./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/Problem03_label28.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 480af262cda4397eeb9e570da47990ce157a2b110ec643ba069b0968d8ba36a6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 09:51:07,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:51:07,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 09:51:07,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:51:07,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:51:07,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:51:07,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:51:07,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:51:07,687 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:51:07,688 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:51:07,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:51:07,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:51:07,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:51:07,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:51:07,689 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:51:07,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:51:07,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:51:07,689 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:51:07,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 09:51:07,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:51:07,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:51:07,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:51:07,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:51:07,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:51:07,690 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:51:07,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:51:07,690 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:51:07,690 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:51:07,691 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:51:07,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:51:07,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:51:07,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:51:07,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:51:07,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:51:07,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:51:07,692 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:51:07,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:51:07,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 09:51:07,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 09:51:07,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:51:07,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:51:07,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:51:07,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:51:07,692 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 -> 480af262cda4397eeb9e570da47990ce157a2b110ec643ba069b0968d8ba36a6 [2025-03-03 09:51:07,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:51:07,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:51:07,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:51:07,924 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:51:07,925 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:51:07,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label28.c [2025-03-03 09:51:09,099 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dd36715a/fe934156b0544bab925eb6659c8f3d8b/FLAGab39ad52b [2025-03-03 09:51:09,437 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:51:09,438 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label28.c [2025-03-03 09:51:09,453 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dd36715a/fe934156b0544bab925eb6659c8f3d8b/FLAGab39ad52b [2025-03-03 09:51:09,470 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dd36715a/fe934156b0544bab925eb6659c8f3d8b [2025-03-03 09:51:09,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:51:09,474 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:51:09,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:51:09,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:51:09,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:51:09,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:51:09" (1/1) ... [2025-03-03 09:51:09,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f7bfe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:09, skipping insertion in model container [2025-03-03 09:51:09,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:51:09" (1/1) ... [2025-03-03 09:51:09,536 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:51:09,823 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/Problem03_label28.c[54731,54744] [2025-03-03 09:51:09,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:51:09,866 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:51:09,976 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/Problem03_label28.c[54731,54744] [2025-03-03 09:51:09,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:51:10,008 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:51:10,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10 WrapperNode [2025-03-03 09:51:10,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:51:10,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:51:10,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:51:10,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:51:10,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,135 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2025-03-03 09:51:10,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:51:10,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:51:10,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:51:10,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:51:10,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,184 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]. [2025-03-03 09:51:10,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,216 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,234 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:51:10,246 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:51:10,246 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:51:10,246 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:51:10,247 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (1/1) ... [2025-03-03 09:51:10,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:51:10,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:51:10,272 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) [2025-03-03 09:51:10,274 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 [2025-03-03 09:51:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:51:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 09:51:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:51:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:51:10,357 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:51:10,359 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:51:11,607 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2025-03-03 09:51:11,608 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:51:11,624 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:51:11,624 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:51:11,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:51:11 BoogieIcfgContainer [2025-03-03 09:51:11,625 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:51:11,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:51:11,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:51:11,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:51:11,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:51:09" (1/3) ... [2025-03-03 09:51:11,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d33097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:51:11, skipping insertion in model container [2025-03-03 09:51:11,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:51:10" (2/3) ... [2025-03-03 09:51:11,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d33097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:51:11, skipping insertion in model container [2025-03-03 09:51:11,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:51:11" (3/3) ... [2025-03-03 09:51:11,644 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem03_label28.c [2025-03-03 09:51:11,655 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:51:11,658 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label28.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 09:51:11,714 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:51:11,723 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;@6b1ab085, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:51:11,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:51:11,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.7266666666666666) internal successors, (518), 301 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-03 09:51:11,740 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:11,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:11,741 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:11,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:11,746 INFO L85 PathProgramCache]: Analyzing trace with hash -990270394, now seen corresponding path program 1 times [2025-03-03 09:51:11,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:11,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381708862] [2025-03-03 09:51:11,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:11,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:11,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-03 09:51:11,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-03 09:51:11,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:11,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:51:12,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:12,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381708862] [2025-03-03 09:51:12,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381708862] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:12,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:12,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:51:12,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094966940] [2025-03-03 09:51:12,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:12,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:12,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:12,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:12,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:51:12,543 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.7266666666666666) internal successors, (518), 301 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:13,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:13,477 INFO L93 Difference]: Finished difference Result 823 states and 1456 transitions. [2025-03-03 09:51:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:13,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2025-03-03 09:51:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:13,487 INFO L225 Difference]: With dead ends: 823 [2025-03-03 09:51:13,488 INFO L226 Difference]: Without dead ends: 444 [2025-03-03 09:51:13,492 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 [2025-03-03 09:51:13,493 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 79 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:13,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 244 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-03 09:51:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2025-03-03 09:51:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 443. [2025-03-03 09:51:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.420814479638009) internal successors, (628), 442 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 628 transitions. [2025-03-03 09:51:13,553 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 628 transitions. Word has length 152 [2025-03-03 09:51:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:13,553 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 628 transitions. [2025-03-03 09:51:13,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 628 transitions. [2025-03-03 09:51:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-03 09:51:13,556 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:13,556 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:13,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 09:51:13,558 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:13,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:13,559 INFO L85 PathProgramCache]: Analyzing trace with hash -200565348, now seen corresponding path program 1 times [2025-03-03 09:51:13,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:13,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218976600] [2025-03-03 09:51:13,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:13,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-03 09:51:13,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-03 09:51:13,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:13,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:51:13,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:13,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218976600] [2025-03-03 09:51:13,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218976600] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:13,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:13,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:51:13,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497406310] [2025-03-03 09:51:13,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:13,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:13,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:13,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:13,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:51:13,748 INFO L87 Difference]: Start difference. First operand 443 states and 628 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:14,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:14,431 INFO L93 Difference]: Finished difference Result 1310 states and 1864 transitions. [2025-03-03 09:51:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:14,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2025-03-03 09:51:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:14,434 INFO L225 Difference]: With dead ends: 1310 [2025-03-03 09:51:14,434 INFO L226 Difference]: Without dead ends: 869 [2025-03-03 09:51:14,436 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 [2025-03-03 09:51:14,438 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:14,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 91 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 09:51:14,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2025-03-03 09:51:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 855. [2025-03-03 09:51:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3875878220140516) internal successors, (1185), 854 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1185 transitions. [2025-03-03 09:51:14,474 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1185 transitions. Word has length 160 [2025-03-03 09:51:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:14,474 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1185 transitions. [2025-03-03 09:51:14,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1185 transitions. [2025-03-03 09:51:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-03 09:51:14,477 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:14,477 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:14,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 09:51:14,478 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:14,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash -424420974, now seen corresponding path program 1 times [2025-03-03 09:51:14,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:14,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933481408] [2025-03-03 09:51:14,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:14,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:14,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-03 09:51:14,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-03 09:51:14,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:14,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:51:14,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:14,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933481408] [2025-03-03 09:51:14,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933481408] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:14,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:14,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:51:14,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575711074] [2025-03-03 09:51:14,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:14,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:14,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:14,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:14,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:51:14,798 INFO L87 Difference]: Start difference. First operand 855 states and 1185 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:15,506 INFO L93 Difference]: Finished difference Result 2540 states and 3522 transitions. [2025-03-03 09:51:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:15,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2025-03-03 09:51:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:15,512 INFO L225 Difference]: With dead ends: 2540 [2025-03-03 09:51:15,512 INFO L226 Difference]: Without dead ends: 1687 [2025-03-03 09:51:15,513 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 [2025-03-03 09:51:15,513 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 286 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:15,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 98 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 09:51:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2025-03-03 09:51:15,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1685. [2025-03-03 09:51:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 1.3610451306413303) internal successors, (2292), 1684 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:15,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2292 transitions. [2025-03-03 09:51:15,537 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2292 transitions. Word has length 164 [2025-03-03 09:51:15,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:15,537 INFO L471 AbstractCegarLoop]: Abstraction has 1685 states and 2292 transitions. [2025-03-03 09:51:15,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2292 transitions. [2025-03-03 09:51:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-03 09:51:15,540 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:15,540 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:15,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 09:51:15,540 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:15,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:15,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1063202657, now seen corresponding path program 1 times [2025-03-03 09:51:15,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:15,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258650880] [2025-03-03 09:51:15,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:15,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:15,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 09:51:15,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 09:51:15,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:15,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-03 09:51:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:15,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258650880] [2025-03-03 09:51:15,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258650880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:15,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:15,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:51:15,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537819104] [2025-03-03 09:51:15,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:15,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:15,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:15,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:15,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:51:15,690 INFO L87 Difference]: Start difference. First operand 1685 states and 2292 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:16,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:16,322 INFO L93 Difference]: Finished difference Result 5012 states and 6817 transitions. [2025-03-03 09:51:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:16,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2025-03-03 09:51:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:16,332 INFO L225 Difference]: With dead ends: 5012 [2025-03-03 09:51:16,332 INFO L226 Difference]: Without dead ends: 3329 [2025-03-03 09:51:16,334 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 [2025-03-03 09:51:16,335 INFO L435 NwaCegarLoop]: 333 mSDtfsCounter, 134 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:16,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 358 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:51:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2025-03-03 09:51:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 3327. [2025-03-03 09:51:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3326 states have (on average 1.2757065544197235) internal successors, (4243), 3326 states have internal predecessors, (4243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 4243 transitions. [2025-03-03 09:51:16,387 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 4243 transitions. Word has length 167 [2025-03-03 09:51:16,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:16,388 INFO L471 AbstractCegarLoop]: Abstraction has 3327 states and 4243 transitions. [2025-03-03 09:51:16,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:16,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 4243 transitions. [2025-03-03 09:51:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-03 09:51:16,391 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:16,391 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:16,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 09:51:16,391 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:16,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:16,392 INFO L85 PathProgramCache]: Analyzing trace with hash -174429862, now seen corresponding path program 1 times [2025-03-03 09:51:16,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:16,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746124200] [2025-03-03 09:51:16,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:16,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:16,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-03 09:51:16,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-03 09:51:16,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:16,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-03 09:51:16,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:16,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746124200] [2025-03-03 09:51:16,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746124200] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:16,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:16,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:51:16,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100634457] [2025-03-03 09:51:16,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:16,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:16,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:16,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:16,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:51:16,589 INFO L87 Difference]: Start difference. First operand 3327 states and 4243 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:17,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:17,232 INFO L93 Difference]: Finished difference Result 8282 states and 10872 transitions. [2025-03-03 09:51:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:17,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2025-03-03 09:51:17,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:17,246 INFO L225 Difference]: With dead ends: 8282 [2025-03-03 09:51:17,246 INFO L226 Difference]: Without dead ends: 4957 [2025-03-03 09:51:17,249 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 [2025-03-03 09:51:17,249 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 237 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:17,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 399 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:51:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2025-03-03 09:51:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 4951. [2025-03-03 09:51:17,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4950 states have (on average 1.2325252525252526) internal successors, (6101), 4950 states have internal predecessors, (6101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 6101 transitions. [2025-03-03 09:51:17,332 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 6101 transitions. Word has length 173 [2025-03-03 09:51:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:17,333 INFO L471 AbstractCegarLoop]: Abstraction has 4951 states and 6101 transitions. [2025-03-03 09:51:17,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 6101 transitions. [2025-03-03 09:51:17,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-03 09:51:17,336 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:17,336 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:17,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 09:51:17,337 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:17,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:17,337 INFO L85 PathProgramCache]: Analyzing trace with hash -625636622, now seen corresponding path program 1 times [2025-03-03 09:51:17,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:17,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754733474] [2025-03-03 09:51:17,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:17,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:17,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-03 09:51:17,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-03 09:51:17,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:17,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-03 09:51:17,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:17,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754733474] [2025-03-03 09:51:17,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754733474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:17,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:17,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:51:17,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89346355] [2025-03-03 09:51:17,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:17,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:51:17,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:17,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:51:17,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:51:17,529 INFO L87 Difference]: Start difference. First operand 4951 states and 6101 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:18,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:18,198 INFO L93 Difference]: Finished difference Result 9871 states and 12162 transitions. [2025-03-03 09:51:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:51:18,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2025-03-03 09:51:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:18,211 INFO L225 Difference]: With dead ends: 9871 [2025-03-03 09:51:18,211 INFO L226 Difference]: Without dead ends: 4922 [2025-03-03 09:51:18,216 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 [2025-03-03 09:51:18,217 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 560 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:18,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 56 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:51:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4922 states. [2025-03-03 09:51:18,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4922 to 4922. [2025-03-03 09:51:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4922 states, 4921 states have (on average 1.1963015647226174) internal successors, (5887), 4921 states have internal predecessors, (5887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4922 states to 4922 states and 5887 transitions. [2025-03-03 09:51:18,293 INFO L78 Accepts]: Start accepts. Automaton has 4922 states and 5887 transitions. Word has length 177 [2025-03-03 09:51:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:18,293 INFO L471 AbstractCegarLoop]: Abstraction has 4922 states and 5887 transitions. [2025-03-03 09:51:18,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4922 states and 5887 transitions. [2025-03-03 09:51:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-03 09:51:18,296 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:18,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:18,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 09:51:18,297 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:18,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:18,297 INFO L85 PathProgramCache]: Analyzing trace with hash -494507353, now seen corresponding path program 1 times [2025-03-03 09:51:18,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:18,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744698910] [2025-03-03 09:51:18,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:18,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:18,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-03 09:51:18,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-03 09:51:18,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:18,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:51:18,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:18,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744698910] [2025-03-03 09:51:18,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744698910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:18,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:18,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:51:18,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037343758] [2025-03-03 09:51:18,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:18,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:18,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:18,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:18,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:51:18,453 INFO L87 Difference]: Start difference. First operand 4922 states and 5887 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:19,084 INFO L93 Difference]: Finished difference Result 12307 states and 14689 transitions. [2025-03-03 09:51:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:19,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2025-03-03 09:51:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:19,101 INFO L225 Difference]: With dead ends: 12307 [2025-03-03 09:51:19,101 INFO L226 Difference]: Without dead ends: 7387 [2025-03-03 09:51:19,107 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 [2025-03-03 09:51:19,108 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 207 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:19,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 81 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:51:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7387 states. [2025-03-03 09:51:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7387 to 7383. [2025-03-03 09:51:19,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7382 states have (on average 1.1896505012191818) internal successors, (8782), 7382 states have internal predecessors, (8782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 8782 transitions. [2025-03-03 09:51:19,222 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 8782 transitions. Word has length 180 [2025-03-03 09:51:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:19,223 INFO L471 AbstractCegarLoop]: Abstraction has 7383 states and 8782 transitions. [2025-03-03 09:51:19,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 8782 transitions. [2025-03-03 09:51:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-03 09:51:19,228 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:19,228 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:19,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 09:51:19,228 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:19,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:19,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1692637204, now seen corresponding path program 1 times [2025-03-03 09:51:19,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:19,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945173470] [2025-03-03 09:51:19,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:19,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:19,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-03 09:51:19,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-03 09:51:19,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:19,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:51:19,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:19,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945173470] [2025-03-03 09:51:19,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945173470] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:51:19,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048603692] [2025-03-03 09:51:19,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:19,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:19,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:51:19,489 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) [2025-03-03 09:51:19,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 09:51:19,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-03 09:51:19,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-03 09:51:19,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:19,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:19,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:51:19,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:51:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-03 09:51:19,756 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:51:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048603692] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:19,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:51:19,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-03 09:51:19,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745156191] [2025-03-03 09:51:19,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:19,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:19,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:19,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:19,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:19,758 INFO L87 Difference]: Start difference. First operand 7383 states and 8782 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:20,390 INFO L93 Difference]: Finished difference Result 21282 states and 25430 transitions. [2025-03-03 09:51:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:20,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2025-03-03 09:51:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:20,419 INFO L225 Difference]: With dead ends: 21282 [2025-03-03 09:51:20,419 INFO L226 Difference]: Without dead ends: 13901 [2025-03-03 09:51:20,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:20,429 INFO L435 NwaCegarLoop]: 305 mSDtfsCounter, 77 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:20,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 330 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:51:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13901 states. [2025-03-03 09:51:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13901 to 13879. [2025-03-03 09:51:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13879 states, 13878 states have (on average 1.1801412307248884) internal successors, (16378), 13878 states have internal predecessors, (16378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:20,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13879 states to 13879 states and 16378 transitions. [2025-03-03 09:51:20,592 INFO L78 Accepts]: Start accepts. Automaton has 13879 states and 16378 transitions. Word has length 187 [2025-03-03 09:51:20,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:20,593 INFO L471 AbstractCegarLoop]: Abstraction has 13879 states and 16378 transitions. [2025-03-03 09:51:20,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 13879 states and 16378 transitions. [2025-03-03 09:51:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2025-03-03 09:51:20,601 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:20,601 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:20,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 09:51:20,802 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 [2025-03-03 09:51:20,802 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:20,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:20,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1330423070, now seen corresponding path program 1 times [2025-03-03 09:51:20,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:20,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766488954] [2025-03-03 09:51:20,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:20,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 221 statements into 1 equivalence classes. [2025-03-03 09:51:20,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 221 of 221 statements. [2025-03-03 09:51:20,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:20,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 09:51:21,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:21,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766488954] [2025-03-03 09:51:21,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766488954] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:51:21,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565714534] [2025-03-03 09:51:21,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:21,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:21,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:51:21,033 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) [2025-03-03 09:51:21,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 09:51:21,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 221 statements into 1 equivalence classes. [2025-03-03 09:51:21,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 221 of 221 statements. [2025-03-03 09:51:21,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:21,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:21,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 09:51:21,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:51:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-03 09:51:21,397 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:51:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565714534] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:21,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:51:21,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-03 09:51:21,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828347762] [2025-03-03 09:51:21,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:21,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:51:21,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:21,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:51:21,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:51:21,398 INFO L87 Difference]: Start difference. First operand 13879 states and 16378 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:22,162 INFO L93 Difference]: Finished difference Result 46072 states and 54471 transitions. [2025-03-03 09:51:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:51:22,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2025-03-03 09:51:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:22,218 INFO L225 Difference]: With dead ends: 46072 [2025-03-03 09:51:22,219 INFO L226 Difference]: Without dead ends: 32195 [2025-03-03 09:51:22,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:51:22,238 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 767 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:22,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 306 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:51:22,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32195 states. [2025-03-03 09:51:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32195 to 32189. [2025-03-03 09:51:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32189 states, 32188 states have (on average 1.1688206785137318) internal successors, (37622), 32188 states have internal predecessors, (37622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32189 states to 32189 states and 37622 transitions. [2025-03-03 09:51:22,678 INFO L78 Accepts]: Start accepts. Automaton has 32189 states and 37622 transitions. Word has length 221 [2025-03-03 09:51:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:22,678 INFO L471 AbstractCegarLoop]: Abstraction has 32189 states and 37622 transitions. [2025-03-03 09:51:22,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:22,689 INFO L276 IsEmpty]: Start isEmpty. Operand 32189 states and 37622 transitions. [2025-03-03 09:51:22,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2025-03-03 09:51:22,702 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:22,702 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:22,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 09:51:22,906 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,SelfDestructingSolverStorable8 [2025-03-03 09:51:22,906 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:22,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:22,907 INFO L85 PathProgramCache]: Analyzing trace with hash -185002864, now seen corresponding path program 1 times [2025-03-03 09:51:22,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:22,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308350023] [2025-03-03 09:51:22,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:22,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:22,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 221 statements into 1 equivalence classes. [2025-03-03 09:51:22,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 221 of 221 statements. [2025-03-03 09:51:22,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:22,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:51:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308350023] [2025-03-03 09:51:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308350023] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:23,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:23,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:51:23,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670336247] [2025-03-03 09:51:23,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:23,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:23,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:23,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:23,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:51:23,078 INFO L87 Difference]: Start difference. First operand 32189 states and 37622 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:23,753 INFO L93 Difference]: Finished difference Result 80043 states and 94299 transitions. [2025-03-03 09:51:23,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:23,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2025-03-03 09:51:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:23,832 INFO L225 Difference]: With dead ends: 80043 [2025-03-03 09:51:23,832 INFO L226 Difference]: Without dead ends: 47856 [2025-03-03 09:51:23,864 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 [2025-03-03 09:51:23,865 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 231 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:23,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 344 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:51:23,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47856 states. [2025-03-03 09:51:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47856 to 47832. [2025-03-03 09:51:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47832 states, 47831 states have (on average 1.1649139679287492) internal successors, (55719), 47831 states have internal predecessors, (55719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47832 states to 47832 states and 55719 transitions. [2025-03-03 09:51:24,504 INFO L78 Accepts]: Start accepts. Automaton has 47832 states and 55719 transitions. Word has length 221 [2025-03-03 09:51:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:24,504 INFO L471 AbstractCegarLoop]: Abstraction has 47832 states and 55719 transitions. [2025-03-03 09:51:24,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand 47832 states and 55719 transitions. [2025-03-03 09:51:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2025-03-03 09:51:24,528 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:24,528 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:24,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 09:51:24,530 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:24,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:24,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2099796539, now seen corresponding path program 1 times [2025-03-03 09:51:24,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:24,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701380434] [2025-03-03 09:51:24,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:24,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:24,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 239 statements into 1 equivalence classes. [2025-03-03 09:51:24,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 239 of 239 statements. [2025-03-03 09:51:24,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:24,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-03 09:51:24,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:24,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701380434] [2025-03-03 09:51:24,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701380434] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:24,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:24,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:51:24,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406395962] [2025-03-03 09:51:24,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:24,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:24,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:24,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:51:24,768 INFO L87 Difference]: Start difference. First operand 47832 states and 55719 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:25,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:25,668 INFO L93 Difference]: Finished difference Result 127018 states and 147403 transitions. [2025-03-03 09:51:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:25,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2025-03-03 09:51:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:25,783 INFO L225 Difference]: With dead ends: 127018 [2025-03-03 09:51:25,783 INFO L226 Difference]: Without dead ends: 79188 [2025-03-03 09:51:25,803 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 [2025-03-03 09:51:25,804 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 159 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:25,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 117 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:51:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79188 states. [2025-03-03 09:51:26,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79188 to 79178. [2025-03-03 09:51:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79178 states, 79177 states have (on average 1.1569395152632709) internal successors, (91603), 79177 states have internal predecessors, (91603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79178 states to 79178 states and 91603 transitions. [2025-03-03 09:51:26,609 INFO L78 Accepts]: Start accepts. Automaton has 79178 states and 91603 transitions. Word has length 239 [2025-03-03 09:51:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:26,610 INFO L471 AbstractCegarLoop]: Abstraction has 79178 states and 91603 transitions. [2025-03-03 09:51:26,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:26,610 INFO L276 IsEmpty]: Start isEmpty. Operand 79178 states and 91603 transitions. [2025-03-03 09:51:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2025-03-03 09:51:26,632 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:26,632 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:26,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 09:51:26,633 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:26,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:26,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2057929921, now seen corresponding path program 1 times [2025-03-03 09:51:26,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:26,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613271181] [2025-03-03 09:51:26,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:26,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:26,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 240 statements into 1 equivalence classes. [2025-03-03 09:51:26,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 240 of 240 statements. [2025-03-03 09:51:26,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:26,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 86 proven. 6 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2025-03-03 09:51:26,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613271181] [2025-03-03 09:51:26,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613271181] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:51:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83976760] [2025-03-03 09:51:26,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:26,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:26,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:51:26,982 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) [2025-03-03 09:51:26,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 09:51:27,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 240 statements into 1 equivalence classes. [2025-03-03 09:51:27,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 240 of 240 statements. [2025-03-03 09:51:27,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:27,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:27,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:51:27,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:51:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-03 09:51:27,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:51:27,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83976760] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:27,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:51:27,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-03 09:51:27,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060419692] [2025-03-03 09:51:27,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:27,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:27,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:27,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:27,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:27,125 INFO L87 Difference]: Start difference. First operand 79178 states and 91603 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:28,095 INFO L93 Difference]: Finished difference Result 174626 states and 204992 transitions. [2025-03-03 09:51:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:28,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2025-03-03 09:51:28,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:28,210 INFO L225 Difference]: With dead ends: 174626 [2025-03-03 09:51:28,211 INFO L226 Difference]: Without dead ends: 95450 [2025-03-03 09:51:28,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:28,270 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 220 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:28,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 136 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:51:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95450 states. [2025-03-03 09:51:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95450 to 94403. [2025-03-03 09:51:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94403 states, 94402 states have (on average 1.1462045295650516) internal successors, (108204), 94402 states have internal predecessors, (108204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94403 states to 94403 states and 108204 transitions. [2025-03-03 09:51:29,317 INFO L78 Accepts]: Start accepts. Automaton has 94403 states and 108204 transitions. Word has length 240 [2025-03-03 09:51:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:29,317 INFO L471 AbstractCegarLoop]: Abstraction has 94403 states and 108204 transitions. [2025-03-03 09:51:29,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 94403 states and 108204 transitions. [2025-03-03 09:51:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2025-03-03 09:51:29,337 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:29,337 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:29,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 09:51:29,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:29,538 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:29,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash 953072261, now seen corresponding path program 1 times [2025-03-03 09:51:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331294378] [2025-03-03 09:51:29,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:29,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:29,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 241 statements into 1 equivalence classes. [2025-03-03 09:51:29,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 241 of 241 statements. [2025-03-03 09:51:29,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:29,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-03 09:51:29,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:29,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331294378] [2025-03-03 09:51:29,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331294378] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:51:29,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417187176] [2025-03-03 09:51:29,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:29,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:29,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:51:29,916 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) [2025-03-03 09:51:29,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 09:51:29,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 241 statements into 1 equivalence classes. [2025-03-03 09:51:30,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 241 of 241 statements. [2025-03-03 09:51:30,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:30,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:30,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:51:30,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:51:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-03 09:51:30,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:51:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417187176] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:30,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:51:30,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-03-03 09:51:30,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467165040] [2025-03-03 09:51:30,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:30,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:30,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:30,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:30,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:30,117 INFO L87 Difference]: Start difference. First operand 94403 states and 108204 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:30,967 INFO L93 Difference]: Finished difference Result 187228 states and 214622 transitions. [2025-03-03 09:51:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:30,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2025-03-03 09:51:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:31,081 INFO L225 Difference]: With dead ends: 187228 [2025-03-03 09:51:31,081 INFO L226 Difference]: Without dead ends: 92827 [2025-03-03 09:51:31,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:31,130 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 201 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:31,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 83 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 09:51:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92827 states. [2025-03-03 09:51:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92827 to 92779. [2025-03-03 09:51:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92779 states, 92778 states have (on average 1.1224104852443466) internal successors, (104135), 92778 states have internal predecessors, (104135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92779 states to 92779 states and 104135 transitions. [2025-03-03 09:51:32,290 INFO L78 Accepts]: Start accepts. Automaton has 92779 states and 104135 transitions. Word has length 241 [2025-03-03 09:51:32,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:32,290 INFO L471 AbstractCegarLoop]: Abstraction has 92779 states and 104135 transitions. [2025-03-03 09:51:32,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:32,290 INFO L276 IsEmpty]: Start isEmpty. Operand 92779 states and 104135 transitions. [2025-03-03 09:51:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2025-03-03 09:51:32,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:32,304 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:32,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 09:51:32,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:32,504 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:32,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:32,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2010818208, now seen corresponding path program 1 times [2025-03-03 09:51:32,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:32,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66927844] [2025-03-03 09:51:32,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:32,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:32,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 246 statements into 1 equivalence classes. [2025-03-03 09:51:32,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 246 of 246 statements. [2025-03-03 09:51:32,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:32,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 99 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-03 09:51:33,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66927844] [2025-03-03 09:51:33,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66927844] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:51:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749749917] [2025-03-03 09:51:33,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:33,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:33,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:51:33,472 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) [2025-03-03 09:51:33,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 09:51:33,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 246 statements into 1 equivalence classes. [2025-03-03 09:51:33,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 246 of 246 statements. [2025-03-03 09:51:33,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:33,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:33,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:51:33,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:51:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-03 09:51:33,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:51:33,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749749917] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:33,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:51:33,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-03 09:51:33,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372976052] [2025-03-03 09:51:33,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:33,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:33,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:33,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:33,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:51:33,650 INFO L87 Difference]: Start difference. First operand 92779 states and 104135 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:34,391 INFO L93 Difference]: Finished difference Result 185636 states and 208412 transitions. [2025-03-03 09:51:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:34,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2025-03-03 09:51:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:34,508 INFO L225 Difference]: With dead ends: 185636 [2025-03-03 09:51:34,508 INFO L226 Difference]: Without dead ends: 92859 [2025-03-03 09:51:34,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:51:34,575 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 154 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:34,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 159 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 09:51:34,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92859 states. [2025-03-03 09:51:35,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92859 to 92779. [2025-03-03 09:51:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92779 states, 92778 states have (on average 1.1193925284011297) internal successors, (103855), 92778 states have internal predecessors, (103855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92779 states to 92779 states and 103855 transitions. [2025-03-03 09:51:35,903 INFO L78 Accepts]: Start accepts. Automaton has 92779 states and 103855 transitions. Word has length 246 [2025-03-03 09:51:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:35,903 INFO L471 AbstractCegarLoop]: Abstraction has 92779 states and 103855 transitions. [2025-03-03 09:51:35,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 92779 states and 103855 transitions. [2025-03-03 09:51:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2025-03-03 09:51:35,918 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:35,919 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:35,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 09:51:36,119 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,SelfDestructingSolverStorable13 [2025-03-03 09:51:36,119 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:36,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1203962474, now seen corresponding path program 1 times [2025-03-03 09:51:36,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:36,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767127067] [2025-03-03 09:51:36,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:36,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:36,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 251 statements into 1 equivalence classes. [2025-03-03 09:51:36,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 251 of 251 statements. [2025-03-03 09:51:36,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:36,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 84 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-03 09:51:36,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:36,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767127067] [2025-03-03 09:51:36,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767127067] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:51:36,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38035] [2025-03-03 09:51:36,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:36,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:36,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:51:36,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:51:36,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 09:51:36,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 251 statements into 1 equivalence classes. [2025-03-03 09:51:36,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 251 of 251 statements. [2025-03-03 09:51:36,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:36,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:36,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:51:36,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:51:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 09:51:36,706 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:51:36,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38035] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:36,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:51:36,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-03 09:51:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304863211] [2025-03-03 09:51:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:36,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:36,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:36,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:36,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:36,708 INFO L87 Difference]: Start difference. First operand 92779 states and 103855 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:37,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:37,768 INFO L93 Difference]: Finished difference Result 230270 states and 257685 transitions. [2025-03-03 09:51:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:37,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2025-03-03 09:51:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:37,957 INFO L225 Difference]: With dead ends: 230270 [2025-03-03 09:51:37,957 INFO L226 Difference]: Without dead ends: 137493 [2025-03-03 09:51:38,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:38,021 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 189 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:38,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 151 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:51:38,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137493 states. [2025-03-03 09:51:39,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137493 to 137459. [2025-03-03 09:51:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137459 states, 137458 states have (on average 1.108258522603268) internal successors, (152339), 137458 states have internal predecessors, (152339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137459 states to 137459 states and 152339 transitions. [2025-03-03 09:51:39,690 INFO L78 Accepts]: Start accepts. Automaton has 137459 states and 152339 transitions. Word has length 251 [2025-03-03 09:51:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:39,691 INFO L471 AbstractCegarLoop]: Abstraction has 137459 states and 152339 transitions. [2025-03-03 09:51:39,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 137459 states and 152339 transitions. [2025-03-03 09:51:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2025-03-03 09:51:39,707 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:39,707 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:39,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 09:51:39,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-03 09:51:39,911 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:39,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1709378442, now seen corresponding path program 1 times [2025-03-03 09:51:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:39,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791157195] [2025-03-03 09:51:39,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:39,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:39,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 251 statements into 1 equivalence classes. [2025-03-03 09:51:39,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 251 of 251 statements. [2025-03-03 09:51:39,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:39,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-03 09:51:39,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:39,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791157195] [2025-03-03 09:51:39,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791157195] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:39,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:39,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:51:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363598062] [2025-03-03 09:51:39,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:39,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:39,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:39,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:39,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:51:39,998 INFO L87 Difference]: Start difference. First operand 137459 states and 152339 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:41,149 INFO L93 Difference]: Finished difference Result 265996 states and 294729 transitions. [2025-03-03 09:51:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:41,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2025-03-03 09:51:41,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:41,617 INFO L225 Difference]: With dead ends: 265996 [2025-03-03 09:51:41,617 INFO L226 Difference]: Without dead ends: 128539 [2025-03-03 09:51:41,649 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 [2025-03-03 09:51:41,650 INFO L435 NwaCegarLoop]: 293 mSDtfsCounter, 219 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:41,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 309 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:51:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128539 states. [2025-03-03 09:51:42,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128539 to 117951. [2025-03-03 09:51:43,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117951 states, 117950 states have (on average 1.0874777448071216) internal successors, (128268), 117950 states have internal predecessors, (128268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117951 states to 117951 states and 128268 transitions. [2025-03-03 09:51:43,189 INFO L78 Accepts]: Start accepts. Automaton has 117951 states and 128268 transitions. Word has length 251 [2025-03-03 09:51:43,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:43,189 INFO L471 AbstractCegarLoop]: Abstraction has 117951 states and 128268 transitions. [2025-03-03 09:51:43,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 117951 states and 128268 transitions. [2025-03-03 09:51:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2025-03-03 09:51:43,201 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:43,201 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:43,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 09:51:43,201 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:43,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:43,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1246226510, now seen corresponding path program 1 times [2025-03-03 09:51:43,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:43,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250576226] [2025-03-03 09:51:43,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:43,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:43,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 269 statements into 1 equivalence classes. [2025-03-03 09:51:43,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 269 of 269 statements. [2025-03-03 09:51:43,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:43,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:51:43,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:43,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250576226] [2025-03-03 09:51:43,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250576226] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:43,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:43,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:51:43,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044288323] [2025-03-03 09:51:43,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:43,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:43,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:43,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:43,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:51:43,519 INFO L87 Difference]: Start difference. First operand 117951 states and 128268 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:44,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:44,594 INFO L93 Difference]: Finished difference Result 238814 states and 259813 transitions. [2025-03-03 09:51:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:44,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2025-03-03 09:51:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:44,754 INFO L225 Difference]: With dead ends: 238814 [2025-03-03 09:51:44,754 INFO L226 Difference]: Without dead ends: 120865 [2025-03-03 09:51:44,805 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 [2025-03-03 09:51:44,805 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 167 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:44,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 345 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:51:44,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120865 states. [2025-03-03 09:51:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120865 to 113891. [2025-03-03 09:51:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113891 states, 113890 states have (on average 1.0868908596013698) internal successors, (123786), 113890 states have internal predecessors, (123786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113891 states to 113891 states and 123786 transitions. [2025-03-03 09:51:46,519 INFO L78 Accepts]: Start accepts. Automaton has 113891 states and 123786 transitions. Word has length 269 [2025-03-03 09:51:46,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:46,520 INFO L471 AbstractCegarLoop]: Abstraction has 113891 states and 123786 transitions. [2025-03-03 09:51:46,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 113891 states and 123786 transitions. [2025-03-03 09:51:46,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-03-03 09:51:46,554 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:46,554 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:46,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 09:51:46,554 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:46,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1231111161, now seen corresponding path program 1 times [2025-03-03 09:51:46,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:46,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195409680] [2025-03-03 09:51:46,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:46,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-03-03 09:51:46,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-03-03 09:51:46,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:46,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 153 proven. 6 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2025-03-03 09:51:46,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:46,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195409680] [2025-03-03 09:51:46,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195409680] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:51:46,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674782281] [2025-03-03 09:51:46,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:46,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:46,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:51:46,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:51:46,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 09:51:47,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-03-03 09:51:47,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-03-03 09:51:47,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:47,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:47,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:51:47,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:51:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-03-03 09:51:47,143 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:51:47,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674782281] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:47,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:51:47,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-03 09:51:47,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409986380] [2025-03-03 09:51:47,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:47,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:47,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:47,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:47,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:47,145 INFO L87 Difference]: Start difference. First operand 113891 states and 123786 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:47,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:47,938 INFO L93 Difference]: Finished difference Result 224322 states and 243158 transitions. [2025-03-03 09:51:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:47,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 386 [2025-03-03 09:51:47,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:48,072 INFO L225 Difference]: With dead ends: 224322 [2025-03-03 09:51:48,072 INFO L226 Difference]: Without dead ends: 110433 [2025-03-03 09:51:48,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:48,141 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 224 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:48,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 96 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 09:51:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110433 states. [2025-03-03 09:51:49,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110433 to 105350. [2025-03-03 09:51:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105350 states, 105349 states have (on average 1.0769917132578382) internal successors, (113460), 105349 states have internal predecessors, (113460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105350 states to 105350 states and 113460 transitions. [2025-03-03 09:51:49,831 INFO L78 Accepts]: Start accepts. Automaton has 105350 states and 113460 transitions. Word has length 386 [2025-03-03 09:51:49,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:49,832 INFO L471 AbstractCegarLoop]: Abstraction has 105350 states and 113460 transitions. [2025-03-03 09:51:49,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 105350 states and 113460 transitions. [2025-03-03 09:51:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2025-03-03 09:51:49,864 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:49,864 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-03 09:51:49,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 09:51:50,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:50,065 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:50,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:50,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1164685627, now seen corresponding path program 1 times [2025-03-03 09:51:50,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:50,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072153971] [2025-03-03 09:51:50,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:50,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:50,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 403 statements into 1 equivalence classes. [2025-03-03 09:51:50,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 403 of 403 statements. [2025-03-03 09:51:50,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:50,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2025-03-03 09:51:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:50,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072153971] [2025-03-03 09:51:50,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072153971] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:50,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:51:50,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:51:50,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151272567] [2025-03-03 09:51:50,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:50,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:51:50,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:50,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:51:50,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:51:50,547 INFO L87 Difference]: Start difference. First operand 105350 states and 113460 transitions. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:51,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:51,753 INFO L93 Difference]: Finished difference Result 214807 states and 231212 transitions. [2025-03-03 09:51:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:51:51,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2025-03-03 09:51:51,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:51,881 INFO L225 Difference]: With dead ends: 214807 [2025-03-03 09:51:51,881 INFO L226 Difference]: Without dead ends: 109459 [2025-03-03 09:51:51,918 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 [2025-03-03 09:51:51,918 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 301 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:51,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 90 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 09:51:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109459 states. [2025-03-03 09:51:53,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109459 to 104538. [2025-03-03 09:51:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104538 states, 104537 states have (on average 1.07728364119881) internal successors, (112616), 104537 states have internal predecessors, (112616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104538 states to 104538 states and 112616 transitions. [2025-03-03 09:51:53,464 INFO L78 Accepts]: Start accepts. Automaton has 104538 states and 112616 transitions. Word has length 403 [2025-03-03 09:51:53,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:53,464 INFO L471 AbstractCegarLoop]: Abstraction has 104538 states and 112616 transitions. [2025-03-03 09:51:53,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:53,465 INFO L276 IsEmpty]: Start isEmpty. Operand 104538 states and 112616 transitions. [2025-03-03 09:51:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2025-03-03 09:51:53,514 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:53,514 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-03 09:51:53,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 09:51:53,515 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:53,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:53,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1947934496, now seen corresponding path program 1 times [2025-03-03 09:51:53,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:53,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079961753] [2025-03-03 09:51:53,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:53,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:53,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 410 statements into 1 equivalence classes. [2025-03-03 09:51:53,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 410 of 410 statements. [2025-03-03 09:51:53,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:53,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 147 proven. 6 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2025-03-03 09:51:54,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:54,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079961753] [2025-03-03 09:51:54,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079961753] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:51:54,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979544139] [2025-03-03 09:51:54,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:54,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:54,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:51:54,734 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:51:54,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 09:51:54,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 410 statements into 1 equivalence classes. [2025-03-03 09:51:54,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 410 of 410 statements. [2025-03-03 09:51:54,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:54,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:54,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:51:54,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:51:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2025-03-03 09:51:55,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:51:55,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979544139] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:55,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:51:55,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-03 09:51:55,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021140662] [2025-03-03 09:51:55,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:55,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:55,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:55,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:55,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:51:55,028 INFO L87 Difference]: Start difference. First operand 104538 states and 112616 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:55,735 INFO L93 Difference]: Finished difference Result 257651 states and 277466 transitions. [2025-03-03 09:51:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:55,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 410 [2025-03-03 09:51:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:55,914 INFO L225 Difference]: With dead ends: 257651 [2025-03-03 09:51:55,914 INFO L226 Difference]: Without dead ends: 153115 [2025-03-03 09:51:55,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:51:55,986 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 191 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:55,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 431 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 09:51:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153115 states. [2025-03-03 09:51:57,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153115 to 153113. [2025-03-03 09:51:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153113 states, 153112 states have (on average 1.0764473065468416) internal successors, (164817), 153112 states have internal predecessors, (164817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153113 states to 153113 states and 164817 transitions. [2025-03-03 09:51:58,113 INFO L78 Accepts]: Start accepts. Automaton has 153113 states and 164817 transitions. Word has length 410 [2025-03-03 09:51:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:58,114 INFO L471 AbstractCegarLoop]: Abstraction has 153113 states and 164817 transitions. [2025-03-03 09:51:58,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:51:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 153113 states and 164817 transitions. [2025-03-03 09:51:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2025-03-03 09:51:58,175 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:51:58,176 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:58,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-03 09:51:58,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:58,376 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:51:58,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:51:58,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1412005846, now seen corresponding path program 1 times [2025-03-03 09:51:58,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:51:58,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751873491] [2025-03-03 09:51:58,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:58,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:51:58,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 414 statements into 1 equivalence classes. [2025-03-03 09:51:58,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 414 of 414 statements. [2025-03-03 09:51:58,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:58,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 442 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-03 09:51:59,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:51:59,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751873491] [2025-03-03 09:51:59,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751873491] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:51:59,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877311962] [2025-03-03 09:51:59,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:51:59,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:51:59,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:51:59,049 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:51:59,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 09:51:59,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 414 statements into 1 equivalence classes. [2025-03-03 09:51:59,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 414 of 414 statements. [2025-03-03 09:51:59,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:51:59,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:51:59,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:51:59,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:51:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2025-03-03 09:51:59,362 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:51:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877311962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:51:59,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:51:59,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 09:51:59,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451952877] [2025-03-03 09:51:59,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:51:59,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:51:59,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:51:59,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:51:59,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:51:59,363 INFO L87 Difference]: Start difference. First operand 153113 states and 164817 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:52:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:52:00,489 INFO L93 Difference]: Finished difference Result 435142 states and 468801 transitions. [2025-03-03 09:52:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:52:00,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 414 [2025-03-03 09:52:00,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:52:00,855 INFO L225 Difference]: With dead ends: 435142 [2025-03-03 09:52:00,855 INFO L226 Difference]: Without dead ends: 282031 [2025-03-03 09:52:00,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:52:00,964 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 197 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 09:52:00,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 527 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 09:52:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282031 states.