01:58:19,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-10-11 01:58:19,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:19,762 INFO L225 Difference]: With dead ends: 32 [2024-10-11 01:58:19,762 INFO L226 Difference]: Without dead ends: 20 [2024-10-11 01:58:19,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:58:19,763 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:19,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 48 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-11 01:58:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-11 01:58:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 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 01:58:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-10-11 01:58:19,767 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 19 [2024-10-11 01:58:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:19,767 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-10-11 01:58:19,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:58:19,767 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-10-11 01:58:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 01:58:19,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:19,768 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:19,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 01:58:19,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:19,972 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:19,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2094554387, now seen corresponding path program 1 times [2024-10-11 01:58:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:19,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717689269] [2024-10-11 01:58:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:19,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:20,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:20,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717689269] [2024-10-11 01:58:20,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717689269] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:58:20,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:58:20,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 01:58:20,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947007194] [2024-10-11 01:58:20,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:58:20,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:58:20,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:58:20,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:58:20,040 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:58:20,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:20,058 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-10-11 01:58:20,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:58:20,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-10-11 01:58:20,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:20,059 INFO L225 Difference]: With dead ends: 28 [2024-10-11 01:58:20,059 INFO L226 Difference]: Without dead ends: 21 [2024-10-11 01:58:20,060 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 01:58:20,060 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:20,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:20,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-11 01:58:20,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-11 01:58:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 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 01:58:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-10-11 01:58:20,066 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 19 [2024-10-11 01:58:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:20,066 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-10-11 01:58:20,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:58:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-10-11 01:58:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-11 01:58:20,067 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:20,067 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] [2024-10-11 01:58:20,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 01:58:20,068 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:20,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:20,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1720419291, now seen corresponding path program 1 times [2024-10-11 01:58:20,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:20,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049962555] [2024-10-11 01:58:20,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:20,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049962555] [2024-10-11 01:58:20,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049962555] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771092166] [2024-10-11 01:58:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:20,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:20,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:20,129 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 01:58:20,138 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 01:58:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:20,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 01:58:20,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:20,218 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:58:20,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771092166] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:58:20,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:58:20,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 01:58:20,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18392840] [2024-10-11 01:58:20,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:58:20,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 01:58:20,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:20,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 01:58:20,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:58:20,220 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 01:58:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:20,235 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-10-11 01:58:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 01:58:20,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-11 01:58:20,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:20,236 INFO L225 Difference]: With dead ends: 27 [2024-10-11 01:58:20,236 INFO L226 Difference]: Without dead ends: 22 [2024-10-11 01:58:20,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:58:20,237 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:20,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 40 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:20,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-11 01:58:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-11 01:58:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 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 01:58:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-10-11 01:58:20,242 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 20 [2024-10-11 01:58:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:20,243 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-10-11 01:58:20,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 01:58:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-10-11 01:58:20,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 01:58:20,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:20,243 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] [2024-10-11 01:58:20,257 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 01:58:20,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:20,444 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:20,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1822582796, now seen corresponding path program 1 times [2024-10-11 01:58:20,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:20,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328890619] [2024-10-11 01:58:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:20,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:20,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:20,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328890619] [2024-10-11 01:58:20,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328890619] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233255080] [2024-10-11 01:58:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:20,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:20,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:20,601 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 01:58:20,606 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 01:58:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:20,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 01:58:20,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:20,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:20,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233255080] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:20,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:20,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2024-10-11 01:58:20,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123193774] [2024-10-11 01:58:20,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:20,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 01:58:20,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:20,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 01:58:20,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-10-11 01:58:20,914 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 01:58:21,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:21,108 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2024-10-11 01:58:21,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 01:58:21,108 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 21 [2024-10-11 01:58:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:21,109 INFO L225 Difference]: With dead ends: 43 [2024-10-11 01:58:21,109 INFO L226 Difference]: Without dead ends: 38 [2024-10-11 01:58:21,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2024-10-11 01:58:21,109 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:21,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 190 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-11 01:58:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2024-10-11 01:58:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 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 01:58:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-10-11 01:58:21,116 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 21 [2024-10-11 01:58:21,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:21,116 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-10-11 01:58:21,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 01:58:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-10-11 01:58:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 01:58:21,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:21,117 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:21,130 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 01:58:21,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:21,320 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:21,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash 110216570, now seen corresponding path program 2 times [2024-10-11 01:58:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:21,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361021743] [2024-10-11 01:58:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:21,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:21,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:21,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361021743] [2024-10-11 01:58:21,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361021743] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:21,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483366288] [2024-10-11 01:58:21,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:58:21,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:21,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:21,498 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 01:58:21,499 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 01:58:21,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:58:21,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:21,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:58:21,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:21,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:21,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483366288] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:21,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:21,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 01:58:21,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828955785] [2024-10-11 01:58:21,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:21,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 01:58:21,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:21,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 01:58:21,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:58:21,698 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:58:21,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:21,767 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2024-10-11 01:58:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 01:58:21,767 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 22 [2024-10-11 01:58:21,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:21,768 INFO L225 Difference]: With dead ends: 48 [2024-10-11 01:58:21,768 INFO L226 Difference]: Without dead ends: 39 [2024-10-11 01:58:21,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:58:21,769 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:21,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 85 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-11 01:58:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-10-11 01:58:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 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 01:58:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-10-11 01:58:21,774 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 22 [2024-10-11 01:58:21,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:21,775 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-10-11 01:58:21,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:58:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-10-11 01:58:21,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 01:58:21,775 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:21,775 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:21,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:21,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 01:58:21,976 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:21,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:21,977 INFO L85 PathProgramCache]: Analyzing trace with hash 694684155, now seen corresponding path program 3 times [2024-10-11 01:58:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:21,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372535671] [2024-10-11 01:58:21,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:21,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:22,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:22,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372535671] [2024-10-11 01:58:22,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372535671] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:22,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703909414] [2024-10-11 01:58:22,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:58:22,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:22,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:22,016 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 01:58:22,024 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 01:58:22,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 01:58:22,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:22,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 01:58:22,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:22,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:22,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703909414] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:22,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:22,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-10-11 01:58:22,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725353912] [2024-10-11 01:58:22,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:22,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 01:58:22,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:22,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 01:58:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:58:22,122 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 01:58:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:22,140 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2024-10-11 01:58:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 01:58:22,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 22 [2024-10-11 01:58:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:22,141 INFO L225 Difference]: With dead ends: 60 [2024-10-11 01:58:22,141 INFO L226 Difference]: Without dead ends: 49 [2024-10-11 01:58:22,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:58:22,142 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:22,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-11 01:58:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-11 01:58:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 0 states have call successors, (0), 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 01:58:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2024-10-11 01:58:22,147 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 22 [2024-10-11 01:58:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:22,148 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2024-10-11 01:58:22,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 01:58:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2024-10-11 01:58:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 01:58:22,148 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:22,149 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:22,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:22,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 01:58:22,350 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:22,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:22,350 INFO L85 PathProgramCache]: Analyzing trace with hash -752822738, now seen corresponding path program 4 times [2024-10-11 01:58:22,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:22,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104681286] [2024-10-11 01:58:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:22,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:22,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:22,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104681286] [2024-10-11 01:58:22,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104681286] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:22,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517193715] [2024-10-11 01:58:22,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:58:22,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:22,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:22,406 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 01:58:22,409 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 01:58:22,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:58:22,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:22,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 01:58:22,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:22,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:22,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517193715] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:22,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:22,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-10-11 01:58:22,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967135999] [2024-10-11 01:58:22,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:22,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 01:58:22,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:22,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 01:58:22,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:58:22,503 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 01:58:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:22,524 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2024-10-11 01:58:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 01:58:22,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 22 [2024-10-11 01:58:22,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:22,525 INFO L225 Difference]: With dead ends: 88 [2024-10-11 01:58:22,525 INFO L226 Difference]: Without dead ends: 59 [2024-10-11 01:58:22,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:58:22,526 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:22,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-11 01:58:22,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-11 01:58:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 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 01:58:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2024-10-11 01:58:22,532 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 22 [2024-10-11 01:58:22,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:22,532 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2024-10-11 01:58:22,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 01:58:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2024-10-11 01:58:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 01:58:22,533 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:22,533 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:22,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 01:58:22,733 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,SelfDestructingSolverStorable13 [2024-10-11 01:58:22,734 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:22,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:22,734 INFO L85 PathProgramCache]: Analyzing trace with hash 38970029, now seen corresponding path program 5 times [2024-10-11 01:58:22,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:22,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636278805] [2024-10-11 01:58:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:22,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:22,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:22,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636278805] [2024-10-11 01:58:22,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636278805] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:22,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812077958] [2024-10-11 01:58:22,800 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:58:22,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:22,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:22,802 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 01:58:22,807 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 01:58:22,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:58:22,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:22,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:58:22,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:22,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:22,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812077958] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:22,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:22,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 01:58:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660085736] [2024-10-11 01:58:22,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:22,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 01:58:22,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 01:58:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:58:22,979 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:58:23,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:23,055 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2024-10-11 01:58:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 01:58:23,055 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 22 [2024-10-11 01:58:23,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:23,056 INFO L225 Difference]: With dead ends: 72 [2024-10-11 01:58:23,056 INFO L226 Difference]: Without dead ends: 61 [2024-10-11 01:58:23,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:58:23,056 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:23,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-11 01:58:23,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-11 01:58:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 0 states have call successors, (0), 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 01:58:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2024-10-11 01:58:23,067 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 22 [2024-10-11 01:58:23,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:23,068 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2024-10-11 01:58:23,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:58:23,068 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2024-10-11 01:58:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 01:58:23,069 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:23,069 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:23,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:23,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:23,273 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:23,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:23,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1294635326, now seen corresponding path program 6 times [2024-10-11 01:58:23,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:23,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048730161] [2024-10-11 01:58:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:23,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:23,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048730161] [2024-10-11 01:58:23,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048730161] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904630247] [2024-10-11 01:58:23,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:58:23,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:23,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:23,388 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 01:58:23,389 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 01:58:23,436 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 01:58:23,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:23,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:58:23,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:23,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:23,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904630247] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:23,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:23,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 01:58:23,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807324087] [2024-10-11 01:58:23,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:23,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 01:58:23,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:23,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 01:58:23,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:58:23,585 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:23,644 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2024-10-11 01:58:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 01:58:23,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 23 [2024-10-11 01:58:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:23,645 INFO L225 Difference]: With dead ends: 84 [2024-10-11 01:58:23,645 INFO L226 Difference]: Without dead ends: 61 [2024-10-11 01:58:23,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:58:23,646 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:23,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-11 01:58:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-11 01:58:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 60 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:58:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2024-10-11 01:58:23,652 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 23 [2024-10-11 01:58:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:23,652 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2024-10-11 01:58:23,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:23,652 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2024-10-11 01:58:23,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 01:58:23,653 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:23,653 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:23,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:23,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 01:58:23,858 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:23,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:23,858 INFO L85 PathProgramCache]: Analyzing trace with hash 652795641, now seen corresponding path program 7 times [2024-10-11 01:58:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:23,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522575588] [2024-10-11 01:58:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:23,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:24,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:24,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522575588] [2024-10-11 01:58:24,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522575588] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:24,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231753124] [2024-10-11 01:58:24,014 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:58:24,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:24,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:24,017 INFO L229 MonitoredProcess]: Starting monitored process 10 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 01:58:24,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 01:58:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:24,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-11 01:58:24,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:24,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:24,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231753124] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:24,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:24,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-10-11 01:58:24,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690730471] [2024-10-11 01:58:24,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:24,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 01:58:24,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:24,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 01:58:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:58:24,463 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 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 01:58:24,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:24,635 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2024-10-11 01:58:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 01:58:24,636 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 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 23 [2024-10-11 01:58:24,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:24,636 INFO L225 Difference]: With dead ends: 97 [2024-10-11 01:58:24,636 INFO L226 Difference]: Without dead ends: 89 [2024-10-11 01:58:24,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2024-10-11 01:58:24,637 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:24,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 243 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-11 01:58:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2024-10-11 01:58:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 79 states have internal predecessors, (101), 0 states have call successors, (0), 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 01:58:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2024-10-11 01:58:24,659 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 23 [2024-10-11 01:58:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:24,660 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2024-10-11 01:58:24,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 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 01:58:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2024-10-11 01:58:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 01:58:24,665 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:24,665 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:24,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:24,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 01:58:24,871 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:24,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1360307614, now seen corresponding path program 8 times [2024-10-11 01:58:24,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:24,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271374193] [2024-10-11 01:58:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:24,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 01:58:25,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:25,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271374193] [2024-10-11 01:58:25,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271374193] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:25,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667749503] [2024-10-11 01:58:25,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:58:25,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:25,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:25,048 INFO L229 MonitoredProcess]: Starting monitored process 11 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 01:58:25,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 01:58:25,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:58:25,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:25,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:58:25,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:25,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:25,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667749503] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:25,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:25,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-10-11 01:58:25,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819095858] [2024-10-11 01:58:25,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:25,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 01:58:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 01:58:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-11 01:58:25,231 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 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 01:58:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:25,306 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2024-10-11 01:58:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 01:58:25,306 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 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 23 [2024-10-11 01:58:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:25,307 INFO L225 Difference]: With dead ends: 92 [2024-10-11 01:58:25,307 INFO L226 Difference]: Without dead ends: 78 [2024-10-11 01:58:25,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:58:25,308 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:25,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-11 01:58:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-11 01:58:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 77 states have internal predecessors, (96), 0 states have call successors, (0), 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 01:58:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2024-10-11 01:58:25,316 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 23 [2024-10-11 01:58:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:25,316 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2024-10-11 01:58:25,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 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 01:58:25,316 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2024-10-11 01:58:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 01:58:25,317 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:25,317 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:25,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:25,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 01:58:25,518 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:25,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1793446867, now seen corresponding path program 9 times [2024-10-11 01:58:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485769418] [2024-10-11 01:58:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:25,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:25,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:25,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485769418] [2024-10-11 01:58:25,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485769418] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:25,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144715616] [2024-10-11 01:58:25,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:58:25,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:25,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:25,644 INFO L229 MonitoredProcess]: Starting monitored process 12 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 01:58:25,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 01:58:25,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:58:25,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:25,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 01:58:25,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:25,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:25,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144715616] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:25,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:25,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-10-11 01:58:25,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846619960] [2024-10-11 01:58:25,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:25,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 01:58:25,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 01:58:25,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-10-11 01:58:25,939 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 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 01:58:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:26,084 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2024-10-11 01:58:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 01:58:26,084 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2024-10-11 01:58:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:26,085 INFO L225 Difference]: With dead ends: 101 [2024-10-11 01:58:26,085 INFO L226 Difference]: Without dead ends: 79 [2024-10-11 01:58:26,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:58:26,086 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:26,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 153 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:26,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-10-11 01:58:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2024-10-11 01:58:26,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 74 states have internal predecessors, (93), 0 states have call successors, (0), 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 01:58:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 93 transitions. [2024-10-11 01:58:26,098 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 93 transitions. Word has length 24 [2024-10-11 01:58:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:26,098 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 93 transitions. [2024-10-11 01:58:26,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 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 01:58:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 93 transitions. [2024-10-11 01:58:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 01:58:26,099 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:26,099 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:26,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 01:58:26,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:26,300 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:26,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash 292877658, now seen corresponding path program 10 times [2024-10-11 01:58:26,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:26,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882849940] [2024-10-11 01:58:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:26,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:26,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:26,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882849940] [2024-10-11 01:58:26,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882849940] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:26,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423471823] [2024-10-11 01:58:26,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:58:26,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:26,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:26,467 INFO L229 MonitoredProcess]: Starting monitored process 13 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 01:58:26,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 01:58:26,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:58:26,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:26,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 01:58:26,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:26,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:26,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423471823] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:26,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:26,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-10-11 01:58:26,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235297923] [2024-10-11 01:58:26,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:26,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 01:58:26,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:26,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 01:58:26,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-10-11 01:58:26,824 INFO L87 Difference]: Start difference. First operand 75 states and 93 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 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 01:58:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:26,952 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2024-10-11 01:58:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 01:58:26,953 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2024-10-11 01:58:26,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:26,953 INFO L225 Difference]: With dead ends: 88 [2024-10-11 01:58:26,953 INFO L226 Difference]: Without dead ends: 77 [2024-10-11 01:58:26,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:58:26,954 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:26,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-11 01:58:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-11 01:58:26,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.25) internal successors, (95), 76 states have internal predecessors, (95), 0 states have call successors, (0), 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 01:58:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2024-10-11 01:58:26,974 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 24 [2024-10-11 01:58:26,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:26,974 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2024-10-11 01:58:26,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 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 01:58:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2024-10-11 01:58:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 01:58:26,974 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:26,974 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] [2024-10-11 01:58:26,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 01:58:27,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:27,175 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:27,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:27,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1917800498, now seen corresponding path program 11 times [2024-10-11 01:58:27,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:27,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355191096] [2024-10-11 01:58:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:27,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:27,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:27,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355191096] [2024-10-11 01:58:27,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355191096] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:27,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970508861] [2024-10-11 01:58:27,219 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:58:27,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:27,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:27,221 INFO L229 MonitoredProcess]: Starting monitored process 14 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 01:58:27,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 01:58:27,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:58:27,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:27,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 01:58:27,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:27,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:27,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970508861] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:27,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:27,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-11 01:58:27,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30921305] [2024-10-11 01:58:27,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:27,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 01:58:27,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:27,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 01:58:27,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-10-11 01:58:27,385 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 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 01:58:27,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:27,459 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2024-10-11 01:58:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 01:58:27,462 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 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 24 [2024-10-11 01:58:27,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:27,463 INFO L225 Difference]: With dead ends: 94 [2024-10-11 01:58:27,463 INFO L226 Difference]: Without dead ends: 65 [2024-10-11 01:58:27,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-10-11 01:58:27,463 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:27,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:27,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-11 01:58:27,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-10-11 01:58:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 0 states have call successors, (0), 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 01:58:27,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2024-10-11 01:58:27,481 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 24 [2024-10-11 01:58:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:27,481 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2024-10-11 01:58:27,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 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 01:58:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2024-10-11 01:58:27,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 01:58:27,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:27,482 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] [2024-10-11 01:58:27,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 01:58:27,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:27,682 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:27,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1920327959, now seen corresponding path program 12 times [2024-10-11 01:58:27,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:27,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681112579] [2024-10-11 01:58:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:27,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:27,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:27,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681112579] [2024-10-11 01:58:27,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681112579] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:27,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914416428] [2024-10-11 01:58:27,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:58:27,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:27,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:27,741 INFO L229 MonitoredProcess]: Starting monitored process 15 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 01:58:27,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 01:58:27,800 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 01:58:27,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:27,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 01:58:27,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:27,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:27,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914416428] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:27,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:27,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-11 01:58:27,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105062749] [2024-10-11 01:58:27,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:27,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 01:58:27,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:27,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 01:58:27,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-10-11 01:58:27,897 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 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 01:58:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:27,939 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2024-10-11 01:58:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 01:58:27,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 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 24 [2024-10-11 01:58:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:27,944 INFO L225 Difference]: With dead ends: 71 [2024-10-11 01:58:27,944 INFO L226 Difference]: Without dead ends: 66 [2024-10-11 01:58:27,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-10-11 01:58:27,945 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:27,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 86 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-10-11 01:58:27,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-10-11 01:58:27,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 65 states have internal predecessors, (80), 0 states have call successors, (0), 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 01:58:27,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2024-10-11 01:58:27,951 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 24 [2024-10-11 01:58:27,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:27,952 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2024-10-11 01:58:27,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 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 01:58:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2024-10-11 01:58:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 01:58:27,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:27,952 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:27,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 01:58:28,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-11 01:58:28,153 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:28,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash -66002452, now seen corresponding path program 13 times [2024-10-11 01:58:28,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:28,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299999636] [2024-10-11 01:58:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:28,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299999636] [2024-10-11 01:58:28,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299999636] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261468112] [2024-10-11 01:58:28,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:58:28,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:28,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:28,325 INFO L229 MonitoredProcess]: Starting monitored process 16 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 01:58:28,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 01:58:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:28,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 01:58:28,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:28,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:28,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261468112] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:28,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:28,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 26 [2024-10-11 01:58:28,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764524798] [2024-10-11 01:58:28,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:28,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 01:58:28,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:28,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 01:58:28,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2024-10-11 01:58:28,604 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 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 01:58:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:28,827 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2024-10-11 01:58:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 01:58:28,827 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 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 25 [2024-10-11 01:58:28,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:28,828 INFO L225 Difference]: With dead ends: 91 [2024-10-11 01:58:28,828 INFO L226 Difference]: Without dead ends: 83 [2024-10-11 01:58:28,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 01:58:28,830 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 38 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:28,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 407 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:28,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-11 01:58:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2024-10-11 01:58:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 0 states have call successors, (0), 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 01:58:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-10-11 01:58:28,837 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 25 [2024-10-11 01:58:28,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:28,838 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-10-11 01:58:28,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 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 01:58:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-10-11 01:58:28,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 01:58:28,839 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:28,839 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:28,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 01:58:29,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:29,043 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:29,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:29,043 INFO L85 PathProgramCache]: Analyzing trace with hash -570183088, now seen corresponding path program 14 times [2024-10-11 01:58:29,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:29,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208582449] [2024-10-11 01:58:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:29,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:29,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208582449] [2024-10-11 01:58:29,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208582449] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:29,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386612503] [2024-10-11 01:58:29,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:58:29,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:29,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:29,197 INFO L229 MonitoredProcess]: Starting monitored process 17 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 01:58:29,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 01:58:29,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:58:29,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:29,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 01:58:29,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:29,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:29,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386612503] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:29,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:29,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 24 [2024-10-11 01:58:29,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271910145] [2024-10-11 01:58:29,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:29,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 01:58:29,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:29,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 01:58:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-10-11 01:58:29,435 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 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 01:58:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:29,593 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2024-10-11 01:58:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 01:58:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 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 25 [2024-10-11 01:58:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:29,594 INFO L225 Difference]: With dead ends: 92 [2024-10-11 01:58:29,594 INFO L226 Difference]: Without dead ends: 87 [2024-10-11 01:58:29,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:58:29,595 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 28 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:29,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 246 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-11 01:58:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2024-10-11 01:58:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 82 states have internal predecessors, (100), 0 states have call successors, (0), 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 01:58:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2024-10-11 01:58:29,606 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 25 [2024-10-11 01:58:29,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:29,606 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2024-10-11 01:58:29,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 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 01:58:29,606 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2024-10-11 01:58:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 01:58:29,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:29,607 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:29,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:29,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-11 01:58:29,811 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:29,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:29,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1693616026, now seen corresponding path program 15 times [2024-10-11 01:58:29,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:29,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094329712] [2024-10-11 01:58:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:29,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:29,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:29,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094329712] [2024-10-11 01:58:29,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094329712] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:29,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723901419] [2024-10-11 01:58:29,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:58:29,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:29,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:29,990 INFO L229 MonitoredProcess]: Starting monitored process 18 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 01:58:29,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 01:58:30,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:58:30,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:30,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 01:58:30,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:30,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:30,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723901419] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:30,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:30,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-10-11 01:58:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840458433] [2024-10-11 01:58:30,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:30,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 01:58:30,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 01:58:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2024-10-11 01:58:30,339 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:58:30,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:30,527 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2024-10-11 01:58:30,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 01:58:30,528 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:58:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:30,529 INFO L225 Difference]: With dead ends: 115 [2024-10-11 01:58:30,529 INFO L226 Difference]: Without dead ends: 91 [2024-10-11 01:58:30,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:58:30,530 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:30,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 165 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-11 01:58:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2024-10-11 01:58:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 85 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 01:58:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2024-10-11 01:58:30,540 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 26 [2024-10-11 01:58:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:30,541 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2024-10-11 01:58:30,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:58:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2024-10-11 01:58:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 01:58:30,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:30,541 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:30,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-11 01:58:30,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:30,742 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:30,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:30,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1945166861, now seen corresponding path program 16 times [2024-10-11 01:58:30,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:30,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070346678] [2024-10-11 01:58:30,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:30,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:30,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:30,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070346678] [2024-10-11 01:58:30,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070346678] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:30,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743489319] [2024-10-11 01:58:30,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:58:30,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:30,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:30,908 INFO L229 MonitoredProcess]: Starting monitored process 19 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 01:58:30,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 01:58:30,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:58:30,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:30,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 01:58:30,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:31,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:31,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743489319] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:31,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:31,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-10-11 01:58:31,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049276851] [2024-10-11 01:58:31,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:31,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 01:58:31,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:31,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 01:58:31,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-10-11 01:58:31,286 INFO L87 Difference]: Start difference. First operand 86 states and 105 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:58:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:31,533 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2024-10-11 01:58:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 01:58:31,534 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:58:31,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:31,534 INFO L225 Difference]: With dead ends: 100 [2024-10-11 01:58:31,534 INFO L226 Difference]: Without dead ends: 88 [2024-10-11 01:58:31,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:58:31,535 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:31,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:31,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-11 01:58:31,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-11 01:58:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 87 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 01:58:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2024-10-11 01:58:31,549 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 26 [2024-10-11 01:58:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:31,550 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2024-10-11 01:58:31,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:58:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2024-10-11 01:58:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 01:58:31,550 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:31,550 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:31,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:31,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-11 01:58:31,751 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:31,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:31,751 INFO L85 PathProgramCache]: Analyzing trace with hash -466614217, now seen corresponding path program 17 times [2024-10-11 01:58:31,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:31,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260782199] [2024-10-11 01:58:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:31,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260782199] [2024-10-11 01:58:31,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260782199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355338936] [2024-10-11 01:58:31,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:58:31,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:31,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:31,806 INFO L229 MonitoredProcess]: Starting monitored process 20 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 01:58:31,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 01:58:31,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 01:58:31,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:31,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 01:58:31,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:31,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:31,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355338936] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:31,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:31,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-10-11 01:58:31,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571309447] [2024-10-11 01:58:31,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:31,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 01:58:31,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 01:58:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:58:31,919 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:31,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:31,976 INFO L93 Difference]: Finished difference Result 118 states and 144 transitions. [2024-10-11 01:58:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 01:58:31,976 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:31,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:31,977 INFO L225 Difference]: With dead ends: 118 [2024-10-11 01:58:31,977 INFO L226 Difference]: Without dead ends: 106 [2024-10-11 01:58:31,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:58:31,979 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:31,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 123 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-11 01:58:32,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2024-10-11 01:58:32,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.2427184466019416) internal successors, (128), 103 states have internal predecessors, (128), 0 states have call successors, (0), 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 01:58:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2024-10-11 01:58:32,012 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 26 [2024-10-11 01:58:32,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:32,012 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2024-10-11 01:58:32,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2024-10-11 01:58:32,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 01:58:32,012 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:32,013 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:32,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:32,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:32,213 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:32,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1743716338, now seen corresponding path program 18 times [2024-10-11 01:58:32,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940909942] [2024-10-11 01:58:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:32,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:32,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:32,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940909942] [2024-10-11 01:58:32,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940909942] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155657721] [2024-10-11 01:58:32,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:58:32,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:32,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:32,286 INFO L229 MonitoredProcess]: Starting monitored process 21 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 01:58:32,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 01:58:32,337 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 01:58:32,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:32,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 01:58:32,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:32,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:58:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155657721] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:32,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:32,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-10-11 01:58:32,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727549836] [2024-10-11 01:58:32,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:32,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 01:58:32,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:32,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 01:58:32,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:58:32,401 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:32,447 INFO L93 Difference]: Finished difference Result 181 states and 228 transitions. [2024-10-11 01:58:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 01:58:32,448 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:32,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:32,449 INFO L225 Difference]: With dead ends: 181 [2024-10-11 01:58:32,449 INFO L226 Difference]: Without dead ends: 126 [2024-10-11 01:58:32,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:58:32,449 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:32,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 69 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-11 01:58:32,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-10-11 01:58:32,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.24) internal successors, (155), 125 states have internal predecessors, (155), 0 states have call successors, (0), 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 01:58:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2024-10-11 01:58:32,465 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 26 [2024-10-11 01:58:32,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:32,465 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2024-10-11 01:58:32,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2024-10-11 01:58:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 01:58:32,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:32,467 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:32,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:32,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 01:58:32,668 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:32,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash -384644711, now seen corresponding path program 19 times [2024-10-11 01:58:32,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:32,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566489607] [2024-10-11 01:58:32,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:32,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:32,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:32,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566489607] [2024-10-11 01:58:32,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566489607] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222042044] [2024-10-11 01:58:32,846 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:58:32,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:32,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:32,847 INFO L229 MonitoredProcess]: Starting monitored process 22 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 01:58:32,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-11 01:58:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:32,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-11 01:58:32,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:33,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:33,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222042044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:33,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:33,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 29 [2024-10-11 01:58:33,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164044971] [2024-10-11 01:58:33,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:33,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 01:58:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 01:58:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=741, Unknown=0, NotChecked=0, Total=812 [2024-10-11 01:58:33,174 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 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 01:58:33,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:33,439 INFO L93 Difference]: Finished difference Result 157 states and 190 transitions. [2024-10-11 01:58:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 01:58:33,440 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 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 01:58:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:33,441 INFO L225 Difference]: With dead ends: 157 [2024-10-11 01:58:33,441 INFO L226 Difference]: Without dead ends: 149 [2024-10-11 01:58:33,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2024-10-11 01:58:33,442 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 47 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:33,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 525 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:58:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-11 01:58:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 134. [2024-10-11 01:58:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.2330827067669172) internal successors, (164), 133 states have internal predecessors, (164), 0 states have call successors, (0), 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 01:58:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 164 transitions. [2024-10-11 01:58:33,461 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 164 transitions. Word has length 27 [2024-10-11 01:58:33,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:33,462 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 164 transitions. [2024-10-11 01:58:33,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 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 01:58:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 164 transitions. [2024-10-11 01:58:33,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 01:58:33,462 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:33,463 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:33,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:33,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 01:58:33,666 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:33,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:33,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1446506014, now seen corresponding path program 20 times [2024-10-11 01:58:33,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:33,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237990734] [2024-10-11 01:58:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:33,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 01:58:33,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:33,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237990734] [2024-10-11 01:58:33,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237990734] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:33,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89394238] [2024-10-11 01:58:33,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:58:33,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:33,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:33,817 INFO L229 MonitoredProcess]: Starting monitored process 23 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 01:58:33,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-11 01:58:33,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:58:33,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:33,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 01:58:33,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 01:58:33,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 01:58:34,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89394238] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:34,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:34,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-10-11 01:58:34,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144978369] [2024-10-11 01:58:34,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:34,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 01:58:34,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 01:58:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-10-11 01:58:34,044 INFO L87 Difference]: Start difference. First operand 134 states and 164 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:58:34,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:34,180 INFO L93 Difference]: Finished difference Result 176 states and 214 transitions. [2024-10-11 01:58:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 01:58:34,180 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:58:34,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:34,181 INFO L225 Difference]: With dead ends: 176 [2024-10-11 01:58:34,181 INFO L226 Difference]: Without dead ends: 142 [2024-10-11 01:58:34,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-10-11 01:58:34,182 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:34,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 153 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-11 01:58:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-10-11 01:58:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.2127659574468086) internal successors, (171), 141 states have internal predecessors, (171), 0 states have call successors, (0), 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 01:58:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2024-10-11 01:58:34,199 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 27 [2024-10-11 01:58:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:34,199 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2024-10-11 01:58:34,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:58:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2024-10-11 01:58:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 01:58:34,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:34,200 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:34,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:34,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:34,400 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:34,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:34,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1539073127, now seen corresponding path program 21 times [2024-10-11 01:58:34,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:34,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724888137] [2024-10-11 01:58:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:34,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:34,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724888137] [2024-10-11 01:58:34,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724888137] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033626692] [2024-10-11 01:58:34,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:58:34,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:34,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:34,570 INFO L229 MonitoredProcess]: Starting monitored process 24 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 01:58:34,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-11 01:58:34,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 01:58:34,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:34,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 01:58:34,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:34,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:34,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033626692] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:34,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:34,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 27 [2024-10-11 01:58:34,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369269553] [2024-10-11 01:58:34,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:34,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 01:58:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 01:58:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2024-10-11 01:58:34,885 INFO L87 Difference]: Start difference. First operand 142 states and 171 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 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 01:58:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:35,066 INFO L93 Difference]: Finished difference Result 169 states and 202 transitions. [2024-10-11 01:58:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 01:58:35,067 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 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 01:58:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:35,068 INFO L225 Difference]: With dead ends: 169 [2024-10-11 01:58:35,068 INFO L226 Difference]: Without dead ends: 149 [2024-10-11 01:58:35,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 01:58:35,069 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:35,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 310 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-11 01:58:35,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2024-10-11 01:58:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 140 states have internal predecessors, (171), 0 states have call successors, (0), 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 01:58:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 171 transitions. [2024-10-11 01:58:35,106 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 171 transitions. Word has length 27 [2024-10-11 01:58:35,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:35,107 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 171 transitions. [2024-10-11 01:58:35,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 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 01:58:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 171 transitions. [2024-10-11 01:58:35,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 01:58:35,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:35,107 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:35,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:35,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:35,312 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:35,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:35,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1336907646, now seen corresponding path program 22 times [2024-10-11 01:58:35,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:35,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620665714] [2024-10-11 01:58:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:35,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 01:58:35,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:35,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620665714] [2024-10-11 01:58:35,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620665714] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:35,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122510139] [2024-10-11 01:58:35,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:58:35,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:35,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:35,488 INFO L229 MonitoredProcess]: Starting monitored process 25 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 01:58:35,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-11 01:58:35,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:58:35,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:35,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 01:58:35,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 01:58:35,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 01:58:35,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122510139] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:35,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-10-11 01:58:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732253698] [2024-10-11 01:58:35,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:35,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 01:58:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 01:58:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-10-11 01:58:35,755 INFO L87 Difference]: Start difference. First operand 141 states and 171 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:58:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:35,886 INFO L93 Difference]: Finished difference Result 159 states and 189 transitions. [2024-10-11 01:58:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 01:58:35,886 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:58:35,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:35,887 INFO L225 Difference]: With dead ends: 159 [2024-10-11 01:58:35,887 INFO L226 Difference]: Without dead ends: 141 [2024-10-11 01:58:35,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:58:35,888 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:35,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 187 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:35,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-10-11 01:58:35,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-10-11 01:58:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 140 states have internal predecessors, (167), 0 states have call successors, (0), 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 01:58:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2024-10-11 01:58:35,908 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 27 [2024-10-11 01:58:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:35,908 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2024-10-11 01:58:35,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:58:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2024-10-11 01:58:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 01:58:35,909 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:35,909 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:35,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:36,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-11 01:58:36,110 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:36,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:36,110 INFO L85 PathProgramCache]: Analyzing trace with hash 405640589, now seen corresponding path program 23 times [2024-10-11 01:58:36,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:36,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677508540] [2024-10-11 01:58:36,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:36,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:36,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:36,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677508540] [2024-10-11 01:58:36,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677508540] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:36,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788725831] [2024-10-11 01:58:36,264 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:58:36,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:36,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:36,265 INFO L229 MonitoredProcess]: Starting monitored process 26 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 01:58:36,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-11 01:58:36,340 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 01:58:36,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:36,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 01:58:36,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:36,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:36,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788725831] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:36,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:36,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-10-11 01:58:36,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506450149] [2024-10-11 01:58:36,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:36,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 01:58:36,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 01:58:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2024-10-11 01:58:36,723 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:58:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:36,990 INFO L93 Difference]: Finished difference Result 198 states and 233 transitions. [2024-10-11 01:58:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 01:58:36,991 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:58:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:36,992 INFO L225 Difference]: With dead ends: 198 [2024-10-11 01:58:36,992 INFO L226 Difference]: Without dead ends: 170 [2024-10-11 01:58:36,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2024-10-11 01:58:36,993 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:36,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 228 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-10-11 01:58:37,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 155. [2024-10-11 01:58:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1948051948051948) internal successors, (184), 154 states have internal predecessors, (184), 0 states have call successors, (0), 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 01:58:37,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2024-10-11 01:58:37,016 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 28 [2024-10-11 01:58:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:37,016 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2024-10-11 01:58:37,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:58:37,016 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2024-10-11 01:58:37,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 01:58:37,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:37,017 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:37,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:37,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-11 01:58:37,221 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:37,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash -386218118, now seen corresponding path program 24 times [2024-10-11 01:58:37,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:37,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066412086] [2024-10-11 01:58:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:37,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:37,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066412086] [2024-10-11 01:58:37,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066412086] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:37,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232414205] [2024-10-11 01:58:37,415 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:58:37,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:37,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:37,416 INFO L229 MonitoredProcess]: Starting monitored process 27 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 01:58:37,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-11 01:58:37,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-11 01:58:37,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:37,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 01:58:37,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:37,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:37,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232414205] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:37,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:37,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-10-11 01:58:37,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350953199] [2024-10-11 01:58:37,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:37,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-11 01:58:37,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:37,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-11 01:58:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:58:37,897 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:58:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:38,231 INFO L93 Difference]: Finished difference Result 172 states and 204 transitions. [2024-10-11 01:58:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 01:58:38,232 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:58:38,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:38,232 INFO L225 Difference]: With dead ends: 172 [2024-10-11 01:58:38,232 INFO L226 Difference]: Without dead ends: 158 [2024-10-11 01:58:38,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2024-10-11 01:58:38,233 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:38,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 337 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:58:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-10-11 01:58:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-10-11 01:58:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 157 states have internal predecessors, (187), 0 states have call successors, (0), 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 01:58:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 187 transitions. [2024-10-11 01:58:38,257 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 187 transitions. Word has length 28 [2024-10-11 01:58:38,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:38,258 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 187 transitions. [2024-10-11 01:58:38,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:58:38,258 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 187 transitions. [2024-10-11 01:58:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 01:58:38,258 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:38,258 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:38,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:38,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:38,459 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:38,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:38,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1838398290, now seen corresponding path program 25 times [2024-10-11 01:58:38,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:38,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23221042] [2024-10-11 01:58:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:38,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:38,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:38,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23221042] [2024-10-11 01:58:38,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23221042] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:38,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482000487] [2024-10-11 01:58:38,519 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:58:38,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:38,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:38,520 INFO L229 MonitoredProcess]: Starting monitored process 28 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 01:58:38,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-11 01:58:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:38,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 01:58:38,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:38,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482000487] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:38,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-11 01:58:38,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818658635] [2024-10-11 01:58:38,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:38,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 01:58:38,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:38,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 01:58:38,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-10-11 01:58:38,684 INFO L87 Difference]: Start difference. First operand 158 states and 187 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:38,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:38,784 INFO L93 Difference]: Finished difference Result 196 states and 232 transitions. [2024-10-11 01:58:38,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 01:58:38,784 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:38,785 INFO L225 Difference]: With dead ends: 196 [2024-10-11 01:58:38,785 INFO L226 Difference]: Without dead ends: 146 [2024-10-11 01:58:38,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-10-11 01:58:38,786 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:38,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 94 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:38,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-10-11 01:58:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-10-11 01:58:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.1793103448275861) internal successors, (171), 145 states have internal predecessors, (171), 0 states have call successors, (0), 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 01:58:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2024-10-11 01:58:38,817 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 28 [2024-10-11 01:58:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:38,817 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2024-10-11 01:58:38,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2024-10-11 01:58:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 01:58:38,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:38,818 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:38,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:39,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,28 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:39,019 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:39,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:39,019 INFO L85 PathProgramCache]: Analyzing trace with hash -271272933, now seen corresponding path program 26 times [2024-10-11 01:58:39,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:39,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679508013] [2024-10-11 01:58:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:39,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:39,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:39,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679508013] [2024-10-11 01:58:39,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679508013] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:39,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092787779] [2024-10-11 01:58:39,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:58:39,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:39,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:39,085 INFO L229 MonitoredProcess]: Starting monitored process 29 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 01:58:39,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-11 01:58:39,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:58:39,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:39,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 01:58:39,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:39,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:39,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092787779] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:39,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:39,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-11 01:58:39,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657811514] [2024-10-11 01:58:39,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:39,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 01:58:39,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 01:58:39,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-10-11 01:58:39,207 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:39,263 INFO L93 Difference]: Finished difference Result 154 states and 179 transitions. [2024-10-11 01:58:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 01:58:39,264 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:39,265 INFO L225 Difference]: With dead ends: 154 [2024-10-11 01:58:39,265 INFO L226 Difference]: Without dead ends: 149 [2024-10-11 01:58:39,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-10-11 01:58:39,265 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:39,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 88 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:39,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-11 01:58:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2024-10-11 01:58:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.178082191780822) internal successors, (172), 146 states have internal predecessors, (172), 0 states have call successors, (0), 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 01:58:39,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2024-10-11 01:58:39,291 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 28 [2024-10-11 01:58:39,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:39,291 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2024-10-11 01:58:39,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:58:39,292 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2024-10-11 01:58:39,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 01:58:39,292 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:39,292 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:39,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-10-11 01:58:39,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-11 01:58:39,493 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:39,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:39,493 INFO L85 PathProgramCache]: Analyzing trace with hash 356864972, now seen corresponding path program 27 times [2024-10-11 01:58:39,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:39,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757530847] [2024-10-11 01:58:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:39,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:39,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:39,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757530847] [2024-10-11 01:58:39,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757530847] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:39,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040981974] [2024-10-11 01:58:39,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:58:39,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:39,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:39,889 INFO L229 MonitoredProcess]: Starting monitored process 30 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 01:58:39,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-11 01:58:39,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 01:58:39,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:39,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-11 01:58:39,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:40,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:40,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040981974] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:40,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:40,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 32 [2024-10-11 01:58:40,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732813780] [2024-10-11 01:58:40,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:40,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-11 01:58:40,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:40,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-11 01:58:40,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2024-10-11 01:58:40,213 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 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 01:58:40,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:40,536 INFO L93 Difference]: Finished difference Result 181 states and 210 transitions. [2024-10-11 01:58:40,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 01:58:40,537 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 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 29 [2024-10-11 01:58:40,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:40,540 INFO L225 Difference]: With dead ends: 181 [2024-10-11 01:58:40,541 INFO L226 Difference]: Without dead ends: 173 [2024-10-11 01:58:40,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 01:58:40,542 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 57 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:40,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 588 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:58:40,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-10-11 01:58:40,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 155. [2024-10-11 01:58:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1753246753246753) internal successors, (181), 154 states have internal predecessors, (181), 0 states have call successors, (0), 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 01:58:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 181 transitions. [2024-10-11 01:58:40,579 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 181 transitions. Word has length 29 [2024-10-11 01:58:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:40,579 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 181 transitions. [2024-10-11 01:58:40,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 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 01:58:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 181 transitions. [2024-10-11 01:58:40,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 01:58:40,579 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:40,579 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:40,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:40,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:40,780 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:40,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1140515024, now seen corresponding path program 28 times [2024-10-11 01:58:40,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:40,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914006707] [2024-10-11 01:58:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:40,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:41,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:41,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914006707] [2024-10-11 01:58:41,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914006707] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:41,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739589784] [2024-10-11 01:58:41,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:58:41,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:41,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:41,032 INFO L229 MonitoredProcess]: Starting monitored process 31 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 01:58:41,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-11 01:58:41,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:58:41,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:41,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-11 01:58:41,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:41,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:41,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739589784] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:41,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:41,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-10-11 01:58:41,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567762439] [2024-10-11 01:58:41,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:41,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-11 01:58:41,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:41,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-11 01:58:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:58:41,349 INFO L87 Difference]: Start difference. First operand 155 states and 181 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 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 01:58:41,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:41,603 INFO L93 Difference]: Finished difference Result 168 states and 193 transitions. [2024-10-11 01:58:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 01:58:41,604 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 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 29 [2024-10-11 01:58:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:41,607 INFO L225 Difference]: With dead ends: 168 [2024-10-11 01:58:41,607 INFO L226 Difference]: Without dead ends: 147 [2024-10-11 01:58:41,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 01:58:41,608 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:41,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 516 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:58:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-11 01:58:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-10-11 01:58:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.178082191780822) internal successors, (172), 146 states have internal predecessors, (172), 0 states have call successors, (0), 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 01:58:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2024-10-11 01:58:41,632 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 29 [2024-10-11 01:58:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:41,632 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2024-10-11 01:58:41,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 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 01:58:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2024-10-11 01:58:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 01:58:41,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:41,633 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:41,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:41,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-11 01:58:41,838 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:41,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:41,839 INFO L85 PathProgramCache]: Analyzing trace with hash 209665996, now seen corresponding path program 29 times [2024-10-11 01:58:41,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:41,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322283748] [2024-10-11 01:58:41,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:41,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:58:42,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:42,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322283748] [2024-10-11 01:58:42,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322283748] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:42,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58171340] [2024-10-11 01:58:42,014 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:58:42,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:42,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:42,016 INFO L229 MonitoredProcess]: Starting monitored process 32 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 01:58:42,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-11 01:58:42,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 01:58:42,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:42,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 01:58:42,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:58:42,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:58:42,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58171340] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:42,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:42,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2024-10-11 01:58:42,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302606009] [2024-10-11 01:58:42,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:42,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 01:58:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 01:58:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2024-10-11 01:58:42,339 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 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 01:58:42,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:42,545 INFO L93 Difference]: Finished difference Result 167 states and 195 transitions. [2024-10-11 01:58:42,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 01:58:42,545 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 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 29 [2024-10-11 01:58:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:42,549 INFO L225 Difference]: With dead ends: 167 [2024-10-11 01:58:42,549 INFO L226 Difference]: Without dead ends: 162 [2024-10-11 01:58:42,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 01:58:42,550 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:42,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 349 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-10-11 01:58:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2024-10-11 01:58:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.1794871794871795) internal successors, (184), 156 states have internal predecessors, (184), 0 states have call successors, (0), 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 01:58:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2024-10-11 01:58:42,598 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 29 [2024-10-11 01:58:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:42,599 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2024-10-11 01:58:42,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 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 01:58:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2024-10-11 01:58:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-11 01:58:42,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:42,599 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:42,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:42,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-11 01:58:42,804 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:42,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:42,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1917604282, now seen corresponding path program 30 times [2024-10-11 01:58:42,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:42,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059332737] [2024-10-11 01:58:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:42,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:43,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:43,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059332737] [2024-10-11 01:58:43,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059332737] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:43,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557530340] [2024-10-11 01:58:43,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:58:43,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:43,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:43,021 INFO L229 MonitoredProcess]: Starting monitored process 33 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 01:58:43,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-11 01:58:43,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-11 01:58:43,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:43,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 01:58:43,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:43,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:43,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557530340] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:43,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:43,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-10-11 01:58:43,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025303027] [2024-10-11 01:58:43,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:43,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 01:58:43,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:43,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 01:58:43,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 01:58:43,707 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:58:44,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:44,156 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2024-10-11 01:58:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 01:58:44,156 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 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 30 [2024-10-11 01:58:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:44,157 INFO L225 Difference]: With dead ends: 221 [2024-10-11 01:58:44,157 INFO L226 Difference]: Without dead ends: 191 [2024-10-11 01:58:44,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=1659, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 01:58:44,158 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:44,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 282 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:58:44,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-11 01:58:44,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 172. [2024-10-11 01:58:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 171 states have internal predecessors, (202), 0 states have call successors, (0), 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 01:58:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 202 transitions. [2024-10-11 01:58:44,212 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 202 transitions. Word has length 30 [2024-10-11 01:58:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:44,212 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 202 transitions. [2024-10-11 01:58:44,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:58:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 202 transitions. [2024-10-11 01:58:44,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-11 01:58:44,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:44,213 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:44,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-10-11 01:58:44,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-11 01:58:44,414 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:44,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1155179155, now seen corresponding path program 31 times [2024-10-11 01:58:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767386612] [2024-10-11 01:58:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:44,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767386612] [2024-10-11 01:58:44,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767386612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:44,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372188789] [2024-10-11 01:58:44,689 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:58:44,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:44,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:44,690 INFO L229 MonitoredProcess]: Starting monitored process 34 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 01:58:44,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-11 01:58:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:44,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 01:58:44,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:45,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:45,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372188789] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:45,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:45,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-10-11 01:58:45,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670633595] [2024-10-11 01:58:45,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:45,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 01:58:45,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:45,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 01:58:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 01:58:45,269 INFO L87 Difference]: Start difference. First operand 172 states and 202 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:58:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:45,686 INFO L93 Difference]: Finished difference Result 190 states and 223 transitions. [2024-10-11 01:58:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 01:58:45,687 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 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 30 [2024-10-11 01:58:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:45,688 INFO L225 Difference]: With dead ends: 190 [2024-10-11 01:58:45,688 INFO L226 Difference]: Without dead ends: 175 [2024-10-11 01:58:45,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 01:58:45,689 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:45,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:58:45,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-10-11 01:58:45,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-10-11 01:58:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.1781609195402298) internal successors, (205), 174 states have internal predecessors, (205), 0 states have call successors, (0), 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 01:58:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 205 transitions. [2024-10-11 01:58:45,724 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 205 transitions. Word has length 30 [2024-10-11 01:58:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:45,724 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 205 transitions. [2024-10-11 01:58:45,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:58:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 205 transitions. [2024-10-11 01:58:45,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-11 01:58:45,725 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:45,725 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:45,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:45,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:45,926 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:45,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2061096389, now seen corresponding path program 32 times [2024-10-11 01:58:45,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:45,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555832513] [2024-10-11 01:58:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:45,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:46,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:46,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555832513] [2024-10-11 01:58:46,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555832513] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:46,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229872870] [2024-10-11 01:58:46,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:58:46,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:46,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:46,030 INFO L229 MonitoredProcess]: Starting monitored process 35 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 01:58:46,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-11 01:58:46,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:58:46,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:46,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 01:58:46,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:46,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:46,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229872870] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:46,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:46,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-10-11 01:58:46,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287901160] [2024-10-11 01:58:46,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:46,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 01:58:46,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:46,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 01:58:46,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-11 01:58:46,200 INFO L87 Difference]: Start difference. First operand 175 states and 205 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:58:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:46,337 INFO L93 Difference]: Finished difference Result 215 states and 254 transitions. [2024-10-11 01:58:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 01:58:46,337 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 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 30 [2024-10-11 01:58:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:46,338 INFO L225 Difference]: With dead ends: 215 [2024-10-11 01:58:46,338 INFO L226 Difference]: Without dead ends: 202 [2024-10-11 01:58:46,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-10-11 01:58:46,338 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:46,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 142 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-10-11 01:58:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2024-10-11 01:58:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.1938775510204083) internal successors, (234), 196 states have internal predecessors, (234), 0 states have call successors, (0), 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 01:58:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 234 transitions. [2024-10-11 01:58:46,383 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 234 transitions. Word has length 30 [2024-10-11 01:58:46,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:46,383 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 234 transitions. [2024-10-11 01:58:46,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:58:46,383 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 234 transitions. [2024-10-11 01:58:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-11 01:58:46,384 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:46,384 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:46,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:46,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-10-11 01:58:46,589 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:46,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:46,589 INFO L85 PathProgramCache]: Analyzing trace with hash -724850578, now seen corresponding path program 33 times [2024-10-11 01:58:46,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:46,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920805853] [2024-10-11 01:58:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:46,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:46,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920805853] [2024-10-11 01:58:46,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920805853] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724303651] [2024-10-11 01:58:46,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:58:46,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:46,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:46,704 INFO L229 MonitoredProcess]: Starting monitored process 36 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 01:58:46,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-11 01:58:46,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:58:46,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:46,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 01:58:46,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:46,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:58:46,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724303651] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:46,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:46,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-10-11 01:58:46,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543635416] [2024-10-11 01:58:46,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:46,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 01:58:46,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:46,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 01:58:46,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-11 01:58:46,861 INFO L87 Difference]: Start difference. First operand 197 states and 234 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:58:46,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:46,984 INFO L93 Difference]: Finished difference Result 318 states and 388 transitions. [2024-10-11 01:58:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 01:58:46,984 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 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 30 [2024-10-11 01:58:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:46,985 INFO L225 Difference]: With dead ends: 318 [2024-10-11 01:58:46,985 INFO L226 Difference]: Without dead ends: 235 [2024-10-11 01:58:46,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-10-11 01:58:46,986 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:46,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 135 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-10-11 01:58:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-10-11 01:58:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1923076923076923) internal successors, (279), 234 states have internal predecessors, (279), 0 states have call successors, (0), 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 01:58:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 279 transitions. [2024-10-11 01:58:47,030 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 279 transitions. Word has length 30 [2024-10-11 01:58:47,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:47,031 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 279 transitions. [2024-10-11 01:58:47,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:58:47,031 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 279 transitions. [2024-10-11 01:58:47,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 01:58:47,032 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:47,032 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:47,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-10-11 01:58:47,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:47,233 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:47,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2006090695, now seen corresponding path program 34 times [2024-10-11 01:58:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:47,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090128869] [2024-10-11 01:58:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:47,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:47,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090128869] [2024-10-11 01:58:47,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090128869] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:47,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359203621] [2024-10-11 01:58:47,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:58:47,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:47,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:47,491 INFO L229 MonitoredProcess]: Starting monitored process 37 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 01:58:47,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-11 01:58:47,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:58:47,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:47,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-11 01:58:47,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:47,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:47,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359203621] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:47,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:47,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 35 [2024-10-11 01:58:47,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139937203] [2024-10-11 01:58:47,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:47,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-11 01:58:47,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-11 01:58:47,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 01:58:47,882 INFO L87 Difference]: Start difference. First operand 235 states and 279 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:58:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:48,320 INFO L93 Difference]: Finished difference Result 276 states and 325 transitions. [2024-10-11 01:58:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 01:58:48,321 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 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 31 [2024-10-11 01:58:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:48,322 INFO L225 Difference]: With dead ends: 276 [2024-10-11 01:58:48,322 INFO L226 Difference]: Without dead ends: 268 [2024-10-11 01:58:48,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2024-10-11 01:58:48,323 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 66 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:48,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 776 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:58:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-10-11 01:58:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 243. [2024-10-11 01:58:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.1900826446280992) internal successors, (288), 242 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 01:58:48,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2024-10-11 01:58:48,377 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 31 [2024-10-11 01:58:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:48,377 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2024-10-11 01:58:48,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:58:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2024-10-11 01:58:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 01:58:48,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:48,378 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:48,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:48,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:48,582 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:48,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1115054649, now seen corresponding path program 35 times [2024-10-11 01:58:48,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:48,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029500439] [2024-10-11 01:58:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:48,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029500439] [2024-10-11 01:58:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029500439] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194851239] [2024-10-11 01:58:48,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:58:48,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:48,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:48,833 INFO L229 MonitoredProcess]: Starting monitored process 38 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 01:58:48,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-11 01:58:48,892 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 01:58:48,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:48,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-11 01:58:48,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:49,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:49,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194851239] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:49,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:49,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 33 [2024-10-11 01:58:49,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332102865] [2024-10-11 01:58:49,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:49,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 01:58:49,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 01:58:49,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 01:58:49,193 INFO L87 Difference]: Start difference. First operand 243 states and 288 transitions. Second operand has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:58:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:49,699 INFO L93 Difference]: Finished difference Result 257 states and 301 transitions. [2024-10-11 01:58:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 01:58:49,699 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 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 31 [2024-10-11 01:58:49,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:49,700 INFO L225 Difference]: With dead ends: 257 [2024-10-11 01:58:49,700 INFO L226 Difference]: Without dead ends: 235 [2024-10-11 01:58:49,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=1592, Unknown=0, NotChecked=0, Total=1722 [2024-10-11 01:58:49,701 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:49,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 636 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:58:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-10-11 01:58:49,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-10-11 01:58:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1923076923076923) internal successors, (279), 234 states have internal predecessors, (279), 0 states have call successors, (0), 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 01:58:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 279 transitions. [2024-10-11 01:58:49,745 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 279 transitions. Word has length 31 [2024-10-11 01:58:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:49,745 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 279 transitions. [2024-10-11 01:58:49,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:58:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 279 transitions. [2024-10-11 01:58:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 01:58:49,745 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:49,745 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:49,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:49,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-10-11 01:58:49,947 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:49,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:49,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1008538498, now seen corresponding path program 36 times [2024-10-11 01:58:49,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:49,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898839274] [2024-10-11 01:58:49,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:49,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 01:58:50,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898839274] [2024-10-11 01:58:50,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898839274] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665072935] [2024-10-11 01:58:50,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:58:50,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:50,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:50,080 INFO L229 MonitoredProcess]: Starting monitored process 39 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 01:58:50,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-11 01:58:50,160 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 01:58:50,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:50,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 01:58:50,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 01:58:50,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 01:58:50,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665072935] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:50,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:50,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-10-11 01:58:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54942705] [2024-10-11 01:58:50,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:50,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 01:58:50,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:50,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 01:58:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-10-11 01:58:50,488 INFO L87 Difference]: Start difference. First operand 235 states and 279 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 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 01:58:50,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:50,708 INFO L93 Difference]: Finished difference Result 298 states and 354 transitions. [2024-10-11 01:58:50,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 01:58:50,708 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 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 31 [2024-10-11 01:58:50,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:50,709 INFO L225 Difference]: With dead ends: 298 [2024-10-11 01:58:50,709 INFO L226 Difference]: Without dead ends: 255 [2024-10-11 01:58:50,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:58:50,710 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:50,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-10-11 01:58:50,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-10-11 01:58:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.1732283464566928) internal successors, (298), 254 states have internal predecessors, (298), 0 states have call successors, (0), 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 01:58:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 298 transitions. [2024-10-11 01:58:50,760 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 298 transitions. Word has length 31 [2024-10-11 01:58:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:50,760 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 298 transitions. [2024-10-11 01:58:50,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 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 01:58:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 298 transitions. [2024-10-11 01:58:50,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 01:58:50,761 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:50,761 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:50,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-10-11 01:58:50,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:50,961 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:50,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2143968199, now seen corresponding path program 37 times [2024-10-11 01:58:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:50,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49432698] [2024-10-11 01:58:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:50,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:58:51,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49432698] [2024-10-11 01:58:51,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49432698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154181787] [2024-10-11 01:58:51,186 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:58:51,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:51,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:51,188 INFO L229 MonitoredProcess]: Starting monitored process 40 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 01:58:51,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-11 01:58:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:51,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-11 01:58:51,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:58:51,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:58:51,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154181787] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:51,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:51,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 31 [2024-10-11 01:58:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924038783] [2024-10-11 01:58:51,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:51,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-11 01:58:51,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:51,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-11 01:58:51,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2024-10-11 01:58:51,591 INFO L87 Difference]: Start difference. First operand 255 states and 298 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:58:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:51,908 INFO L93 Difference]: Finished difference Result 285 states and 332 transitions. [2024-10-11 01:58:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 01:58:51,909 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 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 31 [2024-10-11 01:58:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:51,910 INFO L225 Difference]: With dead ends: 285 [2024-10-11 01:58:51,910 INFO L226 Difference]: Without dead ends: 262 [2024-10-11 01:58:51,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=1354, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 01:58:51,910 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:51,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 427 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:58:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-10-11 01:58:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 253. [2024-10-11 01:58:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.1785714285714286) internal successors, (297), 252 states have internal predecessors, (297), 0 states have call successors, (0), 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 01:58:51,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 297 transitions. [2024-10-11 01:58:51,958 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 297 transitions. Word has length 31 [2024-10-11 01:58:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:51,958 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 297 transitions. [2024-10-11 01:58:51,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:58:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 297 transitions. [2024-10-11 01:58:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 01:58:51,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:51,959 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:51,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:52,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,40 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:52,163 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:52,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:52,164 INFO L85 PathProgramCache]: Analyzing trace with hash -479131682, now seen corresponding path program 38 times [2024-10-11 01:58:52,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:52,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797030689] [2024-10-11 01:58:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:52,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 01:58:52,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797030689] [2024-10-11 01:58:52,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797030689] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493598424] [2024-10-11 01:58:52,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:58:52,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:52,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:52,276 INFO L229 MonitoredProcess]: Starting monitored process 41 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 01:58:52,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-11 01:58:52,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:58:52,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:52,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 01:58:52,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 01:58:52,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 01:58:52,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493598424] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:52,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:52,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-10-11 01:58:52,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690146977] [2024-10-11 01:58:52,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:52,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 01:58:52,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:52,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 01:58:52,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-10-11 01:58:52,604 INFO L87 Difference]: Start difference. First operand 253 states and 297 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 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 01:58:52,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:52,865 INFO L93 Difference]: Finished difference Result 276 states and 320 transitions. [2024-10-11 01:58:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 01:58:52,866 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 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 31 [2024-10-11 01:58:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:52,867 INFO L225 Difference]: With dead ends: 276 [2024-10-11 01:58:52,867 INFO L226 Difference]: Without dead ends: 253 [2024-10-11 01:58:52,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:58:52,868 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:52,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 262 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:52,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-10-11 01:58:52,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-10-11 01:58:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.1547619047619047) internal successors, (291), 252 states have internal predecessors, (291), 0 states have call successors, (0), 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 01:58:52,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 291 transitions. [2024-10-11 01:58:52,978 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 291 transitions. Word has length 31 [2024-10-11 01:58:52,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:52,978 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 291 transitions. [2024-10-11 01:58:52,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 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 01:58:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 291 transitions. [2024-10-11 01:58:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 01:58:52,979 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:52,982 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:52,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:53,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-10-11 01:58:53,183 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:53,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:53,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1680422637, now seen corresponding path program 39 times [2024-10-11 01:58:53,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:53,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730564078] [2024-10-11 01:58:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:53,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:53,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:53,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730564078] [2024-10-11 01:58:53,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730564078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:53,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072786637] [2024-10-11 01:58:53,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:58:53,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:53,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:53,532 INFO L229 MonitoredProcess]: Starting monitored process 42 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 01:58:53,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-11 01:58:53,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-11 01:58:53,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:53,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 01:58:53,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:53,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072786637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:54,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:54,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-10-11 01:58:54,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428217934] [2024-10-11 01:58:54,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:54,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-11 01:58:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-11 01:58:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 01:58:54,280 INFO L87 Difference]: Start difference. First operand 253 states and 291 transitions. Second operand has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:58:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:54,674 INFO L93 Difference]: Finished difference Result 358 states and 408 transitions. [2024-10-11 01:58:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 01:58:54,675 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 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 32 [2024-10-11 01:58:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:54,677 INFO L225 Difference]: With dead ends: 358 [2024-10-11 01:58:54,677 INFO L226 Difference]: Without dead ends: 324 [2024-10-11 01:58:54,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=300, Invalid=2250, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 01:58:54,678 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:54,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 284 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-10-11 01:58:54,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 281. [2024-10-11 01:58:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.1535714285714285) internal successors, (323), 280 states have internal predecessors, (323), 0 states have call successors, (0), 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 01:58:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 323 transitions. [2024-10-11 01:58:54,759 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 323 transitions. Word has length 32 [2024-10-11 01:58:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:54,759 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 323 transitions. [2024-10-11 01:58:54,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:58:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 323 transitions. [2024-10-11 01:58:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 01:58:54,760 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:54,760 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:54,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-10-11 01:58:54,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-10-11 01:58:54,963 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:54,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash 913416602, now seen corresponding path program 40 times [2024-10-11 01:58:54,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:54,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466114588] [2024-10-11 01:58:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:55,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:55,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466114588] [2024-10-11 01:58:55,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466114588] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:55,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212229853] [2024-10-11 01:58:55,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:58:55,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:55,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:55,195 INFO L229 MonitoredProcess]: Starting monitored process 43 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 01:58:55,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-11 01:58:55,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:58:55,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:55,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 01:58:55,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:55,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:58:55,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212229853] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:55,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:55,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 40 [2024-10-11 01:58:55,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454415289] [2024-10-11 01:58:55,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:55,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-11 01:58:55,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:55,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-11 01:58:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1438, Unknown=0, NotChecked=0, Total=1560 [2024-10-11 01:58:55,903 INFO L87 Difference]: Start difference. First operand 281 states and 323 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 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 01:58:56,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:56,550 INFO L93 Difference]: Finished difference Result 302 states and 348 transitions. [2024-10-11 01:58:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 01:58:56,553 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 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 32 [2024-10-11 01:58:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:56,555 INFO L225 Difference]: With dead ends: 302 [2024-10-11 01:58:56,555 INFO L226 Difference]: Without dead ends: 285 [2024-10-11 01:58:56,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=213, Invalid=2337, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 01:58:56,560 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:56,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 403 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:58:56,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-10-11 01:58:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-10-11 01:58:56,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.1514084507042253) internal successors, (327), 284 states have internal predecessors, (327), 0 states have call successors, (0), 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 01:58:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 327 transitions. [2024-10-11 01:58:56,668 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 327 transitions. Word has length 32 [2024-10-11 01:58:56,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:56,668 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 327 transitions. [2024-10-11 01:58:56,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 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 01:58:56,668 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 327 transitions. [2024-10-11 01:58:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 01:58:56,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:56,669 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:56,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-10-11 01:58:56,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-10-11 01:58:56,873 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:56,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:56,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1981187314, now seen corresponding path program 41 times [2024-10-11 01:58:56,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:56,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567182088] [2024-10-11 01:58:56,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:56,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:58:56,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:56,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567182088] [2024-10-11 01:58:56,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567182088] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:56,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605596535] [2024-10-11 01:58:56,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:58:56,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:56,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:56,972 INFO L229 MonitoredProcess]: Starting monitored process 44 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 01:58:56,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-10-11 01:58:57,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 01:58:57,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:57,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 01:58:57,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:58:57,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:58:57,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605596535] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:57,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:57,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-10-11 01:58:57,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91154231] [2024-10-11 01:58:57,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:57,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 01:58:57,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:57,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 01:58:57,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-10-11 01:58:57,186 INFO L87 Difference]: Start difference. First operand 285 states and 327 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:58:57,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:57,323 INFO L93 Difference]: Finished difference Result 345 states and 398 transitions. [2024-10-11 01:58:57,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 01:58:57,324 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 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 32 [2024-10-11 01:58:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:57,325 INFO L225 Difference]: With dead ends: 345 [2024-10-11 01:58:57,325 INFO L226 Difference]: Without dead ends: 273 [2024-10-11 01:58:57,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:58:57,325 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:57,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 98 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:58:57,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-10-11 01:58:57,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2024-10-11 01:58:57,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.1433823529411764) internal successors, (311), 272 states have internal predecessors, (311), 0 states have call successors, (0), 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 01:58:57,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 311 transitions. [2024-10-11 01:58:57,385 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 311 transitions. Word has length 32 [2024-10-11 01:58:57,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:57,385 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 311 transitions. [2024-10-11 01:58:57,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:58:57,386 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 311 transitions. [2024-10-11 01:58:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 01:58:57,386 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:57,386 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:57,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:57,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:57,588 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:57,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1058464599, now seen corresponding path program 42 times [2024-10-11 01:58:57,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:57,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346680028] [2024-10-11 01:58:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:57,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:58:57,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346680028] [2024-10-11 01:58:57,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346680028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:57,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861606216] [2024-10-11 01:58:57,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:58:57,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:57,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:57,672 INFO L229 MonitoredProcess]: Starting monitored process 45 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 01:58:57,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-10-11 01:58:57,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 01:58:57,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:57,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 01:58:57,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:58:57,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:58:57,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861606216] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:57,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:57,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-10-11 01:58:57,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775271750] [2024-10-11 01:58:57,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:57,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 01:58:57,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:57,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 01:58:57,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-10-11 01:58:57,845 INFO L87 Difference]: Start difference. First operand 273 states and 311 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:58:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:57,999 INFO L93 Difference]: Finished difference Result 284 states and 322 transitions. [2024-10-11 01:58:57,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 01:58:58,000 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 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 32 [2024-10-11 01:58:58,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:58,001 INFO L225 Difference]: With dead ends: 284 [2024-10-11 01:58:58,001 INFO L226 Difference]: Without dead ends: 279 [2024-10-11 01:58:58,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:58:58,002 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:58,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 159 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:58:58,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-10-11 01:58:58,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 274. [2024-10-11 01:58:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.1428571428571428) internal successors, (312), 273 states have internal predecessors, (312), 0 states have call successors, (0), 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 01:58:58,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 312 transitions. [2024-10-11 01:58:58,061 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 312 transitions. Word has length 32 [2024-10-11 01:58:58,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:58,061 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 312 transitions. [2024-10-11 01:58:58,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:58:58,061 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 312 transitions. [2024-10-11 01:58:58,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 01:58:58,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:58,062 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:58,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-10-11 01:58:58,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:58,265 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:58,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:58,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1990835628, now seen corresponding path program 43 times [2024-10-11 01:58:58,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:58,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394190652] [2024-10-11 01:58:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:58,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:58,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:58,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394190652] [2024-10-11 01:58:58,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394190652] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:58,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885482225] [2024-10-11 01:58:58,511 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:58:58,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:58,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:58,513 INFO L229 MonitoredProcess]: Starting monitored process 46 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 01:58:58,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-10-11 01:58:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:58,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-11 01:58:58,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:58:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:58,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:58:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:58:58,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885482225] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:58:58,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:58:58,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 38 [2024-10-11 01:58:58,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884238459] [2024-10-11 01:58:58,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:58:58,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-11 01:58:58,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:58:58,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-11 01:58:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1314, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 01:58:58,883 INFO L87 Difference]: Start difference. First operand 274 states and 312 transitions. Second operand has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:58:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:58:59,379 INFO L93 Difference]: Finished difference Result 318 states and 361 transitions. [2024-10-11 01:58:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 01:58:59,380 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 0 states have call successors, (0), 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 33 [2024-10-11 01:58:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:58:59,381 INFO L225 Difference]: With dead ends: 318 [2024-10-11 01:58:59,381 INFO L226 Difference]: Without dead ends: 310 [2024-10-11 01:58:59,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=2209, Unknown=0, NotChecked=0, Total=2352 [2024-10-11 01:58:59,381 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 74 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:58:59,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 827 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:58:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-10-11 01:58:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 282. [2024-10-11 01:58:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.1423487544483986) internal successors, (321), 281 states have internal predecessors, (321), 0 states have call successors, (0), 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 01:58:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 321 transitions. [2024-10-11 01:58:59,442 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 321 transitions. Word has length 33 [2024-10-11 01:58:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:58:59,443 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 321 transitions. [2024-10-11 01:58:59,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:58:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 321 transitions. [2024-10-11 01:58:59,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 01:58:59,443 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:58:59,444 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:58:59,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-10-11 01:58:59,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-10-11 01:58:59,644 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:58:59,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:58:59,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1192631280, now seen corresponding path program 44 times [2024-10-11 01:58:59,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:58:59,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078699196] [2024-10-11 01:58:59,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:58:59,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:58:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:58:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:58:59,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:58:59,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078699196] [2024-10-11 01:58:59,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078699196] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:58:59,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634465679] [2024-10-11 01:58:59,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:58:59,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:58:59,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:58:59,877 INFO L229 MonitoredProcess]: Starting monitored process 47 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 01:58:59,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-10-11 01:58:59,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:58:59,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:58:59,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-11 01:58:59,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:00,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:00,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634465679] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:00,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:00,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 36 [2024-10-11 01:59:00,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920444499] [2024-10-11 01:59:00,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:00,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-11 01:59:00,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:00,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-11 01:59:00,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 01:59:00,313 INFO L87 Difference]: Start difference. First operand 282 states and 321 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 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 01:59:00,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:00,794 INFO L93 Difference]: Finished difference Result 297 states and 335 transitions. [2024-10-11 01:59:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 01:59:00,795 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 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 33 [2024-10-11 01:59:00,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:00,796 INFO L225 Difference]: With dead ends: 297 [2024-10-11 01:59:00,796 INFO L226 Difference]: Without dead ends: 274 [2024-10-11 01:59:00,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=1929, Unknown=0, NotChecked=0, Total=2070 [2024-10-11 01:59:00,797 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 52 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:00,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 751 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:00,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-10-11 01:59:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2024-10-11 01:59:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.1428571428571428) internal successors, (312), 273 states have internal predecessors, (312), 0 states have call successors, (0), 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 01:59:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 312 transitions. [2024-10-11 01:59:00,857 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 312 transitions. Word has length 33 [2024-10-11 01:59:00,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:00,857 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 312 transitions. [2024-10-11 01:59:00,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 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 01:59:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 312 transitions. [2024-10-11 01:59:00,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 01:59:00,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:00,858 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:00,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-10-11 01:59:01,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:01,058 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:01,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:01,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1003734612, now seen corresponding path program 45 times [2024-10-11 01:59:01,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:01,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134534807] [2024-10-11 01:59:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:01,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:01,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:01,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134534807] [2024-10-11 01:59:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134534807] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:01,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540942839] [2024-10-11 01:59:01,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:59:01,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:01,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:01,277 INFO L229 MonitoredProcess]: Starting monitored process 48 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 01:59:01,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-10-11 01:59:01,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:59:01,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:01,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-11 01:59:01,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:01,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:01,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540942839] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:01,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:01,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 34 [2024-10-11 01:59:01,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045502658] [2024-10-11 01:59:01,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:01,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 01:59:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:01,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 01:59:01,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 01:59:01,662 INFO L87 Difference]: Start difference. First operand 274 states and 312 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:59:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:02,007 INFO L93 Difference]: Finished difference Result 288 states and 325 transitions. [2024-10-11 01:59:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 01:59:02,007 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 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 33 [2024-10-11 01:59:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:02,008 INFO L225 Difference]: With dead ends: 288 [2024-10-11 01:59:02,008 INFO L226 Difference]: Without dead ends: 264 [2024-10-11 01:59:02,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2024-10-11 01:59:02,009 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 37 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:02,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 547 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:59:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-10-11 01:59:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-10-11 01:59:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.144486692015209) internal successors, (301), 263 states have internal predecessors, (301), 0 states have call successors, (0), 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 01:59:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 301 transitions. [2024-10-11 01:59:02,067 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 301 transitions. Word has length 33 [2024-10-11 01:59:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:02,068 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 301 transitions. [2024-10-11 01:59:02,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:59:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 301 transitions. [2024-10-11 01:59:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 01:59:02,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:02,068 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:02,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:02,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:02,269 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:02,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1518143472, now seen corresponding path program 46 times [2024-10-11 01:59:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:02,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812121919] [2024-10-11 01:59:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:02,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:02,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:02,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812121919] [2024-10-11 01:59:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812121919] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:02,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603975132] [2024-10-11 01:59:02,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:59:02,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:02,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:02,483 INFO L229 MonitoredProcess]: Starting monitored process 49 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 01:59:02,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-10-11 01:59:02,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:59:02,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:02,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-11 01:59:02,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:02,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:02,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603975132] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:02,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:02,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 32 [2024-10-11 01:59:02,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778299843] [2024-10-11 01:59:02,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:02,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-11 01:59:02,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:02,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-11 01:59:02,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2024-10-11 01:59:02,917 INFO L87 Difference]: Start difference. First operand 264 states and 301 transitions. Second operand has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:59:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:03,167 INFO L93 Difference]: Finished difference Result 286 states and 326 transitions. [2024-10-11 01:59:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 01:59:03,168 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 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 33 [2024-10-11 01:59:03,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:03,169 INFO L225 Difference]: With dead ends: 286 [2024-10-11 01:59:03,169 INFO L226 Difference]: Without dead ends: 281 [2024-10-11 01:59:03,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=1423, Unknown=0, NotChecked=0, Total=1560 [2024-10-11 01:59:03,169 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:03,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 355 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:59:03,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-10-11 01:59:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 275. [2024-10-11 01:59:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.145985401459854) internal successors, (314), 274 states have internal predecessors, (314), 0 states have call successors, (0), 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 01:59:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 314 transitions. [2024-10-11 01:59:03,234 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 314 transitions. Word has length 33 [2024-10-11 01:59:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:03,234 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 314 transitions. [2024-10-11 01:59:03,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 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 01:59:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 314 transitions. [2024-10-11 01:59:03,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 01:59:03,235 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:03,235 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:03,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-10-11 01:59:03,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-10-11 01:59:03,440 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:03,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:03,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1031087066, now seen corresponding path program 47 times [2024-10-11 01:59:03,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:03,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71853595] [2024-10-11 01:59:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:03,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:03,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71853595] [2024-10-11 01:59:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71853595] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:03,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8174921] [2024-10-11 01:59:03,641 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:59:03,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:03,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:03,642 INFO L229 MonitoredProcess]: Starting monitored process 50 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 01:59:03,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-10-11 01:59:03,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-11 01:59:03,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:03,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 01:59:03,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:04,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:04,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8174921] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:04,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:04,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2024-10-11 01:59:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160808942] [2024-10-11 01:59:04,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:04,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-11 01:59:04,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:04,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-11 01:59:04,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 01:59:04,473 INFO L87 Difference]: Start difference. First operand 275 states and 314 transitions. Second operand has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 0 states have call successors, (0), 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 01:59:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:05,119 INFO L93 Difference]: Finished difference Result 392 states and 443 transitions. [2024-10-11 01:59:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 01:59:05,120 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 0 states have call successors, (0), 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 34 [2024-10-11 01:59:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:05,121 INFO L225 Difference]: With dead ends: 392 [2024-10-11 01:59:05,121 INFO L226 Difference]: Without dead ends: 356 [2024-10-11 01:59:05,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=366, Invalid=2940, Unknown=0, NotChecked=0, Total=3306 [2024-10-11 01:59:05,122 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:05,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 353 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:59:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-10-11 01:59:05,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 304. [2024-10-11 01:59:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.1452145214521452) internal successors, (347), 303 states have internal predecessors, (347), 0 states have call successors, (0), 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 01:59:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 347 transitions. [2024-10-11 01:59:05,193 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 347 transitions. Word has length 34 [2024-10-11 01:59:05,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:05,193 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 347 transitions. [2024-10-11 01:59:05,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 0 states have call successors, (0), 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 01:59:05,193 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 347 transitions. [2024-10-11 01:59:05,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 01:59:05,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:05,194 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:05,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-10-11 01:59:05,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-10-11 01:59:05,395 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:05,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:05,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1271263539, now seen corresponding path program 48 times [2024-10-11 01:59:05,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:05,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176048925] [2024-10-11 01:59:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:05,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:05,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:05,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176048925] [2024-10-11 01:59:05,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176048925] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:05,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529155158] [2024-10-11 01:59:05,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:59:05,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:05,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:05,683 INFO L229 MonitoredProcess]: Starting monitored process 51 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 01:59:05,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-10-11 01:59:05,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-11 01:59:05,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:05,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 01:59:05,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:06,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:06,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529155158] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:06,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:06,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2024-10-11 01:59:06,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219552349] [2024-10-11 01:59:06,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:06,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-11 01:59:06,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:06,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-11 01:59:06,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2024-10-11 01:59:06,572 INFO L87 Difference]: Start difference. First operand 304 states and 347 transitions. Second operand has 45 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 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 01:59:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:07,369 INFO L93 Difference]: Finished difference Result 326 states and 373 transitions. [2024-10-11 01:59:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 01:59:07,369 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 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 34 [2024-10-11 01:59:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:07,371 INFO L225 Difference]: With dead ends: 326 [2024-10-11 01:59:07,371 INFO L226 Difference]: Without dead ends: 308 [2024-10-11 01:59:07,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 35 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=252, Invalid=3054, Unknown=0, NotChecked=0, Total=3306 [2024-10-11 01:59:07,371 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:07,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 388 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:07,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-10-11 01:59:07,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2024-10-11 01:59:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.1433224755700326) internal successors, (351), 307 states have internal predecessors, (351), 0 states have call successors, (0), 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 01:59:07,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 351 transitions. [2024-10-11 01:59:07,446 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 351 transitions. Word has length 34 [2024-10-11 01:59:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:07,447 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 351 transitions. [2024-10-11 01:59:07,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 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 01:59:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 351 transitions. [2024-10-11 01:59:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 01:59:07,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:07,448 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:07,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:07,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-10-11 01:59:07,652 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:07,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash 211384951, now seen corresponding path program 49 times [2024-10-11 01:59:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:07,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472302962] [2024-10-11 01:59:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:07,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:59:07,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:07,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472302962] [2024-10-11 01:59:07,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472302962] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:07,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846965520] [2024-10-11 01:59:07,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:59:07,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:07,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:07,728 INFO L229 MonitoredProcess]: Starting monitored process 52 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 01:59:07,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-10-11 01:59:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:07,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 01:59:07,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:59:07,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:59:07,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846965520] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:07,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:07,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-10-11 01:59:07,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002543136] [2024-10-11 01:59:07,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:07,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 01:59:07,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:07,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 01:59:07,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-10-11 01:59:07,911 INFO L87 Difference]: Start difference. First operand 308 states and 351 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 01:59:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:08,138 INFO L93 Difference]: Finished difference Result 359 states and 413 transitions. [2024-10-11 01:59:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 01:59:08,139 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 34 [2024-10-11 01:59:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:08,140 INFO L225 Difference]: With dead ends: 359 [2024-10-11 01:59:08,140 INFO L226 Difference]: Without dead ends: 345 [2024-10-11 01:59:08,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-10-11 01:59:08,141 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:08,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 150 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:59:08,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-10-11 01:59:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 336. [2024-10-11 01:59:08,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.1582089552238806) internal successors, (388), 335 states have internal predecessors, (388), 0 states have call successors, (0), 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 01:59:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 388 transitions. [2024-10-11 01:59:08,223 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 388 transitions. Word has length 34 [2024-10-11 01:59:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:08,224 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 388 transitions. [2024-10-11 01:59:08,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 01:59:08,224 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 388 transitions. [2024-10-11 01:59:08,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 01:59:08,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:08,224 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:08,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:08,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-10-11 01:59:08,425 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:08,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash -48686258, now seen corresponding path program 50 times [2024-10-11 01:59:08,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:08,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186318776] [2024-10-11 01:59:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:08,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:59:08,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:08,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186318776] [2024-10-11 01:59:08,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186318776] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851778540] [2024-10-11 01:59:08,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:59:08,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:08,499 INFO L229 MonitoredProcess]: Starting monitored process 53 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 01:59:08,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-11 01:59:08,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:59:08,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:08,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 01:59:08,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:59:08,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:59:08,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851778540] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:08,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:08,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-10-11 01:59:08,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186380724] [2024-10-11 01:59:08,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:08,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 01:59:08,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:08,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 01:59:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-10-11 01:59:08,675 INFO L87 Difference]: Start difference. First operand 336 states and 388 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 01:59:08,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:08,894 INFO L93 Difference]: Finished difference Result 509 states and 604 transitions. [2024-10-11 01:59:08,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 01:59:08,895 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 34 [2024-10-11 01:59:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:08,896 INFO L225 Difference]: With dead ends: 509 [2024-10-11 01:59:08,896 INFO L226 Difference]: Without dead ends: 394 [2024-10-11 01:59:08,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-10-11 01:59:08,897 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:08,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 145 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:59:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-10-11 01:59:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2024-10-11 01:59:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.1577608142493638) internal successors, (455), 393 states have internal predecessors, (455), 0 states have call successors, (0), 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 01:59:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 455 transitions. [2024-10-11 01:59:08,993 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 455 transitions. Word has length 34 [2024-10-11 01:59:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:08,994 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 455 transitions. [2024-10-11 01:59:08,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 01:59:08,994 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 455 transitions. [2024-10-11 01:59:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 01:59:08,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:08,994 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:09,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:09,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-10-11 01:59:09,199 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:09,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:09,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1309739303, now seen corresponding path program 51 times [2024-10-11 01:59:09,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:09,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922855860] [2024-10-11 01:59:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:09,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:59:09,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:09,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922855860] [2024-10-11 01:59:09,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922855860] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:09,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754424293] [2024-10-11 01:59:09,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:59:09,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:09,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:09,603 INFO L229 MonitoredProcess]: Starting monitored process 54 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 01:59:09,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-10-11 01:59:09,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-11 01:59:09,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:09,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-11 01:59:09,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:59:10,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:59:10,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754424293] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:10,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:10,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 41 [2024-10-11 01:59:10,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774481951] [2024-10-11 01:59:10,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:10,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-11 01:59:10,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:10,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-11 01:59:10,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1541, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 01:59:10,204 INFO L87 Difference]: Start difference. First operand 394 states and 455 transitions. Second operand has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:59:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:10,804 INFO L93 Difference]: Finished difference Result 446 states and 513 transitions. [2024-10-11 01:59:10,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 01:59:10,805 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 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 35 [2024-10-11 01:59:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:10,808 INFO L225 Difference]: With dead ends: 446 [2024-10-11 01:59:10,808 INFO L226 Difference]: Without dead ends: 438 [2024-10-11 01:59:10,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=2602, Unknown=0, NotChecked=0, Total=2756 [2024-10-11 01:59:10,808 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 81 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:10,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1094 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-10-11 01:59:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 402. [2024-10-11 01:59:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.1571072319201996) internal successors, (464), 401 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 01:59:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 464 transitions. [2024-10-11 01:59:10,911 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 464 transitions. Word has length 35 [2024-10-11 01:59:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:10,911 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 464 transitions. [2024-10-11 01:59:10,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:59:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 464 transitions. [2024-10-11 01:59:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 01:59:10,912 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:10,912 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:10,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:11,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-10-11 01:59:11,112 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:11,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2112286503, now seen corresponding path program 52 times [2024-10-11 01:59:11,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:11,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173974869] [2024-10-11 01:59:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:11,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:11,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:11,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173974869] [2024-10-11 01:59:11,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173974869] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:11,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050675940] [2024-10-11 01:59:11,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:59:11,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:11,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:11,370 INFO L229 MonitoredProcess]: Starting monitored process 55 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 01:59:11,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-10-11 01:59:11,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:59:11,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:11,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-11 01:59:11,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:11,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:11,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050675940] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:11,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:11,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 39 [2024-10-11 01:59:11,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730371219] [2024-10-11 01:59:11,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:11,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-11 01:59:11,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:11,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-11 01:59:11,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1384, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 01:59:11,768 INFO L87 Difference]: Start difference. First operand 402 states and 464 transitions. Second operand has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:59:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:12,251 INFO L93 Difference]: Finished difference Result 418 states and 479 transitions. [2024-10-11 01:59:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 01:59:12,252 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 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 35 [2024-10-11 01:59:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:12,253 INFO L225 Difference]: With dead ends: 418 [2024-10-11 01:59:12,253 INFO L226 Difference]: Without dead ends: 394 [2024-10-11 01:59:12,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=2298, Unknown=0, NotChecked=0, Total=2450 [2024-10-11 01:59:12,254 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 61 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:12,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 838 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-10-11 01:59:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2024-10-11 01:59:12,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.1577608142493638) internal successors, (455), 393 states have internal predecessors, (455), 0 states have call successors, (0), 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 01:59:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 455 transitions. [2024-10-11 01:59:12,359 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 455 transitions. Word has length 35 [2024-10-11 01:59:12,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:12,360 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 455 transitions. [2024-10-11 01:59:12,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:59:12,360 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 455 transitions. [2024-10-11 01:59:12,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 01:59:12,360 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:12,361 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:12,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-10-11 01:59:12,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:12,566 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:12,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:12,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1988186407, now seen corresponding path program 53 times [2024-10-11 01:59:12,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:12,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417022028] [2024-10-11 01:59:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:12,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:12,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417022028] [2024-10-11 01:59:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417022028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074212326] [2024-10-11 01:59:12,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:59:12,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:12,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:12,782 INFO L229 MonitoredProcess]: Starting monitored process 56 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 01:59:12,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-10-11 01:59:12,844 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 01:59:12,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:12,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-11 01:59:12,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:13,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:13,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074212326] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:13,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:13,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 37 [2024-10-11 01:59:13,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076680464] [2024-10-11 01:59:13,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:13,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-11 01:59:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:13,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-11 01:59:13,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2024-10-11 01:59:13,235 INFO L87 Difference]: Start difference. First operand 394 states and 455 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:59:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:13,730 INFO L93 Difference]: Finished difference Result 409 states and 469 transitions. [2024-10-11 01:59:13,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 01:59:13,730 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 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 35 [2024-10-11 01:59:13,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:13,732 INFO L225 Difference]: With dead ends: 409 [2024-10-11 01:59:13,732 INFO L226 Difference]: Without dead ends: 384 [2024-10-11 01:59:13,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=2012, Unknown=0, NotChecked=0, Total=2162 [2024-10-11 01:59:13,732 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:13,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 728 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-10-11 01:59:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-10-11 01:59:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.1592689295039165) internal successors, (444), 383 states have internal predecessors, (444), 0 states have call successors, (0), 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 01:59:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 444 transitions. [2024-10-11 01:59:13,829 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 444 transitions. Word has length 35 [2024-10-11 01:59:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:13,829 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 444 transitions. [2024-10-11 01:59:13,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:59:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 444 transitions. [2024-10-11 01:59:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 01:59:13,829 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:13,830 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:13,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:14,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:14,034 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:14,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:14,034 INFO L85 PathProgramCache]: Analyzing trace with hash 915980382, now seen corresponding path program 54 times [2024-10-11 01:59:14,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:14,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258194119] [2024-10-11 01:59:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:14,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 01:59:14,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:14,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258194119] [2024-10-11 01:59:14,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258194119] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:14,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800120851] [2024-10-11 01:59:14,196 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:59:14,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:14,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:14,197 INFO L229 MonitoredProcess]: Starting monitored process 57 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 01:59:14,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-10-11 01:59:14,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-11 01:59:14,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:14,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 01:59:14,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 01:59:14,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 01:59:14,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800120851] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:14,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:14,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-10-11 01:59:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343682358] [2024-10-11 01:59:14,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:14,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-11 01:59:14,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-11 01:59:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:59:14,638 INFO L87 Difference]: Start difference. First operand 384 states and 444 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 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 01:59:14,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:14,976 INFO L93 Difference]: Finished difference Result 472 states and 548 transitions. [2024-10-11 01:59:14,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 01:59:14,977 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 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 35 [2024-10-11 01:59:14,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:14,979 INFO L225 Difference]: With dead ends: 472 [2024-10-11 01:59:14,979 INFO L226 Difference]: Without dead ends: 420 [2024-10-11 01:59:14,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 01:59:14,980 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:14,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 240 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:59:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-10-11 01:59:15,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2024-10-11 01:59:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.1431980906921242) internal successors, (479), 419 states have internal predecessors, (479), 0 states have call successors, (0), 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 01:59:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 479 transitions. [2024-10-11 01:59:15,092 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 479 transitions. Word has length 35 [2024-10-11 01:59:15,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:15,092 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 479 transitions. [2024-10-11 01:59:15,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 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 01:59:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 479 transitions. [2024-10-11 01:59:15,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 01:59:15,093 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:15,093 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:15,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:15,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-10-11 01:59:15,294 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:15,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1695635673, now seen corresponding path program 55 times [2024-10-11 01:59:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:15,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717057795] [2024-10-11 01:59:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:15,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:15,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:15,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717057795] [2024-10-11 01:59:15,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717057795] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:15,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784498396] [2024-10-11 01:59:15,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:59:15,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:15,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:15,515 INFO L229 MonitoredProcess]: Starting monitored process 58 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 01:59:15,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-10-11 01:59:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:15,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-11 01:59:15,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:15,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:16,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784498396] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:16,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:16,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 35 [2024-10-11 01:59:16,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643108591] [2024-10-11 01:59:16,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:16,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-11 01:59:16,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-11 01:59:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 01:59:16,098 INFO L87 Difference]: Start difference. First operand 420 states and 479 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 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 01:59:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:16,508 INFO L93 Difference]: Finished difference Result 453 states and 516 transitions. [2024-10-11 01:59:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 01:59:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 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 35 [2024-10-11 01:59:16,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:16,510 INFO L225 Difference]: With dead ends: 453 [2024-10-11 01:59:16,510 INFO L226 Difference]: Without dead ends: 427 [2024-10-11 01:59:16,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=1744, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 01:59:16,511 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:16,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 425 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:59:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-10-11 01:59:16,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 417. [2024-10-11 01:59:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.1466346153846154) internal successors, (477), 416 states have internal predecessors, (477), 0 states have call successors, (0), 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 01:59:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 477 transitions. [2024-10-11 01:59:16,673 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 477 transitions. Word has length 35 [2024-10-11 01:59:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:16,673 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 477 transitions. [2024-10-11 01:59:16,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 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 01:59:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 477 transitions. [2024-10-11 01:59:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 01:59:16,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:16,674 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:16,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-10-11 01:59:16,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:16,875 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:16,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1914782398, now seen corresponding path program 56 times [2024-10-11 01:59:16,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:16,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055084598] [2024-10-11 01:59:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:16,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 01:59:17,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:17,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055084598] [2024-10-11 01:59:17,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055084598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:17,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78525808] [2024-10-11 01:59:17,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:59:17,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:17,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:17,012 INFO L229 MonitoredProcess]: Starting monitored process 59 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 01:59:17,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-10-11 01:59:17,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:59:17,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:17,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 01:59:17,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 01:59:17,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 01:59:17,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78525808] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:17,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:17,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-10-11 01:59:17,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900337106] [2024-10-11 01:59:17,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:17,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-11 01:59:17,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-11 01:59:17,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:59:17,458 INFO L87 Difference]: Start difference. First operand 417 states and 477 transitions. Second operand has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:59:17,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:17,846 INFO L93 Difference]: Finished difference Result 445 states and 505 transitions. [2024-10-11 01:59:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 01:59:17,847 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 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 35 [2024-10-11 01:59:17,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:17,848 INFO L225 Difference]: With dead ends: 445 [2024-10-11 01:59:17,848 INFO L226 Difference]: Without dead ends: 417 [2024-10-11 01:59:17,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2024-10-11 01:59:17,849 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:17,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 355 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:59:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-10-11 01:59:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2024-10-11 01:59:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.1274038461538463) internal successors, (469), 416 states have internal predecessors, (469), 0 states have call successors, (0), 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 01:59:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 469 transitions. [2024-10-11 01:59:17,956 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 469 transitions. Word has length 35 [2024-10-11 01:59:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:17,956 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 469 transitions. [2024-10-11 01:59:17,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 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 01:59:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 469 transitions. [2024-10-11 01:59:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 01:59:17,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:17,961 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:17,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-10-11 01:59:18,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-10-11 01:59:18,161 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:18,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:18,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1792479309, now seen corresponding path program 57 times [2024-10-11 01:59:18,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:18,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443132163] [2024-10-11 01:59:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:18,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:18,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443132163] [2024-10-11 01:59:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443132163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064851497] [2024-10-11 01:59:18,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:59:18,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:18,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:18,411 INFO L229 MonitoredProcess]: Starting monitored process 60 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 01:59:18,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-10-11 01:59:18,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-11 01:59:18,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:18,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 01:59:18,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:18,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:19,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064851497] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:19,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:19,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-10-11 01:59:19,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992865341] [2024-10-11 01:59:19,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:19,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-11 01:59:19,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:19,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-11 01:59:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2217, Unknown=0, NotChecked=0, Total=2352 [2024-10-11 01:59:19,360 INFO L87 Difference]: Start difference. First operand 417 states and 469 transitions. Second operand has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:59:20,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:20,166 INFO L93 Difference]: Finished difference Result 597 states and 664 transitions. [2024-10-11 01:59:20,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 01:59:20,166 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 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 36 [2024-10-11 01:59:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:20,172 INFO L225 Difference]: With dead ends: 597 [2024-10-11 01:59:20,172 INFO L226 Difference]: Without dead ends: 557 [2024-10-11 01:59:20,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=443, Invalid=3717, Unknown=0, NotChecked=0, Total=4160 [2024-10-11 01:59:20,174 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:20,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 371 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:59:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-10-11 01:59:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 461. [2024-10-11 01:59:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.126086956521739) internal successors, (518), 460 states have internal predecessors, (518), 0 states have call successors, (0), 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 01:59:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 518 transitions. [2024-10-11 01:59:20,311 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 518 transitions. Word has length 36 [2024-10-11 01:59:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:20,311 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 518 transitions. [2024-10-11 01:59:20,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:59:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 518 transitions. [2024-10-11 01:59:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 01:59:20,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:20,312 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:20,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:20,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:20,517 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:20,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash -860912710, now seen corresponding path program 58 times [2024-10-11 01:59:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822004207] [2024-10-11 01:59:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:20,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:20,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:20,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822004207] [2024-10-11 01:59:20,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822004207] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:20,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20005712] [2024-10-11 01:59:20,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:59:20,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:20,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:20,763 INFO L229 MonitoredProcess]: Starting monitored process 61 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 01:59:20,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-10-11 01:59:20,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:59:20,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:20,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 01:59:20,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:21,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:21,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20005712] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:21,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:21,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-10-11 01:59:21,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277977140] [2024-10-11 01:59:21,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:21,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-11 01:59:21,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-11 01:59:21,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2218, Unknown=0, NotChecked=0, Total=2352 [2024-10-11 01:59:21,827 INFO L87 Difference]: Start difference. First operand 461 states and 518 transitions. Second operand has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:59:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:22,962 INFO L93 Difference]: Finished difference Result 486 states and 548 transitions. [2024-10-11 01:59:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 01:59:22,963 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 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 36 [2024-10-11 01:59:22,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:22,964 INFO L225 Difference]: With dead ends: 486 [2024-10-11 01:59:22,964 INFO L226 Difference]: Without dead ends: 466 [2024-10-11 01:59:22,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 35 SyntacticMatches, 9 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=273, Invalid=3759, Unknown=0, NotChecked=0, Total=4032 [2024-10-11 01:59:22,965 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:22,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 594 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:59:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-10-11 01:59:23,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2024-10-11 01:59:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.124731182795699) internal successors, (523), 465 states have internal predecessors, (523), 0 states have call successors, (0), 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 01:59:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 523 transitions. [2024-10-11 01:59:23,096 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 523 transitions. Word has length 36 [2024-10-11 01:59:23,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:23,096 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 523 transitions. [2024-10-11 01:59:23,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 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 01:59:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 523 transitions. [2024-10-11 01:59:23,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 01:59:23,097 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:23,097 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:23,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:23,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:23,298 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:23,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1653966574, now seen corresponding path program 59 times [2024-10-11 01:59:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:23,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991930607] [2024-10-11 01:59:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:23,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:23,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991930607] [2024-10-11 01:59:23,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991930607] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530241947] [2024-10-11 01:59:23,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:59:23,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:23,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:23,391 INFO L229 MonitoredProcess]: Starting monitored process 62 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 01:59:23,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-10-11 01:59:23,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 01:59:23,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:23,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:59:23,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:23,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:23,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530241947] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:23,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:23,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-10-11 01:59:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871214264] [2024-10-11 01:59:23,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:23,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 01:59:23,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:23,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 01:59:23,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2024-10-11 01:59:23,586 INFO L87 Difference]: Start difference. First operand 466 states and 523 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 01:59:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:23,824 INFO L93 Difference]: Finished difference Result 552 states and 624 transitions. [2024-10-11 01:59:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 01:59:23,825 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 36 [2024-10-11 01:59:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:23,826 INFO L225 Difference]: With dead ends: 552 [2024-10-11 01:59:23,830 INFO L226 Difference]: Without dead ends: 454 [2024-10-11 01:59:23,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:59:23,831 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 52 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:23,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 119 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:59:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-10-11 01:59:23,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2024-10-11 01:59:23,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.119205298013245) internal successors, (507), 453 states have internal predecessors, (507), 0 states have call successors, (0), 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 01:59:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 507 transitions. [2024-10-11 01:59:23,984 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 507 transitions. Word has length 36 [2024-10-11 01:59:23,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:23,985 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 507 transitions. [2024-10-11 01:59:23,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 01:59:23,986 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 507 transitions. [2024-10-11 01:59:23,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 01:59:23,986 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:23,986 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:24,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-10-11 01:59:24,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-10-11 01:59:24,187 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:24,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1984619611, now seen corresponding path program 60 times [2024-10-11 01:59:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940962965] [2024-10-11 01:59:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:24,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:24,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940962965] [2024-10-11 01:59:24,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940962965] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:24,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371176575] [2024-10-11 01:59:24,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:59:24,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:24,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:24,282 INFO L229 MonitoredProcess]: Starting monitored process 63 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 01:59:24,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-10-11 01:59:24,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-11 01:59:24,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:24,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:59:24,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:24,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:24,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371176575] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:24,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:24,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-10-11 01:59:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092955295] [2024-10-11 01:59:24,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:24,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 01:59:24,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 01:59:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2024-10-11 01:59:24,498 INFO L87 Difference]: Start difference. First operand 454 states and 507 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 01:59:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:24,768 INFO L93 Difference]: Finished difference Result 469 states and 522 transitions. [2024-10-11 01:59:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 01:59:24,768 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 36 [2024-10-11 01:59:24,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:24,770 INFO L225 Difference]: With dead ends: 469 [2024-10-11 01:59:24,770 INFO L226 Difference]: Without dead ends: 464 [2024-10-11 01:59:24,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:59:24,771 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:24,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 189 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:59:24,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-10-11 01:59:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 455. [2024-10-11 01:59:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.118942731277533) internal successors, (508), 454 states have internal predecessors, (508), 0 states have call successors, (0), 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 01:59:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 508 transitions. [2024-10-11 01:59:24,902 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 508 transitions. Word has length 36 [2024-10-11 01:59:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:24,902 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 508 transitions. [2024-10-11 01:59:24,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 01:59:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 508 transitions. [2024-10-11 01:59:24,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 01:59:24,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:24,903 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:24,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:25,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-10-11 01:59:25,107 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:25,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:25,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1473765492, now seen corresponding path program 61 times [2024-10-11 01:59:25,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:25,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160879212] [2024-10-11 01:59:25,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:25,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:59:25,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:25,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160879212] [2024-10-11 01:59:25,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160879212] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:25,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498618515] [2024-10-11 01:59:25,475 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:59:25,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:25,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:25,476 INFO L229 MonitoredProcess]: Starting monitored process 64 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 01:59:25,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-10-11 01:59:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:25,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-11 01:59:25,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:59:25,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:59:26,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498618515] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:26,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:26,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2024-10-11 01:59:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318280695] [2024-10-11 01:59:26,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:26,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-11 01:59:26,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-11 01:59:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1786, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 01:59:26,004 INFO L87 Difference]: Start difference. First operand 455 states and 508 transitions. Second operand has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 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 01:59:26,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:26,672 INFO L93 Difference]: Finished difference Result 510 states and 569 transitions. [2024-10-11 01:59:26,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-11 01:59:26,673 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 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 37 [2024-10-11 01:59:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:26,674 INFO L225 Difference]: With dead ends: 510 [2024-10-11 01:59:26,674 INFO L226 Difference]: Without dead ends: 502 [2024-10-11 01:59:26,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=3027, Unknown=0, NotChecked=0, Total=3192 [2024-10-11 01:59:26,675 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 89 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:26,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1194 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:59:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-10-11 01:59:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 463. [2024-10-11 01:59:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.119047619047619) internal successors, (517), 462 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 01:59:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 517 transitions. [2024-10-11 01:59:26,814 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 517 transitions. Word has length 37 [2024-10-11 01:59:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:26,814 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 517 transitions. [2024-10-11 01:59:26,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 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 01:59:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 517 transitions. [2024-10-11 01:59:26,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 01:59:26,815 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:26,815 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:26,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:27,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:27,016 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:27,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:27,016 INFO L85 PathProgramCache]: Analyzing trace with hash -852229904, now seen corresponding path program 62 times [2024-10-11 01:59:27,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:27,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45867077] [2024-10-11 01:59:27,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:27,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:27,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45867077] [2024-10-11 01:59:27,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45867077] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926846] [2024-10-11 01:59:27,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:59:27,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:27,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:27,343 INFO L229 MonitoredProcess]: Starting monitored process 65 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 01:59:27,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-10-11 01:59:27,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:59:27,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:27,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-11 01:59:27,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:27,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:27,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926846] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:27,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:27,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 42 [2024-10-11 01:59:27,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571742009] [2024-10-11 01:59:27,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:27,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-11 01:59:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:27,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-11 01:59:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2024-10-11 01:59:27,841 INFO L87 Difference]: Start difference. First operand 463 states and 517 transitions. Second operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:59:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:28,548 INFO L93 Difference]: Finished difference Result 480 states and 533 transitions. [2024-10-11 01:59:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 01:59:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 0 states have call successors, (0), 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 37 [2024-10-11 01:59:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:28,550 INFO L225 Difference]: With dead ends: 480 [2024-10-11 01:59:28,550 INFO L226 Difference]: Without dead ends: 455 [2024-10-11 01:59:28,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=2699, Unknown=0, NotChecked=0, Total=2862 [2024-10-11 01:59:28,551 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 68 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:28,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1163 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:59:28,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-10-11 01:59:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2024-10-11 01:59:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.118942731277533) internal successors, (508), 454 states have internal predecessors, (508), 0 states have call successors, (0), 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 01:59:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 508 transitions. [2024-10-11 01:59:28,685 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 508 transitions. Word has length 37 [2024-10-11 01:59:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:28,685 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 508 transitions. [2024-10-11 01:59:28,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:59:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 508 transitions. [2024-10-11 01:59:28,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 01:59:28,686 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:28,686 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:28,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-10-11 01:59:28,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:28,887 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:28,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash 885730188, now seen corresponding path program 63 times [2024-10-11 01:59:28,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:28,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028688324] [2024-10-11 01:59:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:28,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:29,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:29,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028688324] [2024-10-11 01:59:29,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028688324] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:29,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012915610] [2024-10-11 01:59:29,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:59:29,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:29,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:29,164 INFO L229 MonitoredProcess]: Starting monitored process 66 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 01:59:29,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-10-11 01:59:29,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 01:59:29,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:29,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-11 01:59:29,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:29,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:29,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012915610] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:29,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:29,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 40 [2024-10-11 01:59:29,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304946175] [2024-10-11 01:59:29,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:29,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-11 01:59:29,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:29,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-11 01:59:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1456, Unknown=0, NotChecked=0, Total=1560 [2024-10-11 01:59:29,656 INFO L87 Difference]: Start difference. First operand 455 states and 508 transitions. Second operand has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:59:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:30,212 INFO L93 Difference]: Finished difference Result 471 states and 523 transitions. [2024-10-11 01:59:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 01:59:30,213 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 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 37 [2024-10-11 01:59:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:30,214 INFO L225 Difference]: With dead ends: 471 [2024-10-11 01:59:30,214 INFO L226 Difference]: Without dead ends: 445 [2024-10-11 01:59:30,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=2389, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 01:59:30,215 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 55 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:30,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 776 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:30,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-10-11 01:59:30,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2024-10-11 01:59:30,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1193693693693694) internal successors, (497), 444 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 01:59:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 497 transitions. [2024-10-11 01:59:30,353 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 497 transitions. Word has length 37 [2024-10-11 01:59:30,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:30,353 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 497 transitions. [2024-10-11 01:59:30,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:59:30,353 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 497 transitions. [2024-10-11 01:59:30,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 01:59:30,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:30,354 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:30,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-10-11 01:59:30,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:30,554 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:30,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:30,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1826129136, now seen corresponding path program 64 times [2024-10-11 01:59:30,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:30,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103358032] [2024-10-11 01:59:30,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:30,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:30,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103358032] [2024-10-11 01:59:30,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103358032] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:30,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198733599] [2024-10-11 01:59:30,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:59:30,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:30,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:30,821 INFO L229 MonitoredProcess]: Starting monitored process 67 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 01:59:30,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-10-11 01:59:30,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:59:30,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:30,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-11 01:59:30,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:31,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:31,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198733599] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:31,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:31,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 38 [2024-10-11 01:59:31,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223788041] [2024-10-11 01:59:31,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:31,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-11 01:59:31,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-11 01:59:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1303, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 01:59:31,338 INFO L87 Difference]: Start difference. First operand 445 states and 497 transitions. Second operand has 38 states, 38 states have (on average 1.5) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:59:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:31,774 INFO L93 Difference]: Finished difference Result 460 states and 511 transitions. [2024-10-11 01:59:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 01:59:31,774 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 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 37 [2024-10-11 01:59:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:31,776 INFO L225 Difference]: With dead ends: 460 [2024-10-11 01:59:31,776 INFO L226 Difference]: Without dead ends: 433 [2024-10-11 01:59:31,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=2097, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 01:59:31,776 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 37 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:31,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 595 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:59:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-10-11 01:59:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2024-10-11 01:59:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.1203703703703705) internal successors, (484), 432 states have internal predecessors, (484), 0 states have call successors, (0), 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 01:59:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 484 transitions. [2024-10-11 01:59:31,909 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 484 transitions. Word has length 37 [2024-10-11 01:59:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:31,909 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 484 transitions. [2024-10-11 01:59:31,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:59:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 484 transitions. [2024-10-11 01:59:31,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 01:59:31,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:31,910 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:31,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:32,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2024-10-11 01:59:32,110 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:32,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1422858124, now seen corresponding path program 65 times [2024-10-11 01:59:32,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:32,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266807483] [2024-10-11 01:59:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:32,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:59:32,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:32,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266807483] [2024-10-11 01:59:32,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266807483] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:32,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071852878] [2024-10-11 01:59:32,307 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:59:32,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:32,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:32,308 INFO L229 MonitoredProcess]: Starting monitored process 68 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 01:59:32,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-10-11 01:59:32,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 01:59:32,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:32,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-11 01:59:32,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 01:59:32,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:59:32,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071852878] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:32,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:32,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 20] total 41 [2024-10-11 01:59:32,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30743466] [2024-10-11 01:59:32,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:32,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-11 01:59:32,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-11 01:59:32,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 01:59:32,857 INFO L87 Difference]: Start difference. First operand 433 states and 484 transitions. Second operand has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 41 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:59:33,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:33,420 INFO L93 Difference]: Finished difference Result 457 states and 511 transitions. [2024-10-11 01:59:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 01:59:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 41 states have internal predecessors, (61), 0 states have call successors, (0), 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 37 [2024-10-11 01:59:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:33,422 INFO L225 Difference]: With dead ends: 457 [2024-10-11 01:59:33,422 INFO L226 Difference]: Without dead ends: 452 [2024-10-11 01:59:33,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=2768, Unknown=0, NotChecked=0, Total=2970 [2024-10-11 01:59:33,423 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 38 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:33,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 463 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-10-11 01:59:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 445. [2024-10-11 01:59:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1216216216216217) internal successors, (498), 444 states have internal predecessors, (498), 0 states have call successors, (0), 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 01:59:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 498 transitions. [2024-10-11 01:59:33,557 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 498 transitions. Word has length 37 [2024-10-11 01:59:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:33,557 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 498 transitions. [2024-10-11 01:59:33,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 41 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:59:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 498 transitions. [2024-10-11 01:59:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 01:59:33,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:33,558 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:33,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:33,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:33,758 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:33,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:33,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1002634746, now seen corresponding path program 66 times [2024-10-11 01:59:33,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:33,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432389630] [2024-10-11 01:59:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:33,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:34,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:34,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432389630] [2024-10-11 01:59:34,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432389630] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:34,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091658296] [2024-10-11 01:59:34,061 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:59:34,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:34,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:34,062 INFO L229 MonitoredProcess]: Starting monitored process 69 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 01:59:34,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-10-11 01:59:34,132 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-10-11 01:59:34,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:34,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 01:59:34,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:34,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:35,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091658296] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:35,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:35,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2024-10-11 01:59:35,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958432337] [2024-10-11 01:59:35,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:35,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-10-11 01:59:35,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-10-11 01:59:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2706, Unknown=0, NotChecked=0, Total=2862 [2024-10-11 01:59:35,286 INFO L87 Difference]: Start difference. First operand 445 states and 498 transitions. Second operand has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:59:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:36,252 INFO L93 Difference]: Finished difference Result 644 states and 712 transitions. [2024-10-11 01:59:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 01:59:36,252 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 0 states have call successors, (0), 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 38 [2024-10-11 01:59:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:36,254 INFO L225 Difference]: With dead ends: 644 [2024-10-11 01:59:36,254 INFO L226 Difference]: Without dead ends: 602 [2024-10-11 01:59:36,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 36 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=534, Invalid=4578, Unknown=0, NotChecked=0, Total=5112 [2024-10-11 01:59:36,255 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 38 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:36,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 397 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:36,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-10-11 01:59:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 490. [2024-10-11 01:59:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.1206543967280163) internal successors, (548), 489 states have internal predecessors, (548), 0 states have call successors, (0), 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 01:59:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 548 transitions. [2024-10-11 01:59:36,410 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 548 transitions. Word has length 38 [2024-10-11 01:59:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:36,410 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 548 transitions. [2024-10-11 01:59:36,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:59:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 548 transitions. [2024-10-11 01:59:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 01:59:36,411 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:36,411 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:36,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:36,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,69 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:36,612 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:36,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:36,612 INFO L85 PathProgramCache]: Analyzing trace with hash 351860781, now seen corresponding path program 67 times [2024-10-11 01:59:36,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:36,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280159115] [2024-10-11 01:59:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:36,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:36,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280159115] [2024-10-11 01:59:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280159115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746124084] [2024-10-11 01:59:36,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:59:36,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:36,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:36,995 INFO L229 MonitoredProcess]: Starting monitored process 70 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 01:59:36,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-10-11 01:59:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:37,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 01:59:37,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:37,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:38,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746124084] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:38,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:38,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 55 [2024-10-11 01:59:38,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842177493] [2024-10-11 01:59:38,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:38,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-11 01:59:38,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-11 01:59:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2808, Unknown=0, NotChecked=0, Total=2970 [2024-10-11 01:59:38,299 INFO L87 Difference]: Start difference. First operand 490 states and 548 transitions. Second operand has 55 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 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 01:59:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:39,516 INFO L93 Difference]: Finished difference Result 516 states and 579 transitions. [2024-10-11 01:59:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 01:59:39,516 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 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 38 [2024-10-11 01:59:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:39,518 INFO L225 Difference]: With dead ends: 516 [2024-10-11 01:59:39,518 INFO L226 Difference]: Without dead ends: 495 [2024-10-11 01:59:39,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 35 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=328, Invalid=4784, Unknown=0, NotChecked=0, Total=5112 [2024-10-11 01:59:39,519 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:39,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 628 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:59:39,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-10-11 01:59:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2024-10-11 01:59:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.1194331983805668) internal successors, (553), 494 states have internal predecessors, (553), 0 states have call successors, (0), 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 01:59:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 553 transitions. [2024-10-11 01:59:39,683 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 553 transitions. Word has length 38 [2024-10-11 01:59:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:39,683 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 553 transitions. [2024-10-11 01:59:39,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 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 01:59:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 553 transitions. [2024-10-11 01:59:39,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 01:59:39,684 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:39,684 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:39,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:39,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-10-11 01:59:39,885 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:39,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1188121211, now seen corresponding path program 68 times [2024-10-11 01:59:39,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:39,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286300931] [2024-10-11 01:59:39,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:39,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:39,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:39,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286300931] [2024-10-11 01:59:39,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286300931] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:39,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309482587] [2024-10-11 01:59:39,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:59:39,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:39,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:39,995 INFO L229 MonitoredProcess]: Starting monitored process 71 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 01:59:39,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-10-11 01:59:40,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:59:40,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:40,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 01:59:40,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:40,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:40,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309482587] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:40,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:40,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-10-11 01:59:40,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89601219] [2024-10-11 01:59:40,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:40,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 01:59:40,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:40,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 01:59:40,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-10-11 01:59:40,241 INFO L87 Difference]: Start difference. First operand 495 states and 553 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 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 01:59:40,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:40,591 INFO L93 Difference]: Finished difference Result 558 states and 629 transitions. [2024-10-11 01:59:40,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 01:59:40,592 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 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 38 [2024-10-11 01:59:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:40,594 INFO L225 Difference]: With dead ends: 558 [2024-10-11 01:59:40,594 INFO L226 Difference]: Without dead ends: 543 [2024-10-11 01:59:40,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 01:59:40,594 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:40,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 158 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:59:40,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-10-11 01:59:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 529. [2024-10-11 01:59:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.1325757575757576) internal successors, (598), 528 states have internal predecessors, (598), 0 states have call successors, (0), 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 01:59:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 598 transitions. [2024-10-11 01:59:40,771 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 598 transitions. Word has length 38 [2024-10-11 01:59:40,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:40,771 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 598 transitions. [2024-10-11 01:59:40,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 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 01:59:40,771 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 598 transitions. [2024-10-11 01:59:40,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 01:59:40,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:40,772 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:40,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-10-11 01:59:40,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:40,977 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:40,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1446536530, now seen corresponding path program 69 times [2024-10-11 01:59:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:40,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569334989] [2024-10-11 01:59:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:41,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569334989] [2024-10-11 01:59:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569334989] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:41,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993755486] [2024-10-11 01:59:41,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:59:41,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:41,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:41,062 INFO L229 MonitoredProcess]: Starting monitored process 72 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 01:59:41,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-10-11 01:59:41,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 01:59:41,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:41,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 01:59:41,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:41,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:59:41,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993755486] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:41,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:41,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-10-11 01:59:41,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98014355] [2024-10-11 01:59:41,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:41,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 01:59:41,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 01:59:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-10-11 01:59:41,278 INFO L87 Difference]: Start difference. First operand 529 states and 598 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 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 01:59:41,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:41,691 INFO L93 Difference]: Finished difference Result 762 states and 884 transitions. [2024-10-11 01:59:41,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 01:59:41,691 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 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 38 [2024-10-11 01:59:41,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:41,693 INFO L225 Difference]: With dead ends: 762 [2024-10-11 01:59:41,693 INFO L226 Difference]: Without dead ends: 611 [2024-10-11 01:59:41,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 01:59:41,694 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:41,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 153 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:59:41,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-10-11 01:59:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2024-10-11 01:59:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.1327868852459015) internal successors, (691), 610 states have internal predecessors, (691), 0 states have call successors, (0), 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 01:59:41,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 691 transitions. [2024-10-11 01:59:41,896 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 691 transitions. Word has length 38 [2024-10-11 01:59:41,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:41,896 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 691 transitions. [2024-10-11 01:59:41,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 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 01:59:41,896 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 691 transitions. [2024-10-11 01:59:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 01:59:41,897 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:41,897 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:41,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:42,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-10-11 01:59:42,098 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:42,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:42,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1762474361, now seen corresponding path program 70 times [2024-10-11 01:59:42,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417123861] [2024-10-11 01:59:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:42,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:59:42,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:42,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417123861] [2024-10-11 01:59:42,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417123861] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:42,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698132292] [2024-10-11 01:59:42,463 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:59:42,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:42,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:42,464 INFO L229 MonitoredProcess]: Starting monitored process 73 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 01:59:42,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-10-11 01:59:42,533 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:59:42,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:42,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-11 01:59:42,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:59:42,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:59:43,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698132292] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:43,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:43,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 47 [2024-10-11 01:59:43,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652648793] [2024-10-11 01:59:43,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:43,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-11 01:59:43,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-11 01:59:43,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2049, Unknown=0, NotChecked=0, Total=2162 [2024-10-11 01:59:43,078 INFO L87 Difference]: Start difference. First operand 611 states and 691 transitions. Second operand has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 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 01:59:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:44,049 INFO L93 Difference]: Finished difference Result 675 states and 762 transitions. [2024-10-11 01:59:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-11 01:59:44,050 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 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 39 [2024-10-11 01:59:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:44,052 INFO L225 Difference]: With dead ends: 675 [2024-10-11 01:59:44,052 INFO L226 Difference]: Without dead ends: 667 [2024-10-11 01:59:44,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2024-10-11 01:59:44,053 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 98 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:44,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1486 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 01:59:44,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-10-11 01:59:44,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 619. [2024-10-11 01:59:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 1.132686084142395) internal successors, (700), 618 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:59:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 700 transitions. [2024-10-11 01:59:44,259 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 700 transitions. Word has length 39 [2024-10-11 01:59:44,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:44,259 INFO L471 AbstractCegarLoop]: Abstraction has 619 states and 700 transitions. [2024-10-11 01:59:44,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 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 01:59:44,260 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 700 transitions. [2024-10-11 01:59:44,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 01:59:44,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:44,261 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:44,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:44,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-10-11 01:59:44,465 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:44,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash -859199623, now seen corresponding path program 71 times [2024-10-11 01:59:44,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:44,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187399680] [2024-10-11 01:59:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:44,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:44,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:44,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187399680] [2024-10-11 01:59:44,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187399680] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:44,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027948298] [2024-10-11 01:59:44,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:59:44,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:44,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:44,868 INFO L229 MonitoredProcess]: Starting monitored process 74 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 01:59:44,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-10-11 01:59:44,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-11 01:59:44,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:44,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-11 01:59:44,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:45,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:59:45,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027948298] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:45,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:45,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 45 [2024-10-11 01:59:45,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297276609] [2024-10-11 01:59:45,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:45,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-11 01:59:45,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:45,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-11 01:59:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1868, Unknown=0, NotChecked=0, Total=1980 [2024-10-11 01:59:45,426 INFO L87 Difference]: Start difference. First operand 619 states and 700 transitions. Second operand has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 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 01:59:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:46,127 INFO L93 Difference]: Finished difference Result 637 states and 717 transitions. [2024-10-11 01:59:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-11 01:59:46,127 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 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 39 [2024-10-11 01:59:46,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:46,129 INFO L225 Difference]: With dead ends: 637 [2024-10-11 01:59:46,129 INFO L226 Difference]: Without dead ends: 611 [2024-10-11 01:59:46,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=3132, Unknown=0, NotChecked=0, Total=3306 [2024-10-11 01:59:46,130 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 77 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:46,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1136 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:46,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-10-11 01:59:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2024-10-11 01:59:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.1327868852459015) internal successors, (691), 610 states have internal predecessors, (691), 0 states have call successors, (0), 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 01:59:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 691 transitions. [2024-10-11 01:59:46,333 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 691 transitions. Word has length 39 [2024-10-11 01:59:46,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:46,333 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 691 transitions. [2024-10-11 01:59:46,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 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 01:59:46,333 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 691 transitions. [2024-10-11 01:59:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 01:59:46,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:46,334 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:46,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-10-11 01:59:46,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:46,535 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:46,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1719435641, now seen corresponding path program 72 times [2024-10-11 01:59:46,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:46,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68623007] [2024-10-11 01:59:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:46,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:47,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68623007] [2024-10-11 01:59:47,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68623007] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927781971] [2024-10-11 01:59:47,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:59:47,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:47,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:47,165 INFO L229 MonitoredProcess]: Starting monitored process 75 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 01:59:47,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-10-11 01:59:47,240 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-11 01:59:47,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:47,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-11 01:59:47,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:47,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:59:47,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927781971] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:47,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:47,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 43 [2024-10-11 01:59:47,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971809329] [2024-10-11 01:59:47,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:47,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-11 01:59:47,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-11 01:59:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1695, Unknown=0, NotChecked=0, Total=1806 [2024-10-11 01:59:47,626 INFO L87 Difference]: Start difference. First operand 611 states and 691 transitions. Second operand has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 0 states have call successors, (0), 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 01:59:48,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:48,278 INFO L93 Difference]: Finished difference Result 628 states and 707 transitions. [2024-10-11 01:59:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 01:59:48,278 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 0 states have call successors, (0), 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 39 [2024-10-11 01:59:48,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:48,281 INFO L225 Difference]: With dead ends: 628 [2024-10-11 01:59:48,281 INFO L226 Difference]: Without dead ends: 601 [2024-10-11 01:59:48,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=2798, Unknown=0, NotChecked=0, Total=2970 [2024-10-11 01:59:48,281 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 62 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:48,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1004 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-10-11 01:59:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2024-10-11 01:59:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.1333333333333333) internal successors, (680), 600 states have internal predecessors, (680), 0 states have call successors, (0), 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 01:59:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 680 transitions. [2024-10-11 01:59:48,485 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 680 transitions. Word has length 39 [2024-10-11 01:59:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:48,485 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 680 transitions. [2024-10-11 01:59:48,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 0 states have call successors, (0), 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 01:59:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 680 transitions. [2024-10-11 01:59:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 01:59:48,486 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:48,486 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:48,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:48,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:48,687 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:48,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:48,687 INFO L85 PathProgramCache]: Analyzing trace with hash -151888007, now seen corresponding path program 73 times [2024-10-11 01:59:48,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:48,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773040168] [2024-10-11 01:59:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:48,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:49,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:49,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773040168] [2024-10-11 01:59:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773040168] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:49,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698086171] [2024-10-11 01:59:49,037 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:59:49,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:49,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:49,045 INFO L229 MonitoredProcess]: Starting monitored process 76 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 01:59:49,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-10-11 01:59:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:49,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-11 01:59:49,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:49,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:59:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698086171] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:49,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:49,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 41 [2024-10-11 01:59:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670719637] [2024-10-11 01:59:49,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:49,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-11 01:59:49,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-11 01:59:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 01:59:49,629 INFO L87 Difference]: Start difference. First operand 601 states and 680 transitions. Second operand has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 0 states have call successors, (0), 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 01:59:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:50,280 INFO L93 Difference]: Finished difference Result 617 states and 695 transitions. [2024-10-11 01:59:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 01:59:50,281 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 0 states have call successors, (0), 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 39 [2024-10-11 01:59:50,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:50,283 INFO L225 Difference]: With dead ends: 617 [2024-10-11 01:59:50,283 INFO L226 Difference]: Without dead ends: 589 [2024-10-11 01:59:50,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=2482, Unknown=0, NotChecked=0, Total=2652 [2024-10-11 01:59:50,283 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 46 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:50,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 778 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-10-11 01:59:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2024-10-11 01:59:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 1.1343537414965987) internal successors, (667), 588 states have internal predecessors, (667), 0 states have call successors, (0), 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 01:59:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 667 transitions. [2024-10-11 01:59:50,488 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 667 transitions. Word has length 39 [2024-10-11 01:59:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:50,488 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 667 transitions. [2024-10-11 01:59:50,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 0 states have call successors, (0), 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 01:59:50,489 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 667 transitions. [2024-10-11 01:59:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 01:59:50,489 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:50,489 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:50,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-10-11 01:59:50,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:50,693 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:50,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1350604866, now seen corresponding path program 74 times [2024-10-11 01:59:50,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:50,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804333397] [2024-10-11 01:59:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:50,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-11 01:59:50,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804333397] [2024-10-11 01:59:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804333397] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713104253] [2024-10-11 01:59:50,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:59:50,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:50,876 INFO L229 MonitoredProcess]: Starting monitored process 77 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 01:59:50,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-10-11 01:59:50,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:59:50,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:50,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 01:59:50,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-11 01:59:51,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-11 01:59:51,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713104253] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:51,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:51,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2024-10-11 01:59:51,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475351738] [2024-10-11 01:59:51,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:51,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-11 01:59:51,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:51,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-11 01:59:51,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 01:59:51,467 INFO L87 Difference]: Start difference. First operand 589 states and 667 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 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 01:59:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:52,137 INFO L93 Difference]: Finished difference Result 706 states and 804 transitions. [2024-10-11 01:59:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 01:59:52,138 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 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 39 [2024-10-11 01:59:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:52,140 INFO L225 Difference]: With dead ends: 706 [2024-10-11 01:59:52,140 INFO L226 Difference]: Without dead ends: 645 [2024-10-11 01:59:52,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=1819, Unknown=0, NotChecked=0, Total=2070 [2024-10-11 01:59:52,140 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:52,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 344 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:59:52,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-10-11 01:59:52,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2024-10-11 01:59:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.1211180124223603) internal successors, (722), 644 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:59:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 722 transitions. [2024-10-11 01:59:52,349 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 722 transitions. Word has length 39 [2024-10-11 01:59:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:52,350 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 722 transitions. [2024-10-11 01:59:52,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 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 01:59:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 722 transitions. [2024-10-11 01:59:52,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 01:59:52,350 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:52,351 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:52,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:52,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:52,553 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:52,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1780758151, now seen corresponding path program 75 times [2024-10-11 01:59:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:52,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484988280] [2024-10-11 01:59:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:52,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:59:52,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:52,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484988280] [2024-10-11 01:59:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484988280] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130350057] [2024-10-11 01:59:52,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:59:52,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:52,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:52,813 INFO L229 MonitoredProcess]: Starting monitored process 78 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 01:59:52,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-10-11 01:59:52,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 01:59:52,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:52,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-11 01:59:52,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:59:53,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:59:53,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130350057] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:53,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:53,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 39 [2024-10-11 01:59:53,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449368470] [2024-10-11 01:59:53,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:53,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-11 01:59:53,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:53,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-11 01:59:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1373, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 01:59:53,322 INFO L87 Difference]: Start difference. First operand 645 states and 722 transitions. Second operand has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:59:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:53,880 INFO L93 Difference]: Finished difference Result 681 states and 762 transitions. [2024-10-11 01:59:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 01:59:53,881 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 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 39 [2024-10-11 01:59:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:53,883 INFO L225 Difference]: With dead ends: 681 [2024-10-11 01:59:53,883 INFO L226 Difference]: Without dead ends: 652 [2024-10-11 01:59:53,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=2184, Unknown=0, NotChecked=0, Total=2352 [2024-10-11 01:59:53,883 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:53,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 485 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:59:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2024-10-11 01:59:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 641. [2024-10-11 01:59:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.1234375) internal successors, (719), 640 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:59:54,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 719 transitions. [2024-10-11 01:59:54,102 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 719 transitions. Word has length 39 [2024-10-11 01:59:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:54,102 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 719 transitions. [2024-10-11 01:59:54,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:59:54,103 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 719 transitions. [2024-10-11 01:59:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 01:59:54,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:54,104 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:54,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:54,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:54,304 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:54,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:54,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2037478882, now seen corresponding path program 76 times [2024-10-11 01:59:54,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:54,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173570563] [2024-10-11 01:59:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-11 01:59:54,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:54,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173570563] [2024-10-11 01:59:54,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173570563] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:54,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728524240] [2024-10-11 01:59:54,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:59:54,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:54,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:54,461 INFO L229 MonitoredProcess]: Starting monitored process 79 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 01:59:54,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-10-11 01:59:54,532 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:59:54,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:54,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 01:59:54,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-11 01:59:54,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-11 01:59:54,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728524240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:54,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:54,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-10-11 01:59:54,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247917069] [2024-10-11 01:59:54,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:54,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 01:59:54,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:54,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 01:59:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 01:59:54,994 INFO L87 Difference]: Start difference. First operand 641 states and 719 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:59:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:55,564 INFO L93 Difference]: Finished difference Result 674 states and 752 transitions. [2024-10-11 01:59:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 01:59:55,565 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 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 39 [2024-10-11 01:59:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:55,567 INFO L225 Difference]: With dead ends: 674 [2024-10-11 01:59:55,567 INFO L226 Difference]: Without dead ends: 641 [2024-10-11 01:59:55,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 01:59:55,568 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:55,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 281 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:59:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2024-10-11 01:59:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2024-10-11 01:59:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.1078125) internal successors, (709), 640 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:59:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 709 transitions. [2024-10-11 01:59:55,784 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 709 transitions. Word has length 39 [2024-10-11 01:59:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:55,785 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 709 transitions. [2024-10-11 01:59:55,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:59:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 709 transitions. [2024-10-11 01:59:55,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 01:59:55,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:55,786 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:55,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2024-10-11 01:59:55,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:55,990 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:55,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:55,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1753144915, now seen corresponding path program 77 times [2024-10-11 01:59:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:55,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864990293] [2024-10-11 01:59:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:55,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:56,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864990293] [2024-10-11 01:59:56,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864990293] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504127664] [2024-10-11 01:59:56,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:59:56,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:56,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:56,376 INFO L229 MonitoredProcess]: Starting monitored process 80 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 01:59:56,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-10-11 01:59:56,449 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-10-11 01:59:56,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:59:56,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 01:59:56,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:59:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:57,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:59:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:57,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504127664] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:59:57,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:59:57,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 59 [2024-10-11 01:59:57,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389457525] [2024-10-11 01:59:57,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:59:57,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-10-11 01:59:57,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:59:57,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-10-11 01:59:57,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3250, Unknown=0, NotChecked=0, Total=3422 [2024-10-11 01:59:57,786 INFO L87 Difference]: Start difference. First operand 641 states and 709 transitions. Second operand has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:59:59,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:59:59,140 INFO L93 Difference]: Finished difference Result 931 states and 1017 transitions. [2024-10-11 01:59:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 01:59:59,141 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 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 40 [2024-10-11 01:59:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:59:59,144 INFO L225 Difference]: With dead ends: 931 [2024-10-11 01:59:59,144 INFO L226 Difference]: Without dead ends: 885 [2024-10-11 01:59:59,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 36 SyntacticMatches, 10 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=627, Invalid=5535, Unknown=0, NotChecked=0, Total=6162 [2024-10-11 01:59:59,145 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 38 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:59:59,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 428 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:59:59,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-10-11 01:59:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 703. [2024-10-11 01:59:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 1.106837606837607) internal successors, (777), 702 states have internal predecessors, (777), 0 states have call successors, (0), 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 01:59:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 777 transitions. [2024-10-11 01:59:59,406 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 777 transitions. Word has length 40 [2024-10-11 01:59:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:59:59,406 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 777 transitions. [2024-10-11 01:59:59,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:59:59,406 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 777 transitions. [2024-10-11 01:59:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 01:59:59,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:59:59,408 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:59:59,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-10-11 01:59:59,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2024-10-11 01:59:59,612 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:59:59,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:59:59,612 INFO L85 PathProgramCache]: Analyzing trace with hash -452301350, now seen corresponding path program 78 times [2024-10-11 01:59:59,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:59:59,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642964901] [2024-10-11 01:59:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:59:59,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:59:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:59:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:59:59,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:59:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642964901] [2024-10-11 01:59:59,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642964901] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:59:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38517002] [2024-10-11 01:59:59,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:59:59,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:59:59,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:59:59,980 INFO L229 MonitoredProcess]: Starting monitored process 81 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 01:59:59,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-10-11 02:00:00,055 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-11 02:00:00,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 02:00:00,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 02:00:00,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:00:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 02:00:00,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:00:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 02:00:01,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38517002] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:00:01,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:00:01,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 60 [2024-10-11 02:00:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131664782] [2024-10-11 02:00:01,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:00:01,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-10-11 02:00:01,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:00:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-10-11 02:00:01,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3363, Unknown=0, NotChecked=0, Total=3540 [2024-10-11 02:00:01,263 INFO L87 Difference]: Start difference. First operand 703 states and 777 transitions. Second operand has 60 states, 60 states have (on average 1.45) internal successors, (87), 60 states have internal predecessors, (87), 0 states have call successors, (0), 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 02:00:02,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:00:02,930 INFO L93 Difference]: Finished difference Result 732 states and 812 transitions. [2024-10-11 02:00:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 02:00:02,931 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.45) internal successors, (87), 60 states have internal predecessors, (87), 0 states have call successors, (0), 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 40 [2024-10-11 02:00:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:00:02,933 INFO L225 Difference]: With dead ends: 732 [2024-10-11 02:00:02,933 INFO L226 Difference]: Without dead ends: 709 [2024-10-11 02:00:02,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 35 SyntacticMatches, 11 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=372, Invalid=5790, Unknown=0, NotChecked=0, Total=6162 [2024-10-11 02:00:02,934 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 02:00:02,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 577 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 02:00:02,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-10-11 02:00:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2024-10-11 02:00:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 1.1059322033898304) internal successors, (783), 708 states have internal predecessors, (783), 0 states have call successors, (0), 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 02:00:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 783 transitions. [2024-10-11 02:00:03,201 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 783 transitions. Word has length 40 [2024-10-11 02:00:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:00:03,202 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 783 transitions. [2024-10-11 02:00:03,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.45) internal successors, (87), 60 states have internal predecessors, (87), 0 states have call successors, (0), 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 02:00:03,202 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 783 transitions. [2024-10-11 02:00:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 02:00:03,203 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:00:03,203 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:00:03,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-10-11 02:00:03,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,81 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:00:03,406 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:00:03,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:00:03,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1805018702, now seen corresponding path program 79 times [2024-10-11 02:00:03,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:00:03,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639708202] [2024-10-11 02:00:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:00:03,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:00:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:00:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-11 02:00:03,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:00:03,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639708202] [2024-10-11 02:00:03,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639708202] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:00:03,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302788132] [2024-10-11 02:00:03,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 02:00:03,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:00:03,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:00:03,499 INFO L229 MonitoredProcess]: Starting monitored process 82 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 02:00:03,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-10-11 02:00:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:00:03,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 02:00:03,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:00:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-11 02:00:03,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:00:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-11 02:00:03,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302788132] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:00:03,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:00:03,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-11 02:00:03,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218201350] [2024-10-11 02:00:03,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:00:03,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 02:00:03,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:00:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 02:00:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=329, Unknown=0, NotChecked=0, Total=506 [2024-10-11 02:00:03,738 INFO L87 Difference]: Start difference. First operand 709 states and 783 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 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 02:00:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:00:04,174 INFO L93 Difference]: Finished difference Result 825 states and 918 transitions. [2024-10-11 02:00:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 02:00:04,175 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 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 40 [2024-10-11 02:00:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:00:04,177 INFO L225 Difference]: With dead ends: 825 [2024-10-11 02:00:04,177 INFO L226 Difference]: Without dead ends: 697 [2024-10-11 02:00:04,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 60 SyntacticMatches, 12 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=487, Invalid=919, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 02:00:04,178 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 53 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:00:04,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 211 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:00:04,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-10-11 02:00:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2024-10-11 02:00:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.1020114942528736) internal successors, (767), 696 states have internal predecessors, (767), 0 states have call successors, (0), 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 02:00:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 767 transitions. [2024-10-11 02:00:04,486 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 767 transitions. Word has length 40 [2024-10-11 02:00:04,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:00:04,486 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 767 transitions. [2024-10-11 02:00:04,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 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 02:00:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 767 transitions. [2024-10-11 02:00:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 02:00:04,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:00:04,487 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:00:04,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2024-10-11 02:00:04,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:00:04,688 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:00:04,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:00:04,689 INFO L85 PathProgramCache]: Analyzing trace with hash -79321705, now seen corresponding path program 80 times [2024-10-11 02:00:04,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:00:04,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407067019] [2024-10-11 02:00:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:00:04,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:00:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:00:04,783 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-11 02:00:04,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:00:04,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407067019] [2024-10-11 02:00:04,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407067019] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:00:04,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639557699] [2024-10-11 02:00:04,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 02:00:04,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:00:04,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:00:04,785 INFO L229 MonitoredProcess]: Starting monitored process 83 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 02:00:04,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-10-11 02:00:04,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 02:00:04,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 02:00:04,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 02:00:04,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:00:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-11 02:00:04,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:00:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-11 02:00:05,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639557699] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:00:05,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:00:05,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-11 02:00:05,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531734069] [2024-10-11 02:00:05,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:00:05,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 02:00:05,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:00:05,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 02:00:05,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=329, Unknown=0, NotChecked=0, Total=506 [2024-10-11 02:00:05,002 INFO L87 Difference]: Start difference. First operand 697 states and 767 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 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 02:00:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:00:05,473 INFO L93 Difference]: Finished difference Result 717 states and 787 transitions. [2024-10-11 02:00:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 02:00:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 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 40 [2024-10-11 02:00:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:00:05,476 INFO L225 Difference]: With dead ends: 717 [2024-10-11 02:00:05,476 INFO L226 Difference]: Without dead ends: 712 [2024-10-11 02:00:05,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 60 SyntacticMatches, 12 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=487, Invalid=919, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 02:00:05,477 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 46 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:00:05,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 310 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:00:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-10-11 02:00:05,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 698. [2024-10-11 02:00:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.1018651362984218) internal successors, (768), 697 states have internal predecessors, (768), 0 states have call successors, (0), 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 02:00:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 768 transitions. [2024-10-11 02:00:05,770 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 768 transitions. Word has length 40 [2024-10-11 02:00:05,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:00:05,770 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 768 transitions. [2024-10-11 02:00:05,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 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 02:00:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 768 transitions. [2024-10-11 02:00:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 02:00:05,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:00:05,771 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:00:05,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2024-10-11 02:00:05,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2024-10-11 02:00:05,977 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:00:05,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:00:05,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1691715220, now seen corresponding path program 81 times [2024-10-11 02:00:05,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:00:05,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411881720] [2024-10-11 02:00:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:00:05,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:00:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:00:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:00:06,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:00:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411881720] [2024-10-11 02:00:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411881720] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:00:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813234998] [2024-10-11 02:00:06,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 02:00:06,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:00:06,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:00:06,606 INFO L229 MonitoredProcess]: Starting monitored process 84 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 02:00:06,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-10-11 02:00:06,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-11 02:00:06,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 02:00:06,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-11 02:00:06,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:00:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:00:07,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:00:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:00:07,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813234998] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:00:07,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:00:07,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 50 [2024-10-11 02:00:07,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391975572] [2024-10-11 02:00:07,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:00:07,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-11 02:00:07,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:00:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-11 02:00:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2330, Unknown=0, NotChecked=0, Total=2450 [2024-10-11 02:00:07,243 INFO L87 Difference]: Start difference. First operand 698 states and 768 transitions. Second operand has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)