./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/eca-rers2012/Problem13_label18.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 194fbdc3b3886612fc58320fafee97b7b69b69e44501245b99f854c5cffd6315 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 15:00:21,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:00:21,384 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 15:00:21,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:00:21,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:00:21,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:00:21,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:00:21,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:00:21,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:00:21,413 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:00:21,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:00:21,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:00:21,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:00:21,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:00:21,415 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:00:21,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:00:21,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:00:21,415 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:00:21,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 15:00:21,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:00:21,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:00:21,416 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:00:21,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:00:21,417 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:00:21,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:00:21,417 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:00:21,417 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:00:21,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 15:00:21,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 15:00:21,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:00:21,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:00:21,418 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:00:21,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:00:21,418 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 194fbdc3b3886612fc58320fafee97b7b69b69e44501245b99f854c5cffd6315 [2025-03-16 15:00:21,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:00:21,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:00:21,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:00:21,640 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:00:21,640 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:00:21,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label18.c [2025-03-16 15:00:22,747 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec04cc9b2/dcd43dd790dd4aaa91db27e74cc5c737/FLAGae1593119 [2025-03-16 15:00:23,135 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:00:23,136 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label18.c [2025-03-16 15:00:23,165 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec04cc9b2/dcd43dd790dd4aaa91db27e74cc5c737/FLAGae1593119 [2025-03-16 15:00:23,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec04cc9b2/dcd43dd790dd4aaa91db27e74cc5c737 [2025-03-16 15:00:23,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:00:23,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:00:23,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:00:23,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:00:23,320 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:00:23,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:00:23" (1/1) ... [2025-03-16 15:00:23,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@480f5233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:23, skipping insertion in model container [2025-03-16 15:00:23,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:00:23" (1/1) ... [2025-03-16 15:00:23,400 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:00:23,582 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/eca-rers2012/Problem13_label18.c[8933,8946] [2025-03-16 15:00:24,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:00:24,047 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:00:24,066 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/eca-rers2012/Problem13_label18.c[8933,8946] [2025-03-16 15:00:24,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:00:24,372 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:00:24,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24 WrapperNode [2025-03-16 15:00:24,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:00:24,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:00:24,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:00:24,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:00:24,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:24,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:24,776 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2025-03-16 15:00:24,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:00:24,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:00:24,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:00:24,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:00:24,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:24,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:24,904 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:25,050 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 15:00:25,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:25,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:25,155 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:25,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:25,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:25,221 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:25,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:00:25,264 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:00:25,265 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:00:25,265 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:00:25,265 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (1/1) ... [2025-03-16 15:00:25,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:00:25,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:00:25,289 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) [2025-03-16 15:00:25,295 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 [2025-03-16 15:00:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:00:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 15:00:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:00:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:00:25,363 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:00:25,364 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:00:29,453 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2025-03-16 15:00:29,454 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2025-03-16 15:00:29,454 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2025-03-16 15:00:29,589 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2025-03-16 15:00:29,589 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:00:29,613 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:00:29,613 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:00:29,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:00:29 BoogieIcfgContainer [2025-03-16 15:00:29,614 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:00:29,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:00:29,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:00:29,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:00:29,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:00:23" (1/3) ... [2025-03-16 15:00:29,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f58f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:00:29, skipping insertion in model container [2025-03-16 15:00:29,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:00:24" (2/3) ... [2025-03-16 15:00:29,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f58f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:00:29, skipping insertion in model container [2025-03-16 15:00:29,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:00:29" (3/3) ... [2025-03-16 15:00:29,624 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label18.c [2025-03-16 15:00:29,636 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:00:29,637 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label18.c that has 1 procedures, 1037 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 15:00:29,707 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:00:29,717 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;@6b7e809c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:00:29,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:00:29,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 1037 states, 1035 states have (on average 1.8753623188405797) internal successors, (1941), 1036 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:29,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 15:00:29,730 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:00:29,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:00:29,730 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:00:29,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:00:29,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1741732960, now seen corresponding path program 1 times [2025-03-16 15:00:29,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:00:29,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168671719] [2025-03-16 15:00:29,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:00:29,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 15:00:29,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 15:00:29,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:29,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:00:29,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:00:29,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168671719] [2025-03-16 15:00:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168671719] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:00:29,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:00:29,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:00:29,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809504060] [2025-03-16 15:00:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:00:29,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 15:00:29,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:00:29,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 15:00:29,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:00:29,885 INFO L87 Difference]: Start difference. First operand has 1037 states, 1035 states have (on average 1.8753623188405797) internal successors, (1941), 1036 states have internal predecessors, (1941), 0 states have call successors, (0), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:00:29,962 INFO L93 Difference]: Finished difference Result 2073 states and 3881 transitions. [2025-03-16 15:00:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 15:00:29,964 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-03-16 15:00:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:00:29,977 INFO L225 Difference]: With dead ends: 2073 [2025-03-16 15:00:29,977 INFO L226 Difference]: Without dead ends: 1034 [2025-03-16 15:00:29,982 INFO L434 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 [2025-03-16 15:00:29,986 INFO L435 NwaCegarLoop]: 1879 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, 1879 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 [2025-03-16 15:00:29,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:00:30,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2025-03-16 15:00:30,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2025-03-16 15:00:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:30,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2025-03-16 15:00:30,056 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 62 [2025-03-16 15:00:30,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:00:30,056 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2025-03-16 15:00:30,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:30,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2025-03-16 15:00:30,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 15:00:30,057 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:00:30,058 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:00:30,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 15:00:30,058 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:00:30,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:00:30,059 INFO L85 PathProgramCache]: Analyzing trace with hash -449879071, now seen corresponding path program 1 times [2025-03-16 15:00:30,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:00:30,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132146113] [2025-03-16 15:00:30,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:30,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:00:30,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 15:00:30,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 15:00:30,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:30,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:00:30,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:00:30,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132146113] [2025-03-16 15:00:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132146113] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:00:30,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:00:30,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:00:30,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516395283] [2025-03-16 15:00:30,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:00:30,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:00:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:00:30,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:00:30,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:30,295 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:00:34,079 INFO L93 Difference]: Finished difference Result 2976 states and 5471 transitions. [2025-03-16 15:00:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:00:34,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-03-16 15:00:34,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:00:34,086 INFO L225 Difference]: With dead ends: 2976 [2025-03-16 15:00:34,087 INFO L226 Difference]: Without dead ends: 1943 [2025-03-16 15:00:34,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:34,088 INFO L435 NwaCegarLoop]: 401 mSDtfsCounter, 892 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-03-16 15:00:34,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 535 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-03-16 15:00:34,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2025-03-16 15:00:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1872. [2025-03-16 15:00:34,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 1.7397113842864778) internal successors, (3255), 1871 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3255 transitions. [2025-03-16 15:00:34,137 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3255 transitions. Word has length 62 [2025-03-16 15:00:34,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:00:34,137 INFO L471 AbstractCegarLoop]: Abstraction has 1872 states and 3255 transitions. [2025-03-16 15:00:34,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3255 transitions. [2025-03-16 15:00:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-16 15:00:34,139 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:00:34,139 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:00:34,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 15:00:34,140 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:00:34,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:00:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1656214544, now seen corresponding path program 1 times [2025-03-16 15:00:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:00:34,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773968317] [2025-03-16 15:00:34,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:34,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:00:34,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-16 15:00:34,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-16 15:00:34,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:34,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:00:34,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:00:34,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773968317] [2025-03-16 15:00:34,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773968317] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:00:34,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:00:34,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:00:34,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54588494] [2025-03-16 15:00:34,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:00:34,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:00:34,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:00:34,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:00:34,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:34,443 INFO L87 Difference]: Start difference. First operand 1872 states and 3255 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 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) [2025-03-16 15:00:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:00:37,300 INFO L93 Difference]: Finished difference Result 4603 states and 7963 transitions. [2025-03-16 15:00:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:00:37,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 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 127 [2025-03-16 15:00:37,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:00:37,310 INFO L225 Difference]: With dead ends: 4603 [2025-03-16 15:00:37,310 INFO L226 Difference]: Without dead ends: 2732 [2025-03-16 15:00:37,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:37,315 INFO L435 NwaCegarLoop]: 601 mSDtfsCounter, 815 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-16 15:00:37,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 737 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-16 15:00:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2025-03-16 15:00:37,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2669. [2025-03-16 15:00:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2669 states, 2668 states have (on average 1.6581709145427286) internal successors, (4424), 2668 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 4424 transitions. [2025-03-16 15:00:37,365 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 4424 transitions. Word has length 127 [2025-03-16 15:00:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:00:37,366 INFO L471 AbstractCegarLoop]: Abstraction has 2669 states and 4424 transitions. [2025-03-16 15:00:37,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 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) [2025-03-16 15:00:37,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 4424 transitions. [2025-03-16 15:00:37,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-16 15:00:37,369 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:00:37,369 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:00:37,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 15:00:37,369 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:00:37,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:00:37,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2110846522, now seen corresponding path program 1 times [2025-03-16 15:00:37,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:00:37,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662488894] [2025-03-16 15:00:37,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:37,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:00:37,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-16 15:00:37,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-16 15:00:37,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:37,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:00:37,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:00:37,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662488894] [2025-03-16 15:00:37,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662488894] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:00:37,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:00:37,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:00:37,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757894841] [2025-03-16 15:00:37,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:00:37,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:00:37,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:00:37,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:00:37,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:37,515 INFO L87 Difference]: Start difference. First operand 2669 states and 4424 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:00:40,057 INFO L93 Difference]: Finished difference Result 7731 states and 12863 transitions. [2025-03-16 15:00:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:00:40,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2025-03-16 15:00:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:00:40,081 INFO L225 Difference]: With dead ends: 7731 [2025-03-16 15:00:40,081 INFO L226 Difference]: Without dead ends: 5063 [2025-03-16 15:00:40,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:40,088 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 870 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 876 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:00:40,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1135 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [876 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 15:00:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5063 states. [2025-03-16 15:00:40,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5063 to 5062. [2025-03-16 15:00:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5062 states, 5061 states have (on average 1.4546532305868405) internal successors, (7362), 5061 states have internal predecessors, (7362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5062 states to 5062 states and 7362 transitions. [2025-03-16 15:00:40,164 INFO L78 Accepts]: Start accepts. Automaton has 5062 states and 7362 transitions. Word has length 128 [2025-03-16 15:00:40,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:00:40,165 INFO L471 AbstractCegarLoop]: Abstraction has 5062 states and 7362 transitions. [2025-03-16 15:00:40,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5062 states and 7362 transitions. [2025-03-16 15:00:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 15:00:40,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:00:40,167 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:00:40,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 15:00:40,167 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:00:40,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:00:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1506214854, now seen corresponding path program 1 times [2025-03-16 15:00:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:00:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943798635] [2025-03-16 15:00:40,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:40,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:00:40,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 15:00:40,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 15:00:40,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:40,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:00:40,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:00:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943798635] [2025-03-16 15:00:40,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943798635] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:00:40,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:00:40,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:00:40,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351495263] [2025-03-16 15:00:40,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:00:40,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:00:40,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:00:40,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:00:40,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:40,285 INFO L87 Difference]: Start difference. First operand 5062 states and 7362 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:00:43,347 INFO L93 Difference]: Finished difference Result 12512 states and 18430 transitions. [2025-03-16 15:00:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:00:43,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2025-03-16 15:00:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:00:43,364 INFO L225 Difference]: With dead ends: 12512 [2025-03-16 15:00:43,365 INFO L226 Difference]: Without dead ends: 7451 [2025-03-16 15:00:43,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:43,371 INFO L435 NwaCegarLoop]: 1041 mSDtfsCounter, 871 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2661 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:00:43,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1174 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2661 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-03-16 15:00:43,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2025-03-16 15:00:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 7443. [2025-03-16 15:00:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7443 states, 7442 states have (on average 1.3368718086535878) internal successors, (9949), 7442 states have internal predecessors, (9949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 9949 transitions. [2025-03-16 15:00:43,487 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 9949 transitions. Word has length 131 [2025-03-16 15:00:43,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:00:43,488 INFO L471 AbstractCegarLoop]: Abstraction has 7443 states and 9949 transitions. [2025-03-16 15:00:43,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:43,488 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 9949 transitions. [2025-03-16 15:00:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-16 15:00:43,490 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:00:43,490 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:00:43,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 15:00:43,491 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:00:43,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:00:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1082300122, now seen corresponding path program 1 times [2025-03-16 15:00:43,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:00:43,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868115549] [2025-03-16 15:00:43,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:43,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:00:43,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-16 15:00:43,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-16 15:00:43,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:43,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:00:43,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:00:43,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868115549] [2025-03-16 15:00:43,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868115549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:00:43,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:00:43,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:00:43,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963532050] [2025-03-16 15:00:43,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:00:43,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:00:43,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:00:43,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:00:43,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:43,597 INFO L87 Difference]: Start difference. First operand 7443 states and 9949 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:46,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:00:46,049 INFO L93 Difference]: Finished difference Result 20423 states and 27780 transitions. [2025-03-16 15:00:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:00:46,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2025-03-16 15:00:46,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:00:46,079 INFO L225 Difference]: With dead ends: 20423 [2025-03-16 15:00:46,079 INFO L226 Difference]: Without dead ends: 13768 [2025-03-16 15:00:46,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:46,087 INFO L435 NwaCegarLoop]: 1009 mSDtfsCounter, 805 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:00:46,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1160 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-16 15:00:46,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13768 states. [2025-03-16 15:00:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13768 to 12961. [2025-03-16 15:00:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12961 states, 12960 states have (on average 1.2383487654320988) internal successors, (16049), 12960 states have internal predecessors, (16049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12961 states to 12961 states and 16049 transitions. [2025-03-16 15:00:46,235 INFO L78 Accepts]: Start accepts. Automaton has 12961 states and 16049 transitions. Word has length 135 [2025-03-16 15:00:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:00:46,235 INFO L471 AbstractCegarLoop]: Abstraction has 12961 states and 16049 transitions. [2025-03-16 15:00:46,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 12961 states and 16049 transitions. [2025-03-16 15:00:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 15:00:46,236 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:00:46,236 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:00:46,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 15:00:46,236 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:00:46,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:00:46,237 INFO L85 PathProgramCache]: Analyzing trace with hash 896679250, now seen corresponding path program 1 times [2025-03-16 15:00:46,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:00:46,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685518047] [2025-03-16 15:00:46,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:46,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:00:46,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 15:00:46,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 15:00:46,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:46,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:00:46,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:00:46,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685518047] [2025-03-16 15:00:46,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685518047] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:00:46,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:00:46,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:00:46,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644198790] [2025-03-16 15:00:46,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:00:46,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:00:46,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:00:46,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:00:46,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:46,508 INFO L87 Difference]: Start difference. First operand 12961 states and 16049 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:00:48,573 INFO L93 Difference]: Finished difference Result 25134 states and 31300 transitions. [2025-03-16 15:00:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:00:48,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2025-03-16 15:00:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:00:48,600 INFO L225 Difference]: With dead ends: 25134 [2025-03-16 15:00:48,601 INFO L226 Difference]: Without dead ends: 12961 [2025-03-16 15:00:48,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:48,614 INFO L435 NwaCegarLoop]: 1082 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:00:48,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1211 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-16 15:00:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2025-03-16 15:00:48,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 12961. [2025-03-16 15:00:48,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12961 states, 12960 states have (on average 1.237962962962963) internal successors, (16044), 12960 states have internal predecessors, (16044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12961 states to 12961 states and 16044 transitions. [2025-03-16 15:00:48,742 INFO L78 Accepts]: Start accepts. Automaton has 12961 states and 16044 transitions. Word has length 151 [2025-03-16 15:00:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:00:48,743 INFO L471 AbstractCegarLoop]: Abstraction has 12961 states and 16044 transitions. [2025-03-16 15:00:48,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 12961 states and 16044 transitions. [2025-03-16 15:00:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-16 15:00:48,744 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:00:48,744 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:00:48,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 15:00:48,744 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:00:48,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:00:48,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1608132846, now seen corresponding path program 1 times [2025-03-16 15:00:48,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:00:48,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283518190] [2025-03-16 15:00:48,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:48,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:00:48,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-16 15:00:48,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-16 15:00:48,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:48,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-16 15:00:48,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:00:48,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283518190] [2025-03-16 15:00:48,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283518190] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:00:48,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653574754] [2025-03-16 15:00:48,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:48,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:00:48,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:00:48,961 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) [2025-03-16 15:00:48,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 15:00:49,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-16 15:00:49,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-16 15:00:49,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:49,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:49,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:00:49,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:00:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:00:49,106 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:00:49,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653574754] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:00:49,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:00:49,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-16 15:00:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106996342] [2025-03-16 15:00:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:00:49,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:00:49,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:00:49,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:00:49,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 15:00:49,108 INFO L87 Difference]: Start difference. First operand 12961 states and 16044 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:00:52,089 INFO L93 Difference]: Finished difference Result 36955 states and 46071 transitions. [2025-03-16 15:00:52,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:00:52,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2025-03-16 15:00:52,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:00:52,128 INFO L225 Difference]: With dead ends: 36955 [2025-03-16 15:00:52,128 INFO L226 Difference]: Without dead ends: 24782 [2025-03-16 15:00:52,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 15:00:52,142 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 947 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-16 15:00:52,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 641 Invalid, 3506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-16 15:00:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24782 states. [2025-03-16 15:00:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24782 to 20844. [2025-03-16 15:00:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20844 states, 20843 states have (on average 1.2339874298325577) internal successors, (25720), 20843 states have internal predecessors, (25720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:52,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20844 states to 20844 states and 25720 transitions. [2025-03-16 15:00:52,362 INFO L78 Accepts]: Start accepts. Automaton has 20844 states and 25720 transitions. Word has length 158 [2025-03-16 15:00:52,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:00:52,363 INFO L471 AbstractCegarLoop]: Abstraction has 20844 states and 25720 transitions. [2025-03-16 15:00:52,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:52,363 INFO L276 IsEmpty]: Start isEmpty. Operand 20844 states and 25720 transitions. [2025-03-16 15:00:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2025-03-16 15:00:52,367 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:00:52,367 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:00:52,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 15:00:52,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:00:52,574 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:00:52,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:00:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1435118816, now seen corresponding path program 1 times [2025-03-16 15:00:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:00:52,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169100357] [2025-03-16 15:00:52,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:00:52,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 274 statements into 1 equivalence classes. [2025-03-16 15:00:52,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 274 of 274 statements. [2025-03-16 15:00:52,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:52,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:00:52,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:00:52,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169100357] [2025-03-16 15:00:52,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169100357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:00:52,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:00:52,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:00:52,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470993322] [2025-03-16 15:00:52,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:00:52,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:00:52,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:00:52,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:00:52,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:00:52,805 INFO L87 Difference]: Start difference. First operand 20844 states and 25720 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:55,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:00:55,433 INFO L93 Difference]: Finished difference Result 51949 states and 65566 transitions. [2025-03-16 15:00:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:00:55,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2025-03-16 15:00:55,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:00:55,479 INFO L225 Difference]: With dead ends: 51949 [2025-03-16 15:00:55,479 INFO L226 Difference]: Without dead ends: 31893 [2025-03-16 15:00:55,498 INFO L434 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 [2025-03-16 15:00:55,501 INFO L435 NwaCegarLoop]: 1773 mSDtfsCounter, 774 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:00:55,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1915 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 15:00:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31893 states. [2025-03-16 15:00:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31893 to 30292. [2025-03-16 15:00:55,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30292 states, 30291 states have (on average 1.1941830906870028) internal successors, (36173), 30291 states have internal predecessors, (36173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:55,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30292 states to 30292 states and 36173 transitions. [2025-03-16 15:00:55,771 INFO L78 Accepts]: Start accepts. Automaton has 30292 states and 36173 transitions. Word has length 274 [2025-03-16 15:00:55,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:00:55,772 INFO L471 AbstractCegarLoop]: Abstraction has 30292 states and 36173 transitions. [2025-03-16 15:00:55,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:00:55,772 INFO L276 IsEmpty]: Start isEmpty. Operand 30292 states and 36173 transitions. [2025-03-16 15:00:55,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2025-03-16 15:00:55,776 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:00:55,776 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:00:55,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 15:00:55,777 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:00:55,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:00:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash 217583349, now seen corresponding path program 1 times [2025-03-16 15:00:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:00:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469452893] [2025-03-16 15:00:55,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:00:55,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:00:55,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 350 statements into 1 equivalence classes. [2025-03-16 15:00:55,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 350 of 350 statements. [2025-03-16 15:00:55,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:00:55,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:00:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-03-16 15:00:56,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:00:56,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469452893] [2025-03-16 15:00:56,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469452893] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:00:56,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:00:56,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:00:56,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655255073] [2025-03-16 15:00:56,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:00:56,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:00:56,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:00:56,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:00:56,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:00:56,002 INFO L87 Difference]: Start difference. First operand 30292 states and 36173 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:01,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:01,178 INFO L93 Difference]: Finished difference Result 89133 states and 107515 transitions. [2025-03-16 15:01:01,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:01:01,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 350 [2025-03-16 15:01:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:01,246 INFO L225 Difference]: With dead ends: 89133 [2025-03-16 15:01:01,246 INFO L226 Difference]: Without dead ends: 59629 [2025-03-16 15:01:01,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:01:01,273 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 1718 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 7179 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 8167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 7179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:01,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 1132 Invalid, 8167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 7179 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-03-16 15:01:01,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59629 states. [2025-03-16 15:01:01,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59629 to 59506. [2025-03-16 15:01:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59506 states, 59505 states have (on average 1.1799512645996135) internal successors, (70213), 59505 states have internal predecessors, (70213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59506 states to 59506 states and 70213 transitions. [2025-03-16 15:01:01,869 INFO L78 Accepts]: Start accepts. Automaton has 59506 states and 70213 transitions. Word has length 350 [2025-03-16 15:01:01,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:01,869 INFO L471 AbstractCegarLoop]: Abstraction has 59506 states and 70213 transitions. [2025-03-16 15:01:01,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 59506 states and 70213 transitions. [2025-03-16 15:01:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2025-03-16 15:01:01,874 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:01,874 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:01,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 15:01:01,874 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:01,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1437711178, now seen corresponding path program 1 times [2025-03-16 15:01:01,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:01,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091893306] [2025-03-16 15:01:01,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:01,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:01,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 368 statements into 1 equivalence classes. [2025-03-16 15:01:01,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 368 of 368 statements. [2025-03-16 15:01:01,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:01,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 250 proven. 113 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-03-16 15:01:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:02,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091893306] [2025-03-16 15:01:02,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091893306] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:01:02,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407751222] [2025-03-16 15:01:02,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:02,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:01:02,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:01:02,895 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) [2025-03-16 15:01:02,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 15:01:02,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 368 statements into 1 equivalence classes. [2025-03-16 15:01:03,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 368 of 368 statements. [2025-03-16 15:01:03,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:03,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:03,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:01:03,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:01:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-03-16 15:01:03,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:01:03,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407751222] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:03,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:01:03,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-16 15:01:03,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97438098] [2025-03-16 15:01:03,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:03,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:03,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:03,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:03,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-16 15:01:03,083 INFO L87 Difference]: Start difference. First operand 59506 states and 70213 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:06,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:06,557 INFO L93 Difference]: Finished difference Result 168777 states and 199742 transitions. [2025-03-16 15:01:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:06,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 368 [2025-03-16 15:01:06,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:06,709 INFO L225 Difference]: With dead ends: 168777 [2025-03-16 15:01:06,709 INFO L226 Difference]: Without dead ends: 110059 [2025-03-16 15:01:06,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-16 15:01:06,754 INFO L435 NwaCegarLoop]: 711 mSDtfsCounter, 1075 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:06,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 923 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-03-16 15:01:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110059 states. [2025-03-16 15:01:07,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110059 to 106094. [2025-03-16 15:01:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106094 states, 106093 states have (on average 1.1506696954558737) internal successors, (122078), 106093 states have internal predecessors, (122078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106094 states to 106094 states and 122078 transitions. [2025-03-16 15:01:07,730 INFO L78 Accepts]: Start accepts. Automaton has 106094 states and 122078 transitions. Word has length 368 [2025-03-16 15:01:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:07,730 INFO L471 AbstractCegarLoop]: Abstraction has 106094 states and 122078 transitions. [2025-03-16 15:01:07,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 106094 states and 122078 transitions. [2025-03-16 15:01:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2025-03-16 15:01:07,737 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:07,737 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:07,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 15:01:07,937 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,SelfDestructingSolverStorable10 [2025-03-16 15:01:07,937 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:07,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:07,938 INFO L85 PathProgramCache]: Analyzing trace with hash -546173907, now seen corresponding path program 1 times [2025-03-16 15:01:07,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:07,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324855927] [2025-03-16 15:01:07,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:07,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:08,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 416 statements into 1 equivalence classes. [2025-03-16 15:01:08,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 416 of 416 statements. [2025-03-16 15:01:08,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:08,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 487 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-03-16 15:01:08,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:08,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324855927] [2025-03-16 15:01:08,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324855927] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:08,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:08,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:01:08,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354125137] [2025-03-16 15:01:08,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:08,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:08,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:08,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:08,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:08,227 INFO L87 Difference]: Start difference. First operand 106094 states and 122078 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:10,928 INFO L93 Difference]: Finished difference Result 204916 states and 236076 transitions. [2025-03-16 15:01:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:10,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 416 [2025-03-16 15:01:10,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:11,036 INFO L225 Difference]: With dead ends: 204916 [2025-03-16 15:01:11,036 INFO L226 Difference]: Without dead ends: 96457 [2025-03-16 15:01:11,099 INFO L434 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 [2025-03-16 15:01:11,100 INFO L435 NwaCegarLoop]: 1509 mSDtfsCounter, 1036 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:11,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1643 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-16 15:01:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96457 states. [2025-03-16 15:01:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96457 to 91726. [2025-03-16 15:01:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91726 states, 91725 states have (on average 1.1082583810302535) internal successors, (101655), 91725 states have internal predecessors, (101655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91726 states to 91726 states and 101655 transitions. [2025-03-16 15:01:12,293 INFO L78 Accepts]: Start accepts. Automaton has 91726 states and 101655 transitions. Word has length 416 [2025-03-16 15:01:12,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:12,293 INFO L471 AbstractCegarLoop]: Abstraction has 91726 states and 101655 transitions. [2025-03-16 15:01:12,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 91726 states and 101655 transitions. [2025-03-16 15:01:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2025-03-16 15:01:12,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:12,299 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:12,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 15:01:12,299 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:12,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:12,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1908513573, now seen corresponding path program 1 times [2025-03-16 15:01:12,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:12,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938057675] [2025-03-16 15:01:12,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:12,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:12,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 417 statements into 1 equivalence classes. [2025-03-16 15:01:12,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 417 of 417 statements. [2025-03-16 15:01:12,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:12,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 347 proven. 110 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-03-16 15:01:13,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:13,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938057675] [2025-03-16 15:01:13,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938057675] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:01:13,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933349601] [2025-03-16 15:01:13,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:13,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:01:13,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:01:13,145 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) [2025-03-16 15:01:13,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 15:01:13,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 417 statements into 1 equivalence classes. [2025-03-16 15:01:13,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 417 of 417 statements. [2025-03-16 15:01:13,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:13,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:13,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:01:13,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:01:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-03-16 15:01:13,429 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:01:13,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933349601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:13,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:01:13,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-16 15:01:13,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058618985] [2025-03-16 15:01:13,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:13,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:13,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:13,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:13,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:01:13,430 INFO L87 Difference]: Start difference. First operand 91726 states and 101655 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:15,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:15,959 INFO L93 Difference]: Finished difference Result 182662 states and 202516 transitions. [2025-03-16 15:01:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:15,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 417 [2025-03-16 15:01:15,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:16,063 INFO L225 Difference]: With dead ends: 182662 [2025-03-16 15:01:16,064 INFO L226 Difference]: Without dead ends: 91724 [2025-03-16 15:01:16,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:01:16,117 INFO L435 NwaCegarLoop]: 1340 mSDtfsCounter, 1083 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:16,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1417 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-16 15:01:16,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91724 states. [2025-03-16 15:01:16,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91724 to 90932. [2025-03-16 15:01:16,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90932 states, 90931 states have (on average 1.0794448537902366) internal successors, (98155), 90931 states have internal predecessors, (98155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90932 states to 90932 states and 98155 transitions. [2025-03-16 15:01:17,025 INFO L78 Accepts]: Start accepts. Automaton has 90932 states and 98155 transitions. Word has length 417 [2025-03-16 15:01:17,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:17,026 INFO L471 AbstractCegarLoop]: Abstraction has 90932 states and 98155 transitions. [2025-03-16 15:01:17,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 90932 states and 98155 transitions. [2025-03-16 15:01:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2025-03-16 15:01:17,037 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:17,037 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:17,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 15:01:17,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:01:17,238 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:17,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 186602568, now seen corresponding path program 1 times [2025-03-16 15:01:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206049953] [2025-03-16 15:01:17,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:17,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 536 statements into 1 equivalence classes. [2025-03-16 15:01:17,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 536 of 536 statements. [2025-03-16 15:01:17,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:17,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 531 proven. 110 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2025-03-16 15:01:18,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:18,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206049953] [2025-03-16 15:01:18,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206049953] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:01:18,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031154170] [2025-03-16 15:01:18,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:18,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:01:18,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:01:18,196 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) [2025-03-16 15:01:18,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 15:01:18,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 536 statements into 1 equivalence classes. [2025-03-16 15:01:18,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 536 of 536 statements. [2025-03-16 15:01:18,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:18,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:18,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:01:18,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:01:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2025-03-16 15:01:18,458 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:01:18,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031154170] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:18,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:01:18,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-16 15:01:18,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939876591] [2025-03-16 15:01:18,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:18,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:18,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:18,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:18,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:01:18,459 INFO L87 Difference]: Start difference. First operand 90932 states and 98155 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:21,501 INFO L93 Difference]: Finished difference Result 210203 states and 228641 transitions. [2025-03-16 15:01:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 536 [2025-03-16 15:01:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:21,659 INFO L225 Difference]: With dead ends: 210203 [2025-03-16 15:01:21,659 INFO L226 Difference]: Without dead ends: 120059 [2025-03-16 15:01:21,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:01:21,729 INFO L435 NwaCegarLoop]: 1612 mSDtfsCounter, 798 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 765 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 3256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 765 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:21,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1730 Invalid, 3256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [765 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 15:01:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120059 states. [2025-03-16 15:01:23,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120059 to 116897. [2025-03-16 15:01:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116897 states, 116896 states have (on average 1.073304475773337) internal successors, (125465), 116896 states have internal predecessors, (125465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116897 states to 116897 states and 125465 transitions. [2025-03-16 15:01:23,379 INFO L78 Accepts]: Start accepts. Automaton has 116897 states and 125465 transitions. Word has length 536 [2025-03-16 15:01:23,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:23,380 INFO L471 AbstractCegarLoop]: Abstraction has 116897 states and 125465 transitions. [2025-03-16 15:01:23,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:23,380 INFO L276 IsEmpty]: Start isEmpty. Operand 116897 states and 125465 transitions. [2025-03-16 15:01:23,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2025-03-16 15:01:23,395 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:23,395 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:23,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 15:01:23,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:01:23,596 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:23,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1969647884, now seen corresponding path program 1 times [2025-03-16 15:01:23,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:23,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174639566] [2025-03-16 15:01:23,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:23,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 547 statements into 1 equivalence classes. [2025-03-16 15:01:23,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 547 of 547 statements. [2025-03-16 15:01:23,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:23,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2025-03-16 15:01:23,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:23,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174639566] [2025-03-16 15:01:23,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174639566] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:23,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:01:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37723254] [2025-03-16 15:01:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:23,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:23,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:23,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:23,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:23,927 INFO L87 Difference]: Start difference. First operand 116897 states and 125465 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:25,789 INFO L93 Difference]: Finished difference Result 232203 states and 249079 transitions. [2025-03-16 15:01:25,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:25,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 547 [2025-03-16 15:01:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:25,915 INFO L225 Difference]: With dead ends: 232203 [2025-03-16 15:01:25,916 INFO L226 Difference]: Without dead ends: 116094 [2025-03-16 15:01:25,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:25,975 INFO L435 NwaCegarLoop]: 293 mSDtfsCounter, 1642 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:25,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 293 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-16 15:01:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116094 states. [2025-03-16 15:01:26,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116094 to 116093. [2025-03-16 15:01:26,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116093 states, 116092 states have (on average 1.0714777934741413) internal successors, (124390), 116092 states have internal predecessors, (124390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116093 states to 116093 states and 124390 transitions. [2025-03-16 15:01:27,144 INFO L78 Accepts]: Start accepts. Automaton has 116093 states and 124390 transitions. Word has length 547 [2025-03-16 15:01:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:27,145 INFO L471 AbstractCegarLoop]: Abstraction has 116093 states and 124390 transitions. [2025-03-16 15:01:27,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 116093 states and 124390 transitions. [2025-03-16 15:01:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2025-03-16 15:01:27,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:27,168 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:27,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 15:01:27,168 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:27,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash -6824929, now seen corresponding path program 1 times [2025-03-16 15:01:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:27,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347851582] [2025-03-16 15:01:27,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:27,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:27,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 564 statements into 1 equivalence classes. [2025-03-16 15:01:27,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 564 of 564 statements. [2025-03-16 15:01:27,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:27,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 582 proven. 113 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2025-03-16 15:01:28,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:28,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347851582] [2025-03-16 15:01:28,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347851582] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:01:28,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341332277] [2025-03-16 15:01:28,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:28,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:01:28,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:01:28,795 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) [2025-03-16 15:01:28,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 15:01:28,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 564 statements into 1 equivalence classes. [2025-03-16 15:01:28,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 564 of 564 statements. [2025-03-16 15:01:28,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:28,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:28,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:01:28,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:01:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 704 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-16 15:01:29,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:01:29,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341332277] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:29,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:01:29,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-16 15:01:29,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872744958] [2025-03-16 15:01:29,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:29,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:29,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:29,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:29,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-16 15:01:29,162 INFO L87 Difference]: Start difference. First operand 116093 states and 124390 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:31,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:31,720 INFO L93 Difference]: Finished difference Result 236111 states and 253590 transitions. [2025-03-16 15:01:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:31,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 564 [2025-03-16 15:01:31,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:31,838 INFO L225 Difference]: With dead ends: 236111 [2025-03-16 15:01:31,838 INFO L226 Difference]: Without dead ends: 120806 [2025-03-16 15:01:31,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-16 15:01:31,877 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1167 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:31,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 381 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-16 15:01:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120806 states. [2025-03-16 15:01:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120806 to 120806. [2025-03-16 15:01:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120806 states, 120805 states have (on average 1.0705434377716154) internal successors, (129327), 120805 states have internal predecessors, (129327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120806 states to 120806 states and 129327 transitions. [2025-03-16 15:01:32,901 INFO L78 Accepts]: Start accepts. Automaton has 120806 states and 129327 transitions. Word has length 564 [2025-03-16 15:01:32,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:32,901 INFO L471 AbstractCegarLoop]: Abstraction has 120806 states and 129327 transitions. [2025-03-16 15:01:32,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 120806 states and 129327 transitions. [2025-03-16 15:01:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2025-03-16 15:01:33,135 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:33,135 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:33,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 15:01:33,336 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,SelfDestructingSolverStorable15 [2025-03-16 15:01:33,336 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:33,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:33,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2014674025, now seen corresponding path program 1 times [2025-03-16 15:01:33,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:33,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240858132] [2025-03-16 15:01:33,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:33,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:33,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 596 statements into 1 equivalence classes. [2025-03-16 15:01:33,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 596 of 596 statements. [2025-03-16 15:01:33,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:33,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1245 backedges. 935 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2025-03-16 15:01:33,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:33,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240858132] [2025-03-16 15:01:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240858132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:33,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:33,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:01:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391421242] [2025-03-16 15:01:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:33,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:33,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:33,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:33,589 INFO L87 Difference]: Start difference. First operand 120806 states and 129327 transitions. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:36,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:36,205 INFO L93 Difference]: Finished difference Result 242388 states and 259434 transitions. [2025-03-16 15:01:36,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:36,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 596 [2025-03-16 15:01:36,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:36,348 INFO L225 Difference]: With dead ends: 242388 [2025-03-16 15:01:36,349 INFO L226 Difference]: Without dead ends: 122370 [2025-03-16 15:01:36,421 INFO L434 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 [2025-03-16 15:01:36,421 INFO L435 NwaCegarLoop]: 1360 mSDtfsCounter, 930 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:36,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1434 Invalid, 3044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-16 15:01:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122370 states. [2025-03-16 15:01:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122370 to 120786. [2025-03-16 15:01:37,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120786 states, 120785 states have (on average 1.059800471912903) internal successors, (128008), 120785 states have internal predecessors, (128008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120786 states to 120786 states and 128008 transitions. [2025-03-16 15:01:37,868 INFO L78 Accepts]: Start accepts. Automaton has 120786 states and 128008 transitions. Word has length 596 [2025-03-16 15:01:37,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:37,868 INFO L471 AbstractCegarLoop]: Abstraction has 120786 states and 128008 transitions. [2025-03-16 15:01:37,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:37,869 INFO L276 IsEmpty]: Start isEmpty. Operand 120786 states and 128008 transitions. [2025-03-16 15:01:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2025-03-16 15:01:37,883 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:37,883 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:37,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 15:01:37,883 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:37,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:37,883 INFO L85 PathProgramCache]: Analyzing trace with hash 280532304, now seen corresponding path program 1 times [2025-03-16 15:01:37,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:37,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632238278] [2025-03-16 15:01:37,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:37,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:37,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 606 statements into 1 equivalence classes. [2025-03-16 15:01:37,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 606 of 606 statements. [2025-03-16 15:01:37,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:37,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1189 backedges. 967 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2025-03-16 15:01:38,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:38,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632238278] [2025-03-16 15:01:38,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632238278] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:38,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:38,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:01:38,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520355326] [2025-03-16 15:01:38,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:38,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:38,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:38,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:38,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:38,087 INFO L87 Difference]: Start difference. First operand 120786 states and 128008 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:40,966 INFO L93 Difference]: Finished difference Result 243931 states and 258397 transitions. [2025-03-16 15:01:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:40,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 606 [2025-03-16 15:01:40,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:41,116 INFO L225 Difference]: With dead ends: 243931 [2025-03-16 15:01:41,117 INFO L226 Difference]: Without dead ends: 123933 [2025-03-16 15:01:41,170 INFO L434 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 [2025-03-16 15:01:41,171 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 882 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:41,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 644 Invalid, 3027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-16 15:01:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123933 states. [2025-03-16 15:01:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123933 to 119986. [2025-03-16 15:01:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119986 states, 119985 states have (on average 1.0481560195024378) internal successors, (125763), 119985 states have internal predecessors, (125763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119986 states to 119986 states and 125763 transitions. [2025-03-16 15:01:42,410 INFO L78 Accepts]: Start accepts. Automaton has 119986 states and 125763 transitions. Word has length 606 [2025-03-16 15:01:42,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:42,410 INFO L471 AbstractCegarLoop]: Abstraction has 119986 states and 125763 transitions. [2025-03-16 15:01:42,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:42,411 INFO L276 IsEmpty]: Start isEmpty. Operand 119986 states and 125763 transitions. [2025-03-16 15:01:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2025-03-16 15:01:42,425 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:42,425 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:42,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 15:01:42,425 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:42,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash 218396734, now seen corresponding path program 1 times [2025-03-16 15:01:42,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:42,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672369402] [2025-03-16 15:01:42,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:42,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:42,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 639 statements into 1 equivalence classes. [2025-03-16 15:01:42,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 639 of 639 statements. [2025-03-16 15:01:42,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:42,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 779 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2025-03-16 15:01:42,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:42,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672369402] [2025-03-16 15:01:42,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672369402] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:42,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:42,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:01:42,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744877472] [2025-03-16 15:01:42,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:42,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:01:42,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:42,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:01:42,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:01:42,994 INFO L87 Difference]: Start difference. First operand 119986 states and 125763 transitions. Second operand has 4 states, 4 states have (on average 110.5) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:01:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:46,202 INFO L93 Difference]: Finished difference Result 246268 states and 258085 transitions. [2025-03-16 15:01:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:01:46,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 110.5) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 639 [2025-03-16 15:01:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:46,353 INFO L225 Difference]: With dead ends: 246268 [2025-03-16 15:01:46,353 INFO L226 Difference]: Without dead ends: 125495 [2025-03-16 15:01:46,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:01:46,428 INFO L435 NwaCegarLoop]: 754 mSDtfsCounter, 1448 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 4531 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 4834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 4531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:46,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 1020 Invalid, 4834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 4531 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-16 15:01:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125495 states.