./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/pr5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-tiling/pr5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 374c198ea90130277bd1a124bc94571dd240bc0803e6f3936a68065c719ddd5a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:55:50,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:55:50,184 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:55:50,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:55:50,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:55:50,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:55:50,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:55:50,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:55:50,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:55:50,228 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:55:50,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:55:50,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:55:50,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:55:50,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:55:50,230 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:55:50,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:55:50,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:55:50,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:55:50,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:55:50,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:55:50,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:55:50,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:55:50,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:55:50,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:55:50,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:55:50,237 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:55:50,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:55:50,237 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:55:50,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:55:50,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:55:50,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:55:50,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:55:50,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:55:50,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:55:50,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:55:50,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:55:50,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:55:50,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:55:50,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:55:50,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:55:50,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:55:50,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:55:50,242 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 374c198ea90130277bd1a124bc94571dd240bc0803e6f3936a68065c719ddd5a [2024-11-08 09:55:50,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:55:50,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:55:50,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:55:50,520 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:55:50,521 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:55:50,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/pr5.c [2024-11-08 09:55:51,957 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:55:52,120 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:55:52,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/pr5.c [2024-11-08 09:55:52,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1d1dd5e5/28d1407a181b4659877acc55c19f34d6/FLAG064e1e171 [2024-11-08 09:55:52,140 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1d1dd5e5/28d1407a181b4659877acc55c19f34d6 [2024-11-08 09:55:52,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:55:52,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:55:52,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:55:52,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:55:52,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:55:52,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcec269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52, skipping insertion in model container [2024-11-08 09:55:52,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:55:52,381 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/pr5.c[394,407] [2024-11-08 09:55:52,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:55:52,425 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:55:52,437 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/pr5.c[394,407] [2024-11-08 09:55:52,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:55:52,474 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:55:52,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52 WrapperNode [2024-11-08 09:55:52,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:55:52,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:55:52,480 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:55:52,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:55:52,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,533 INFO L138 Inliner]: procedures = 15, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2024-11-08 09:55:52,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:55:52,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:55:52,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:55:52,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:55:52,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,573 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 6, 12]. 60 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 10 writes are split as follows [0, 0, 10]. [2024-11-08 09:55:52,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,579 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:55:52,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:55:52,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:55:52,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:55:52,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (1/1) ... [2024-11-08 09:55:52,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:55:52,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:52,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 09:55:52,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 09:55:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:55:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:55:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:55:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 09:55:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 09:55:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:55:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:55:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 09:55:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:55:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:55:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:55:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:55:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 09:55:52,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 09:55:52,781 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:55:52,783 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:55:53,000 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-08 09:55:53,001 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:55:53,013 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:55:53,014 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 09:55:53,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:55:53 BoogieIcfgContainer [2024-11-08 09:55:53,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:55:53,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:55:53,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:55:53,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:55:53,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:55:52" (1/3) ... [2024-11-08 09:55:53,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cb1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:55:53, skipping insertion in model container [2024-11-08 09:55:53,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:55:52" (2/3) ... [2024-11-08 09:55:53,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cb1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:55:53, skipping insertion in model container [2024-11-08 09:55:53,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:55:53" (3/3) ... [2024-11-08 09:55:53,025 INFO L112 eAbstractionObserver]: Analyzing ICFG pr5.c [2024-11-08 09:55:53,038 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:55:53,039 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:55:53,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:55:53,092 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;@c9233ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:55:53,092 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:55:53,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 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) [2024-11-08 09:55:53,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 09:55:53,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:53,101 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:53,102 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:53,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:53,107 INFO L85 PathProgramCache]: Analyzing trace with hash -50963655, now seen corresponding path program 1 times [2024-11-08 09:55:53,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:53,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91309191] [2024-11-08 09:55:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:53,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:53,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91309191] [2024-11-08 09:55:53,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91309191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:55:53,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:55:53,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 09:55:53,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094868929] [2024-11-08 09:55:53,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:55:53,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 09:55:53,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:53,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 09:55:53,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 09:55:53,324 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:53,335 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2024-11-08 09:55:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 09:55:53,337 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-08 09:55:53,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:53,342 INFO L225 Difference]: With dead ends: 49 [2024-11-08 09:55:53,343 INFO L226 Difference]: Without dead ends: 22 [2024-11-08 09:55:53,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 09:55:53,348 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:53,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:55:53,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-08 09:55:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-08 09:55:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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) [2024-11-08 09:55:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2024-11-08 09:55:53,373 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 13 [2024-11-08 09:55:53,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:53,373 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2024-11-08 09:55:53,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2024-11-08 09:55:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 09:55:53,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:53,375 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:53,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 09:55:53,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:53,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash 629094715, now seen corresponding path program 1 times [2024-11-08 09:55:53,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:53,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598975319] [2024-11-08 09:55:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:53,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:53,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:53,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598975319] [2024-11-08 09:55:53,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598975319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:55:53,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:55:53,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:55:53,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977697526] [2024-11-08 09:55:53,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:55:53,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:55:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:53,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:55:53,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:55:53,595 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:53,641 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2024-11-08 09:55:53,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:55:53,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-08 09:55:53,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:53,642 INFO L225 Difference]: With dead ends: 26 [2024-11-08 09:55:53,642 INFO L226 Difference]: Without dead ends: 24 [2024-11-08 09:55:53,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:55:53,644 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 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 [2024-11-08 09:55:53,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:55:53,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-08 09:55:53,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-08 09:55:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 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) [2024-11-08 09:55:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2024-11-08 09:55:53,653 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2024-11-08 09:55:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:53,653 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-11-08 09:55:53,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2024-11-08 09:55:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 09:55:53,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:53,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:55:53,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 09:55:53,655 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:53,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:53,656 INFO L85 PathProgramCache]: Analyzing trace with hash 629154297, now seen corresponding path program 1 times [2024-11-08 09:55:53,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771310501] [2024-11-08 09:55:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:53,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:53,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:53,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771310501] [2024-11-08 09:55:53,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771310501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:55:53,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:55:53,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 09:55:53,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471829946] [2024-11-08 09:55:53,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:55:53,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 09:55:53,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:53,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 09:55:53,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:55:53,936 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:54,033 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2024-11-08 09:55:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 09:55:54,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-08 09:55:54,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:54,036 INFO L225 Difference]: With dead ends: 42 [2024-11-08 09:55:54,036 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 09:55:54,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:55:54,039 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 81 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:54,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 21 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:55:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 09:55:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2024-11-08 09:55:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 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) [2024-11-08 09:55:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-08 09:55:54,049 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 13 [2024-11-08 09:55:54,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:54,049 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-08 09:55:54,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:54,049 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-08 09:55:54,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 09:55:54,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:54,051 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] [2024-11-08 09:55:54,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 09:55:54,051 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:54,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:54,056 INFO L85 PathProgramCache]: Analyzing trace with hash 314139906, now seen corresponding path program 1 times [2024-11-08 09:55:54,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:54,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186640849] [2024-11-08 09:55:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:54,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:54,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:54,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186640849] [2024-11-08 09:55:54,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186640849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:55:54,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:55:54,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:55:54,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564160805] [2024-11-08 09:55:54,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:55:54,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:55:54,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:55:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:55:54,211 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2024-11-08 09:55:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:54,278 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2024-11-08 09:55:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:55:54,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 [2024-11-08 09:55:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:54,280 INFO L225 Difference]: With dead ends: 61 [2024-11-08 09:55:54,280 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 09:55:54,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:55:54,282 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:54,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 42 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:55:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 09:55:54,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2024-11-08 09:55:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 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) [2024-11-08 09:55:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2024-11-08 09:55:54,290 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 20 [2024-11-08 09:55:54,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:54,290 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2024-11-08 09:55:54,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2024-11-08 09:55:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2024-11-08 09:55:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 09:55:54,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:54,292 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] [2024-11-08 09:55:54,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 09:55:54,292 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:54,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash 994198276, now seen corresponding path program 1 times [2024-11-08 09:55:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453579613] [2024-11-08 09:55:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:54,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:54,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453579613] [2024-11-08 09:55:54,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453579613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:55:54,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:55:54,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:55:54,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314392517] [2024-11-08 09:55:54,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:55:54,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:55:54,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:54,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:55:54,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:55:54,418 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2024-11-08 09:55:54,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:54,480 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2024-11-08 09:55:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:55:54,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 [2024-11-08 09:55:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:54,485 INFO L225 Difference]: With dead ends: 78 [2024-11-08 09:55:54,486 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 09:55:54,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:55:54,487 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 59 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:54,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 36 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:55:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 09:55:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2024-11-08 09:55:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 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) [2024-11-08 09:55:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2024-11-08 09:55:54,501 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 20 [2024-11-08 09:55:54,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:54,501 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2024-11-08 09:55:54,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2024-11-08 09:55:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2024-11-08 09:55:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 09:55:54,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:54,503 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] [2024-11-08 09:55:54,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 09:55:54,503 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:54,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash 707166916, now seen corresponding path program 1 times [2024-11-08 09:55:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709975108] [2024-11-08 09:55:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:54,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:55,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:55,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709975108] [2024-11-08 09:55:55,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709975108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:55,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889845983] [2024-11-08 09:55:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:55,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:55,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:55,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:55:55,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 09:55:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:55,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 09:55:55,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:55,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 09:55:55,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:55:55,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:55:55,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:55:55,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:55:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:55,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:55,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-08 09:55:55,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-08 09:55:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:55,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889845983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:55,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:55,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2024-11-08 09:55:55,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930414020] [2024-11-08 09:55:55,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:55,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 09:55:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:55,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 09:55:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-08 09:55:55,778 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 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) [2024-11-08 09:55:56,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:56,487 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2024-11-08 09:55:56,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 09:55:56,489 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 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 20 [2024-11-08 09:55:56,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:56,490 INFO L225 Difference]: With dead ends: 140 [2024-11-08 09:55:56,490 INFO L226 Difference]: Without dead ends: 122 [2024-11-08 09:55:56,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 09:55:56,491 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 356 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:56,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 139 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 09:55:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-08 09:55:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 61. [2024-11-08 09:55:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 60 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) [2024-11-08 09:55:56,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 86 transitions. [2024-11-08 09:55:56,501 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 86 transitions. Word has length 20 [2024-11-08 09:55:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:56,502 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 86 transitions. [2024-11-08 09:55:56,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 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) [2024-11-08 09:55:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 86 transitions. [2024-11-08 09:55:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 09:55:56,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:56,503 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] [2024-11-08 09:55:56,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 09:55:56,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 09:55:56,708 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:56,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash 407392262, now seen corresponding path program 1 times [2024-11-08 09:55:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:56,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589126231] [2024-11-08 09:55:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:56,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:57,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:57,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589126231] [2024-11-08 09:55:57,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589126231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:57,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563520284] [2024-11-08 09:55:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:57,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:57,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:57,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:55:57,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 09:55:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:57,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 09:55:57,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:57,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 09:55:57,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:55:57,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:55:57,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:55:57,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 09:55:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:57,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:57,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 09:55:57,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 09:55:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:57,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563520284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:57,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:57,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 7] total 17 [2024-11-08 09:55:57,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512966621] [2024-11-08 09:55:57,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:57,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 09:55:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 09:55:57,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-08 09:55:57,443 INFO L87 Difference]: Start difference. First operand 61 states and 86 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 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) [2024-11-08 09:55:58,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:55:58,135 INFO L93 Difference]: Finished difference Result 147 states and 196 transitions. [2024-11-08 09:55:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 09:55:58,135 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 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 20 [2024-11-08 09:55:58,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:55:58,136 INFO L225 Difference]: With dead ends: 147 [2024-11-08 09:55:58,136 INFO L226 Difference]: Without dead ends: 145 [2024-11-08 09:55:58,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=331, Invalid=1229, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 09:55:58,138 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 173 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 09:55:58,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 95 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 09:55:58,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-08 09:55:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 64. [2024-11-08 09:55:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:55:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2024-11-08 09:55:58,154 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 20 [2024-11-08 09:55:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:55:58,154 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2024-11-08 09:55:58,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 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) [2024-11-08 09:55:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2024-11-08 09:55:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 09:55:58,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:55:58,155 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, 1, 1, 1] [2024-11-08 09:55:58,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 09:55:58,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 09:55:58,360 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:55:58,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:55:58,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1616202537, now seen corresponding path program 1 times [2024-11-08 09:55:58,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:55:58,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266141345] [2024-11-08 09:55:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:58,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:55:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:58,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:55:58,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266141345] [2024-11-08 09:55:58,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266141345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:55:58,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273261392] [2024-11-08 09:55:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:55:58,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:55:58,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:55:58,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:55:58,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 09:55:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:55:58,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 09:55:58,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:55:58,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 09:55:58,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:55:59,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:55:59,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:55:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:59,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:55:59,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-08 09:55:59,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 09:55:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:55:59,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273261392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:55:59,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:55:59,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-08 09:55:59,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814962563] [2024-11-08 09:55:59,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:55:59,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 09:55:59,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:55:59,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 09:55:59,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-08 09:55:59,423 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 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) [2024-11-08 09:56:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:00,262 INFO L93 Difference]: Finished difference Result 347 states and 491 transitions. [2024-11-08 09:56:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 09:56:00,263 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 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) Word has length 26 [2024-11-08 09:56:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:00,266 INFO L225 Difference]: With dead ends: 347 [2024-11-08 09:56:00,266 INFO L226 Difference]: Without dead ends: 300 [2024-11-08 09:56:00,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 09:56:00,268 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 339 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:00,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 159 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 09:56:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-08 09:56:00,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 135. [2024-11-08 09:56:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.4477611940298507) internal successors, (194), 134 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 194 transitions. [2024-11-08 09:56:00,286 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 194 transitions. Word has length 26 [2024-11-08 09:56:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:00,286 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 194 transitions. [2024-11-08 09:56:00,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 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) [2024-11-08 09:56:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 194 transitions. [2024-11-08 09:56:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 09:56:00,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:00,288 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, 1, 1, 1] [2024-11-08 09:56:00,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 09:56:00,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:00,493 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:00,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash 684620053, now seen corresponding path program 1 times [2024-11-08 09:56:00,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:00,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307791196] [2024-11-08 09:56:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:00,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:56:00,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307791196] [2024-11-08 09:56:00,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307791196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:56:00,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:56:00,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:56:00,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632420733] [2024-11-08 09:56:00,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:56:00,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:56:00,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:00,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:56:00,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:56:00,568 INFO L87 Difference]: Start difference. First operand 135 states and 194 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:00,612 INFO L93 Difference]: Finished difference Result 192 states and 271 transitions. [2024-11-08 09:56:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:56:00,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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 [2024-11-08 09:56:00,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:00,615 INFO L225 Difference]: With dead ends: 192 [2024-11-08 09:56:00,615 INFO L226 Difference]: Without dead ends: 140 [2024-11-08 09:56:00,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:56:00,617 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 41 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:00,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 52 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:56:00,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-08 09:56:00,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2024-11-08 09:56:00,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 124 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) [2024-11-08 09:56:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions. [2024-11-08 09:56:00,638 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 172 transitions. Word has length 26 [2024-11-08 09:56:00,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:00,639 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 172 transitions. [2024-11-08 09:56:00,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:00,639 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 172 transitions. [2024-11-08 09:56:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 09:56:00,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:00,640 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, 1, 1, 1] [2024-11-08 09:56:00,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 09:56:00,640 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:00,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:00,640 INFO L85 PathProgramCache]: Analyzing trace with hash -595243625, now seen corresponding path program 1 times [2024-11-08 09:56:00,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:00,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821773007] [2024-11-08 09:56:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:00,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:56:00,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:00,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821773007] [2024-11-08 09:56:00,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821773007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:56:00,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:56:00,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:56:00,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802529591] [2024-11-08 09:56:00,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:56:00,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:56:00,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:00,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:56:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:56:00,721 INFO L87 Difference]: Start difference. First operand 125 states and 172 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:00,761 INFO L93 Difference]: Finished difference Result 154 states and 203 transitions. [2024-11-08 09:56:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:56:00,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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 [2024-11-08 09:56:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:00,763 INFO L225 Difference]: With dead ends: 154 [2024-11-08 09:56:00,763 INFO L226 Difference]: Without dead ends: 125 [2024-11-08 09:56:00,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:56:00,763 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 56 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 40 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 [2024-11-08 09:56:00,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:56:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-08 09:56:00,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2024-11-08 09:56:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 108 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2024-11-08 09:56:00,778 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 26 [2024-11-08 09:56:00,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:00,778 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2024-11-08 09:56:00,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:00,780 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2024-11-08 09:56:00,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 09:56:00,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:00,782 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, 1, 1, 1] [2024-11-08 09:56:00,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 09:56:00,783 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:00,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash 989711575, now seen corresponding path program 1 times [2024-11-08 09:56:00,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:00,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87914518] [2024-11-08 09:56:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:00,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:01,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:01,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87914518] [2024-11-08 09:56:01,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87914518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:01,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442385360] [2024-11-08 09:56:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:01,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:01,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:01,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:01,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 09:56:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:01,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 09:56:01,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:01,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 09:56:01,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:01,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:01,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 09:56:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:01,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:01,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-08 09:56:01,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 09:56:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:01,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442385360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:01,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:01,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 17 [2024-11-08 09:56:01,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598279139] [2024-11-08 09:56:01,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:01,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 09:56:01,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 09:56:01,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-08 09:56:01,415 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 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) [2024-11-08 09:56:01,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:01,885 INFO L93 Difference]: Finished difference Result 222 states and 292 transitions. [2024-11-08 09:56:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 09:56:01,885 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 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 26 [2024-11-08 09:56:01,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:01,886 INFO L225 Difference]: With dead ends: 222 [2024-11-08 09:56:01,886 INFO L226 Difference]: Without dead ends: 220 [2024-11-08 09:56:01,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2024-11-08 09:56:01,887 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 74 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:01,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 158 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 09:56:01,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-08 09:56:01,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 130. [2024-11-08 09:56:01,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.3565891472868217) internal successors, (175), 129 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 175 transitions. [2024-11-08 09:56:01,901 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 175 transitions. Word has length 26 [2024-11-08 09:56:01,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:01,901 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 175 transitions. [2024-11-08 09:56:01,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 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) [2024-11-08 09:56:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 175 transitions. [2024-11-08 09:56:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 09:56:01,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:01,903 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] [2024-11-08 09:56:01,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 09:56:02,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:02,103 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:02,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:02,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1583768663, now seen corresponding path program 1 times [2024-11-08 09:56:02,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:02,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428731566] [2024-11-08 09:56:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:02,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:02,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428731566] [2024-11-08 09:56:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428731566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:56:02,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:56:02,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:56:02,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166985129] [2024-11-08 09:56:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:56:02,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:56:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:56:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:56:02,136 INFO L87 Difference]: Start difference. First operand 130 states and 175 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2024-11-08 09:56:02,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:02,167 INFO L93 Difference]: Finished difference Result 162 states and 209 transitions. [2024-11-08 09:56:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:56:02,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-08 09:56:02,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:02,168 INFO L225 Difference]: With dead ends: 162 [2024-11-08 09:56:02,168 INFO L226 Difference]: Without dead ends: 127 [2024-11-08 09:56:02,169 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 [2024-11-08 09:56:02,169 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:02,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:56:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-08 09:56:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 111. [2024-11-08 09:56:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 110 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 147 transitions. [2024-11-08 09:56:02,178 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 147 transitions. Word has length 27 [2024-11-08 09:56:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:02,178 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 147 transitions. [2024-11-08 09:56:02,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2024-11-08 09:56:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 147 transitions. [2024-11-08 09:56:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-08 09:56:02,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:02,179 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, 1, 1, 1] [2024-11-08 09:56:02,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 09:56:02,180 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:02,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash -958935894, now seen corresponding path program 2 times [2024-11-08 09:56:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:02,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870775007] [2024-11-08 09:56:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:02,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:02,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:02,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870775007] [2024-11-08 09:56:02,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870775007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:02,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938044299] [2024-11-08 09:56:02,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:56:02,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:02,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:02,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:02,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 09:56:02,620 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:56:02,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:56:02,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 09:56:02,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:02,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 09:56:02,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:02,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:03,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:03,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-11-08 09:56:03,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2024-11-08 09:56:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:03,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938044299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:03,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:03,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 14] total 32 [2024-11-08 09:56:03,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004877159] [2024-11-08 09:56:03,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:03,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 09:56:03,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:03,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 09:56:03,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2024-11-08 09:56:03,508 INFO L87 Difference]: Start difference. First operand 111 states and 147 transitions. Second operand has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:05,594 INFO L93 Difference]: Finished difference Result 434 states and 556 transitions. [2024-11-08 09:56:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-08 09:56:05,595 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have 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 [2024-11-08 09:56:05,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:05,596 INFO L225 Difference]: With dead ends: 434 [2024-11-08 09:56:05,597 INFO L226 Difference]: Without dead ends: 398 [2024-11-08 09:56:05,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1031, Invalid=5289, Unknown=0, NotChecked=0, Total=6320 [2024-11-08 09:56:05,599 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 496 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:05,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 153 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 09:56:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-08 09:56:05,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 163. [2024-11-08 09:56:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.2901234567901234) internal successors, (209), 162 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 209 transitions. [2024-11-08 09:56:05,630 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 209 transitions. Word has length 32 [2024-11-08 09:56:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:05,631 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 209 transitions. [2024-11-08 09:56:05,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 209 transitions. [2024-11-08 09:56:05,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 09:56:05,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:05,632 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:05,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 09:56:05,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 09:56:05,833 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:05,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:05,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1605606378, now seen corresponding path program 1 times [2024-11-08 09:56:05,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:05,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480026965] [2024-11-08 09:56:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:05,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 09:56:05,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:05,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480026965] [2024-11-08 09:56:05,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480026965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:56:05,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:56:05,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:56:05,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385518362] [2024-11-08 09:56:05,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:56:05,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:56:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:05,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:56:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:56:05,872 INFO L87 Difference]: Start difference. First operand 163 states and 209 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-11-08 09:56:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:05,910 INFO L93 Difference]: Finished difference Result 203 states and 255 transitions. [2024-11-08 09:56:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:56:05,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) Word has length 33 [2024-11-08 09:56:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:05,911 INFO L225 Difference]: With dead ends: 203 [2024-11-08 09:56:05,911 INFO L226 Difference]: Without dead ends: 162 [2024-11-08 09:56:05,912 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 [2024-11-08 09:56:05,912 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:05,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 39 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:56:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-08 09:56:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 146. [2024-11-08 09:56:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.2689655172413794) internal successors, (184), 145 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) [2024-11-08 09:56:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 184 transitions. [2024-11-08 09:56:05,926 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 184 transitions. Word has length 33 [2024-11-08 09:56:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:05,927 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 184 transitions. [2024-11-08 09:56:05,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-11-08 09:56:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 184 transitions. [2024-11-08 09:56:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 09:56:05,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:05,928 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, 1, 1, 1] [2024-11-08 09:56:05,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 09:56:05,928 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:05,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1633319485, now seen corresponding path program 3 times [2024-11-08 09:56:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:05,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747909190] [2024-11-08 09:56:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:05,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:06,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:06,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747909190] [2024-11-08 09:56:06,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747909190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:06,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136130832] [2024-11-08 09:56:06,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:56:06,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:06,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:06,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:06,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 09:56:06,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 09:56:06,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:56:06,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 09:56:06,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:06,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 09:56:06,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-08 09:56:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:06,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:06,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-08 09:56:06,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 09:56:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:06,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136130832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:06,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:06,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2024-11-08 09:56:06,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291024285] [2024-11-08 09:56:06,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:06,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 09:56:06,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 09:56:06,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2024-11-08 09:56:06,931 INFO L87 Difference]: Start difference. First operand 146 states and 184 transitions. Second operand has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:08,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:08,562 INFO L93 Difference]: Finished difference Result 457 states and 562 transitions. [2024-11-08 09:56:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-08 09:56:08,563 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have 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 [2024-11-08 09:56:08,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:08,564 INFO L225 Difference]: With dead ends: 457 [2024-11-08 09:56:08,565 INFO L226 Difference]: Without dead ends: 441 [2024-11-08 09:56:08,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=820, Invalid=4010, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 09:56:08,567 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 433 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:08,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 295 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 09:56:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2024-11-08 09:56:08,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 192. [2024-11-08 09:56:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.225130890052356) internal successors, (234), 191 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) [2024-11-08 09:56:08,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 234 transitions. [2024-11-08 09:56:08,602 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 234 transitions. Word has length 38 [2024-11-08 09:56:08,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:08,602 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 234 transitions. [2024-11-08 09:56:08,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:08,603 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 234 transitions. [2024-11-08 09:56:08,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 09:56:08,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:08,604 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, 1, 1, 1] [2024-11-08 09:56:08,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 09:56:08,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 09:56:08,809 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:08,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:08,809 INFO L85 PathProgramCache]: Analyzing trace with hash -546292993, now seen corresponding path program 1 times [2024-11-08 09:56:08,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:08,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064546877] [2024-11-08 09:56:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:08,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:09,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064546877] [2024-11-08 09:56:09,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064546877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818462161] [2024-11-08 09:56:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:09,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:09,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:09,132 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:09,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 09:56:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:09,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 09:56:09,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:09,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 09:56:09,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:09,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:09,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:09,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 09:56:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 09:56:09,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:09,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-08 09:56:09,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-08 09:56:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 09:56:09,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818462161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:09,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:09,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2024-11-08 09:56:09,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332384875] [2024-11-08 09:56:09,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:09,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 09:56:09,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:09,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 09:56:09,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-11-08 09:56:09,542 INFO L87 Difference]: Start difference. First operand 192 states and 234 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 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) [2024-11-08 09:56:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:10,773 INFO L93 Difference]: Finished difference Result 410 states and 479 transitions. [2024-11-08 09:56:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 09:56:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 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) Word has length 38 [2024-11-08 09:56:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:10,775 INFO L225 Difference]: With dead ends: 410 [2024-11-08 09:56:10,775 INFO L226 Difference]: Without dead ends: 382 [2024-11-08 09:56:10,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=572, Invalid=2290, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 09:56:10,777 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 230 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:10,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 256 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 09:56:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-08 09:56:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 238. [2024-11-08 09:56:10,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.2067510548523206) internal successors, (286), 237 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2024-11-08 09:56:10,804 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 38 [2024-11-08 09:56:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:10,806 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2024-11-08 09:56:10,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 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) [2024-11-08 09:56:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2024-11-08 09:56:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 09:56:10,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:10,807 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:10,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 09:56:11,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:11,012 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:11,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:11,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2075466350, now seen corresponding path program 1 times [2024-11-08 09:56:11,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:11,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980944908] [2024-11-08 09:56:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:11,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:11,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:11,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980944908] [2024-11-08 09:56:11,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980944908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:11,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037426975] [2024-11-08 09:56:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:11,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:11,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:11,321 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:11,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 09:56:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:11,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 09:56:11,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:11,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 09:56:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:11,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:11,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-08 09:56:11,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 09:56:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:11,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037426975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:11,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 22 [2024-11-08 09:56:11,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110464647] [2024-11-08 09:56:11,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:11,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 09:56:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 09:56:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-08 09:56:11,808 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 22 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:13,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:13,513 INFO L93 Difference]: Finished difference Result 616 states and 763 transitions. [2024-11-08 09:56:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 09:56:13,513 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 22 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-08 09:56:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:13,516 INFO L225 Difference]: With dead ends: 616 [2024-11-08 09:56:13,516 INFO L226 Difference]: Without dead ends: 614 [2024-11-08 09:56:13,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=642, Invalid=4188, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 09:56:13,518 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 109 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:13,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 253 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2617 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 09:56:13,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-08 09:56:13,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 342. [2024-11-08 09:56:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.2463343108504399) internal successors, (425), 341 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 425 transitions. [2024-11-08 09:56:13,559 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 425 transitions. Word has length 44 [2024-11-08 09:56:13,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:13,560 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 425 transitions. [2024-11-08 09:56:13,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 22 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 425 transitions. [2024-11-08 09:56:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 09:56:13,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:13,561 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:13,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 09:56:13,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 09:56:13,762 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:13,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2114258098, now seen corresponding path program 1 times [2024-11-08 09:56:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:13,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636488268] [2024-11-08 09:56:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:13,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 09:56:13,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:13,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636488268] [2024-11-08 09:56:13,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636488268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:56:13,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:56:13,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:56:13,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006459129] [2024-11-08 09:56:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:56:13,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:56:13,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:56:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:56:13,804 INFO L87 Difference]: Start difference. First operand 342 states and 425 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-11-08 09:56:13,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:13,854 INFO L93 Difference]: Finished difference Result 380 states and 467 transitions. [2024-11-08 09:56:13,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:56:13,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) Word has length 45 [2024-11-08 09:56:13,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:13,856 INFO L225 Difference]: With dead ends: 380 [2024-11-08 09:56:13,856 INFO L226 Difference]: Without dead ends: 302 [2024-11-08 09:56:13,857 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 [2024-11-08 09:56:13,857 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:13,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 44 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:56:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-08 09:56:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 286. [2024-11-08 09:56:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.2385964912280703) internal successors, (353), 285 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 353 transitions. [2024-11-08 09:56:13,890 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 353 transitions. Word has length 45 [2024-11-08 09:56:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:13,890 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 353 transitions. [2024-11-08 09:56:13,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-11-08 09:56:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 353 transitions. [2024-11-08 09:56:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 09:56:13,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:13,892 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:13,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 09:56:13,892 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:13,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:13,892 INFO L85 PathProgramCache]: Analyzing trace with hash -255895901, now seen corresponding path program 4 times [2024-11-08 09:56:13,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:13,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884783404] [2024-11-08 09:56:13,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:13,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:14,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:14,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884783404] [2024-11-08 09:56:14,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884783404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:14,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261295356] [2024-11-08 09:56:14,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:56:14,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:14,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:14,193 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:14,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 09:56:14,274 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:56:14,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:56:14,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 09:56:14,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:14,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:14,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261295356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:14,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:14,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 33 [2024-11-08 09:56:14,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970650261] [2024-11-08 09:56:14,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:14,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 09:56:14,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:14,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 09:56:14,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=808, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 09:56:14,962 INFO L87 Difference]: Start difference. First operand 286 states and 353 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:15,376 INFO L93 Difference]: Finished difference Result 477 states and 567 transitions. [2024-11-08 09:56:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 09:56:15,377 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-08 09:56:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:15,378 INFO L225 Difference]: With dead ends: 477 [2024-11-08 09:56:15,378 INFO L226 Difference]: Without dead ends: 345 [2024-11-08 09:56:15,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 09:56:15,380 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 270 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:15,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 161 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:56:15,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-08 09:56:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 303. [2024-11-08 09:56:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.218543046357616) internal successors, (368), 302 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 368 transitions. [2024-11-08 09:56:15,415 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 368 transitions. Word has length 50 [2024-11-08 09:56:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:15,416 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 368 transitions. [2024-11-08 09:56:15,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 368 transitions. [2024-11-08 09:56:15,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 09:56:15,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:15,417 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:15,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 09:56:15,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:15,625 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:15,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:15,625 INFO L85 PathProgramCache]: Analyzing trace with hash 588720312, now seen corresponding path program 5 times [2024-11-08 09:56:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:15,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289473167] [2024-11-08 09:56:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:15,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:16,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289473167] [2024-11-08 09:56:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289473167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:16,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398561059] [2024-11-08 09:56:16,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:56:16,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:16,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:16,234 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:16,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 09:56:16,342 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 09:56:16,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:56:16,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 09:56:16,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:16,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 09:56:16,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:16,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:16,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:16,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:17,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:17,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-08 09:56:17,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 09:56:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:17,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398561059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:17,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:17,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 40 [2024-11-08 09:56:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58157938] [2024-11-08 09:56:17,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:17,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 09:56:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 09:56:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1416, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 09:56:17,370 INFO L87 Difference]: Start difference. First operand 303 states and 368 transitions. Second operand has 40 states, 40 states have (on average 4.0) internal successors, (160), 40 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:22,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:22,086 INFO L93 Difference]: Finished difference Result 828 states and 1000 transitions. [2024-11-08 09:56:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-08 09:56:22,087 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.0) internal successors, (160), 40 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 09:56:22,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:22,089 INFO L225 Difference]: With dead ends: 828 [2024-11-08 09:56:22,089 INFO L226 Difference]: Without dead ends: 756 [2024-11-08 09:56:22,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5686 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2198, Invalid=16708, Unknown=0, NotChecked=0, Total=18906 [2024-11-08 09:56:22,093 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 679 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:22,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 769 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 09:56:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-08 09:56:22,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 341. [2024-11-08 09:56:22,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.1911764705882353) internal successors, (405), 340 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 405 transitions. [2024-11-08 09:56:22,131 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 405 transitions. Word has length 57 [2024-11-08 09:56:22,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:22,131 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 405 transitions. [2024-11-08 09:56:22,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.0) internal successors, (160), 40 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 405 transitions. [2024-11-08 09:56:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 09:56:22,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:22,133 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:22,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 09:56:22,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:22,334 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:22,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:22,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1401827724, now seen corresponding path program 2 times [2024-11-08 09:56:22,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:22,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862762218] [2024-11-08 09:56:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:22,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:22,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:22,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862762218] [2024-11-08 09:56:22,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862762218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:22,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867066416] [2024-11-08 09:56:22,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:56:22,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:22,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:22,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:22,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 09:56:22,894 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:56:22,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:56:22,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 09:56:22,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:22,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 09:56:22,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:22,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:23,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:23,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 09:56:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:23,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:23,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-08 09:56:23,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 09:56:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:23,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867066416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:23,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:23,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 15] total 31 [2024-11-08 09:56:23,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673418112] [2024-11-08 09:56:23,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:23,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 09:56:23,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:23,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 09:56:23,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-11-08 09:56:23,513 INFO L87 Difference]: Start difference. First operand 341 states and 405 transitions. Second operand has 31 states, 31 states have (on average 4.096774193548387) internal successors, (127), 31 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:27,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:27,334 INFO L93 Difference]: Finished difference Result 1019 states and 1235 transitions. [2024-11-08 09:56:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-08 09:56:27,334 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.096774193548387) internal successors, (127), 31 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 09:56:27,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:27,337 INFO L225 Difference]: With dead ends: 1019 [2024-11-08 09:56:27,337 INFO L226 Difference]: Without dead ends: 1017 [2024-11-08 09:56:27,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9319 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2477, Invalid=22015, Unknown=0, NotChecked=0, Total=24492 [2024-11-08 09:56:27,342 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 269 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 4094 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 4094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:27,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 479 Invalid, 4473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 4094 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 09:56:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2024-11-08 09:56:27,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 488. [2024-11-08 09:56:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.1991786447638604) internal successors, (584), 487 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 584 transitions. [2024-11-08 09:56:27,407 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 584 transitions. Word has length 57 [2024-11-08 09:56:27,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:27,407 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 584 transitions. [2024-11-08 09:56:27,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.096774193548387) internal successors, (127), 31 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:27,408 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 584 transitions. [2024-11-08 09:56:27,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 09:56:27,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:27,409 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:27,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 09:56:27,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 09:56:27,610 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:27,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:27,610 INFO L85 PathProgramCache]: Analyzing trace with hash -197389365, now seen corresponding path program 6 times [2024-11-08 09:56:27,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:27,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549574010] [2024-11-08 09:56:27,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:27,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:28,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:28,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549574010] [2024-11-08 09:56:28,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549574010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:28,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542756961] [2024-11-08 09:56:28,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 09:56:28,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:28,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:28,156 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:28,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 09:56:28,310 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-08 09:56:28,310 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:56:28,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 09:56:28,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:28,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 09:56:28,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-08 09:56:28,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-08 09:56:28,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-08 09:56:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:28,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:29,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-08 09:56:29,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 09:56:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542756961] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:29,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:29,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 42 [2024-11-08 09:56:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117975236] [2024-11-08 09:56:29,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:29,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-08 09:56:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-08 09:56:29,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1565, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 09:56:29,179 INFO L87 Difference]: Start difference. First operand 488 states and 584 transitions. Second operand has 42 states, 42 states have (on average 4.238095238095238) internal successors, (178), 42 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:37,775 INFO L93 Difference]: Finished difference Result 1731 states and 2141 transitions. [2024-11-08 09:56:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2024-11-08 09:56:37,775 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.238095238095238) internal successors, (178), 42 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 09:56:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:37,780 INFO L225 Difference]: With dead ends: 1731 [2024-11-08 09:56:37,780 INFO L226 Difference]: Without dead ends: 1539 [2024-11-08 09:56:37,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19516 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=5185, Invalid=47945, Unknown=0, NotChecked=0, Total=53130 [2024-11-08 09:56:37,784 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1346 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 2979 mSolverCounterSat, 1571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 4550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1571 IncrementalHoareTripleChecker+Valid, 2979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:37,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 816 Invalid, 4550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1571 Valid, 2979 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 09:56:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2024-11-08 09:56:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 672. [2024-11-08 09:56:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 1.1773472429210134) internal successors, (790), 671 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 790 transitions. [2024-11-08 09:56:37,873 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 790 transitions. Word has length 63 [2024-11-08 09:56:37,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:37,873 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 790 transitions. [2024-11-08 09:56:37,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.238095238095238) internal successors, (178), 42 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 790 transitions. [2024-11-08 09:56:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 09:56:37,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:37,875 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:37,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 09:56:38,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 09:56:38,075 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:38,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:38,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1785173305, now seen corresponding path program 2 times [2024-11-08 09:56:38,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:38,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882279311] [2024-11-08 09:56:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:38,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 42 proven. 79 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:56:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882279311] [2024-11-08 09:56:38,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882279311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921953972] [2024-11-08 09:56:38,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:56:38,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:38,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:38,575 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:38,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 09:56:38,678 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:56:38,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:56:38,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 09:56:38,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:38,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 09:56:38,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:38,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:38,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 09:56:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:39,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:39,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-08 09:56:39,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 09:56:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:39,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921953972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:39,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:39,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 16] total 45 [2024-11-08 09:56:39,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689148599] [2024-11-08 09:56:39,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:39,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-08 09:56:39,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:39,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-08 09:56:39,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 09:56:39,537 INFO L87 Difference]: Start difference. First operand 672 states and 790 transitions. Second operand has 45 states, 45 states have (on average 4.044444444444444) internal successors, (182), 45 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:45,661 INFO L93 Difference]: Finished difference Result 1159 states and 1370 transitions. [2024-11-08 09:56:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-08 09:56:45,661 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.044444444444444) internal successors, (182), 45 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 09:56:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:45,664 INFO L225 Difference]: With dead ends: 1159 [2024-11-08 09:56:45,664 INFO L226 Difference]: Without dead ends: 1119 [2024-11-08 09:56:45,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10070 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3495, Invalid=28011, Unknown=0, NotChecked=0, Total=31506 [2024-11-08 09:56:45,666 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 482 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 5575 mSolverCounterSat, 865 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 6440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 865 IncrementalHoareTripleChecker+Valid, 5575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:45,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 496 Invalid, 6440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [865 Valid, 5575 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 09:56:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2024-11-08 09:56:45,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 692. [2024-11-08 09:56:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.1736613603473227) internal successors, (811), 691 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 811 transitions. [2024-11-08 09:56:45,784 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 811 transitions. Word has length 63 [2024-11-08 09:56:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:45,785 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 811 transitions. [2024-11-08 09:56:45,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.044444444444444) internal successors, (182), 45 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 811 transitions. [2024-11-08 09:56:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 09:56:45,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:45,787 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:45,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 09:56:45,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 09:56:45,988 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:45,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1613028194, now seen corresponding path program 7 times [2024-11-08 09:56:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:45,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142721792] [2024-11-08 09:56:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:45,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:46,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142721792] [2024-11-08 09:56:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142721792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783388891] [2024-11-08 09:56:46,533 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 09:56:46,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:46,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:46,534 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:46,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 09:56:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:46,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 09:56:46,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:46,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 09:56:46,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:46,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 09:56:47,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 09:56:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:47,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:56:47,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-08 09:56:47,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 09:56:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:47,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783388891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:56:47,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:56:47,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 44 [2024-11-08 09:56:47,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218093705] [2024-11-08 09:56:47,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:56:47,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 09:56:47,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:47,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 09:56:47,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1752, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 09:56:47,654 INFO L87 Difference]: Start difference. First operand 692 states and 811 transitions. Second operand has 44 states, 44 states have (on average 4.431818181818182) internal successors, (195), 44 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:54,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:54,601 INFO L93 Difference]: Finished difference Result 2294 states and 2705 transitions. [2024-11-08 09:56:54,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-11-08 09:56:54,602 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.431818181818182) internal successors, (195), 44 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-08 09:56:54,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:54,606 INFO L225 Difference]: With dead ends: 2294 [2024-11-08 09:56:54,606 INFO L226 Difference]: Without dead ends: 1658 [2024-11-08 09:56:54,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10092 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3298, Invalid=29282, Unknown=0, NotChecked=0, Total=32580 [2024-11-08 09:56:54,608 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 876 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 3115 mSolverCounterSat, 987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 4102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 987 IncrementalHoareTripleChecker+Valid, 3115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:54,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 828 Invalid, 4102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [987 Valid, 3115 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 09:56:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2024-11-08 09:56:54,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1056. [2024-11-08 09:56:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1055 states have (on average 1.1601895734597156) internal successors, (1224), 1055 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1224 transitions. [2024-11-08 09:56:54,760 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1224 transitions. Word has length 69 [2024-11-08 09:56:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:54,760 INFO L471 AbstractCegarLoop]: Abstraction has 1056 states and 1224 transitions. [2024-11-08 09:56:54,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.431818181818182) internal successors, (195), 44 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:54,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1224 transitions. [2024-11-08 09:56:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 09:56:54,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:54,763 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:54,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 09:56:54,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:54,964 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:54,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1717131496, now seen corresponding path program 1 times [2024-11-08 09:56:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:54,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248468047] [2024-11-08 09:56:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:54,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 09:56:55,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248468047] [2024-11-08 09:56:55,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248468047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:56:55,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:56:55,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:56:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203020402] [2024-11-08 09:56:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:56:55,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:56:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:56:55,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:56:55,002 INFO L87 Difference]: Start difference. First operand 1056 states and 1224 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-11-08 09:56:55,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:55,181 INFO L93 Difference]: Finished difference Result 1524 states and 1774 transitions. [2024-11-08 09:56:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:56:55,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) Word has length 69 [2024-11-08 09:56:55,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:55,185 INFO L225 Difference]: With dead ends: 1524 [2024-11-08 09:56:55,186 INFO L226 Difference]: Without dead ends: 1108 [2024-11-08 09:56:55,187 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 [2024-11-08 09:56:55,187 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:56:55,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 55 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:56:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-11-08 09:56:55,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1056. [2024-11-08 09:56:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1055 states have (on average 1.147867298578199) internal successors, (1211), 1055 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1211 transitions. [2024-11-08 09:56:55,362 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1211 transitions. Word has length 69 [2024-11-08 09:56:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:55,362 INFO L471 AbstractCegarLoop]: Abstraction has 1056 states and 1211 transitions. [2024-11-08 09:56:55,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-11-08 09:56:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1211 transitions. [2024-11-08 09:56:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 09:56:55,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:55,365 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:55,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 09:56:55,365 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:55,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:55,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1273230822, now seen corresponding path program 1 times [2024-11-08 09:56:55,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:55,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056855599] [2024-11-08 09:56:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:55,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-08 09:56:55,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:55,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056855599] [2024-11-08 09:56:55,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056855599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:56:55,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:56:55,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:56:55,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086805142] [2024-11-08 09:56:55,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:56:55,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:56:55,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:56:55,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:56:55,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:56:55,433 INFO L87 Difference]: Start difference. First operand 1056 states and 1211 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:55,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:56:55,587 INFO L93 Difference]: Finished difference Result 1104 states and 1266 transitions. [2024-11-08 09:56:55,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:56:55,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-08 09:56:55,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:56:55,590 INFO L225 Difference]: With dead ends: 1104 [2024-11-08 09:56:55,590 INFO L226 Difference]: Without dead ends: 774 [2024-11-08 09:56:55,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:56:55,592 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 55 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 40 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 [2024-11-08 09:56:55,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:56:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2024-11-08 09:56:55,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 761. [2024-11-08 09:56:55,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 1.131578947368421) internal successors, (860), 760 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 860 transitions. [2024-11-08 09:56:55,709 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 860 transitions. Word has length 69 [2024-11-08 09:56:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:56:55,709 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 860 transitions. [2024-11-08 09:56:55,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 09:56:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 860 transitions. [2024-11-08 09:56:55,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 09:56:55,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:56:55,711 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:56:55,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-08 09:56:55,711 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:56:55,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:56:55,712 INFO L85 PathProgramCache]: Analyzing trace with hash 150267478, now seen corresponding path program 1 times [2024-11-08 09:56:55,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:56:55,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471040691] [2024-11-08 09:56:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:55,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:56:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:56:56,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:56:56,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471040691] [2024-11-08 09:56:56,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471040691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:56:56,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360656391] [2024-11-08 09:56:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:56:56,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:56:56,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:56:56,147 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:56:56,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 09:56:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:56:56,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 09:56:56,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:56:56,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 09:56:56,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-08 09:56:56,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:56:56,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2024-11-08 09:56:56,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:56:56,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2024-11-08 09:56:56,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:56:56,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 39 [2024-11-08 09:56:56,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 09:56:56,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 09:56:56,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-11-08 09:57:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 86 proven. 53 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 09:57:05,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:57:05,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-08 09:57:05,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-08 09:57:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 86 proven. 53 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 09:57:05,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360656391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:57:05,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:57:05,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 41 [2024-11-08 09:57:05,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141900305] [2024-11-08 09:57:05,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:57:05,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 09:57:05,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:57:05,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 09:57:05,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1481, Unknown=2, NotChecked=0, Total=1640 [2024-11-08 09:57:05,975 INFO L87 Difference]: Start difference. First operand 761 states and 860 transitions. Second operand has 41 states, 41 states have (on average 4.073170731707317) internal successors, (167), 41 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)