./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 3a10e323530dd468ac9890be0bde9c03597b2532bfc479ced0ba7cd3c96166ef --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 22:44:34,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 22:44:34,497 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-16 22:44:34,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 22:44:34,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 22:44:34,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 22:44:34,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 22:44:34,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 22:44:34,527 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 22:44:34,528 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 22:44:34,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 22:44:34,528 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 22:44:34,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 22:44:34,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 22:44:34,529 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 22:44:34,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 22:44:34,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 22:44:34,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 22:44:34,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 22:44:34,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 22:44:34,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 22:44:34,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 22:44:34,530 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 22:44:34,530 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 22:44:34,530 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 22:44:34,530 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 22:44:34,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 22:44:34,530 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 22:44:34,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 22:44:34,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:44:34,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 22:44:34,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 22:44:34,531 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 22:44:34,531 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 22:44:34,531 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 22:44:34,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 22:44:34,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 22:44:34,531 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 22:44:34,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 22:44:34,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 22:44:34,532 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a10e323530dd468ac9890be0bde9c03597b2532bfc479ced0ba7cd3c96166ef [2025-03-16 22:44:34,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 22:44:34,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 22:44:34,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 22:44:34,756 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 22:44:34,756 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 22:44:34,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2025-03-16 22:44:35,952 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad35df3ad/ead1fdab97c14c1dae293ccfe5814d16/FLAG4a66b38c9 [2025-03-16 22:44:36,198 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 22:44:36,199 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2025-03-16 22:44:36,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad35df3ad/ead1fdab97c14c1dae293ccfe5814d16/FLAG4a66b38c9 [2025-03-16 22:44:36,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad35df3ad/ead1fdab97c14c1dae293ccfe5814d16 [2025-03-16 22:44:36,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 22:44:36,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 22:44:36,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 22:44:36,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 22:44:36,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 22:44:36,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:36,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7666d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36, skipping insertion in model container [2025-03-16 22:44:36,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:36,544 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 22:44:36,658 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c[1266,1279] [2025-03-16 22:44:36,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:44:36,781 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 22:44:36,790 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/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c[1266,1279] [2025-03-16 22:44:36,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:44:36,883 INFO L204 MainTranslator]: Completed translation [2025-03-16 22:44:36,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36 WrapperNode [2025-03-16 22:44:36,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 22:44:36,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 22:44:36,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 22:44:36,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 22:44:36,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:36,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:36,995 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 747 [2025-03-16 22:44:36,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 22:44:36,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 22:44:36,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 22:44:36,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 22:44:37,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:37,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:37,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:37,054 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 22:44:37,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:37,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:37,084 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:37,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:37,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:37,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:37,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 22:44:37,127 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 22:44:37,127 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 22:44:37,127 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 22:44:37,128 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (1/1) ... [2025-03-16 22:44:37,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:44:37,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:44:37,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 22:44:37,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 22:44:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 22:44:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 22:44:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 22:44:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 22:44:37,292 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 22:44:37,294 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 22:44:37,954 INFO L? ?]: Removed 393 outVars from TransFormulas that were not future-live. [2025-03-16 22:44:37,954 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 22:44:37,990 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 22:44:37,992 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 22:44:37,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:44:37 BoogieIcfgContainer [2025-03-16 22:44:37,993 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 22:44:37,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 22:44:37,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 22:44:37,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 22:44:37,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 10:44:36" (1/3) ... [2025-03-16 22:44:37,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8f882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:44:37, skipping insertion in model container [2025-03-16 22:44:37,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:44:36" (2/3) ... [2025-03-16 22:44:37,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8f882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:44:37, skipping insertion in model container [2025-03-16 22:44:37,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:44:37" (3/3) ... [2025-03-16 22:44:38,000 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2025-03-16 22:44:38,042 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 22:44:38,043 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c that has 1 procedures, 140 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 22:44:38,078 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 22:44:38,085 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;@6f97ee23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 22:44:38,085 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 22:44:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 138 states have (on average 1.5) internal successors, (207), 139 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:38,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-03-16 22:44:38,094 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:38,094 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] [2025-03-16 22:44:38,095 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:38,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1168482644, now seen corresponding path program 1 times [2025-03-16 22:44:38,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:38,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515280727] [2025-03-16 22:44:38,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:38,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:38,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-16 22:44:38,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-16 22:44:38,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:38,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:38,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:38,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515280727] [2025-03-16 22:44:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515280727] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:38,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:38,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:44:38,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780018444] [2025-03-16 22:44:38,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:38,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 22:44:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:38,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 22:44:38,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:44:38,641 INFO L87 Difference]: Start difference. First operand has 140 states, 138 states have (on average 1.5) internal successors, (207), 139 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:38,732 INFO L93 Difference]: Finished difference Result 227 states and 337 transitions. [2025-03-16 22:44:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:44:38,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2025-03-16 22:44:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:38,739 INFO L225 Difference]: With dead ends: 227 [2025-03-16 22:44:38,739 INFO L226 Difference]: Without dead ends: 140 [2025-03-16 22:44:38,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:44:38,743 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:38,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:44:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-03-16 22:44:38,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2025-03-16 22:44:38,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.4820143884892085) internal successors, (206), 139 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 206 transitions. [2025-03-16 22:44:38,775 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 206 transitions. Word has length 40 [2025-03-16 22:44:38,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:38,775 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 206 transitions. [2025-03-16 22:44:38,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 206 transitions. [2025-03-16 22:44:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-16 22:44:38,778 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:38,778 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] [2025-03-16 22:44:38,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 22:44:38,778 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:38,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:38,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1858544348, now seen corresponding path program 1 times [2025-03-16 22:44:38,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:38,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661282884] [2025-03-16 22:44:38,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:38,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:38,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-16 22:44:38,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-16 22:44:38,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:38,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:38,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:38,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661282884] [2025-03-16 22:44:38,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661282884] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:38,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:38,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:44:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570960367] [2025-03-16 22:44:38,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:38,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 22:44:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:38,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 22:44:38,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:44:38,967 INFO L87 Difference]: Start difference. First operand 140 states and 206 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:39,063 INFO L93 Difference]: Finished difference Result 229 states and 336 transitions. [2025-03-16 22:44:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:44:39,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2025-03-16 22:44:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:39,064 INFO L225 Difference]: With dead ends: 229 [2025-03-16 22:44:39,064 INFO L226 Difference]: Without dead ends: 142 [2025-03-16 22:44:39,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:44:39,065 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:39,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 499 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:44:39,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-03-16 22:44:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2025-03-16 22:44:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.475177304964539) internal successors, (208), 141 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 208 transitions. [2025-03-16 22:44:39,079 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 208 transitions. Word has length 41 [2025-03-16 22:44:39,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:39,079 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 208 transitions. [2025-03-16 22:44:39,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 208 transitions. [2025-03-16 22:44:39,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-16 22:44:39,091 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:39,092 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] [2025-03-16 22:44:39,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 22:44:39,092 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:39,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:39,092 INFO L85 PathProgramCache]: Analyzing trace with hash 151209383, now seen corresponding path program 1 times [2025-03-16 22:44:39,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:39,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965581702] [2025-03-16 22:44:39,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:39,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:39,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-16 22:44:39,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-16 22:44:39,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:39,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:39,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:39,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965581702] [2025-03-16 22:44:39,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965581702] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:39,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:39,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:44:39,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643261173] [2025-03-16 22:44:39,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:39,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 22:44:39,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:39,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 22:44:39,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:44:39,404 INFO L87 Difference]: Start difference. First operand 142 states and 208 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:39,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:39,485 INFO L93 Difference]: Finished difference Result 231 states and 337 transitions. [2025-03-16 22:44:39,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:44:39,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2025-03-16 22:44:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:39,486 INFO L225 Difference]: With dead ends: 231 [2025-03-16 22:44:39,486 INFO L226 Difference]: Without dead ends: 142 [2025-03-16 22:44:39,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:44:39,487 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 6 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:39,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 489 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:44:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-03-16 22:44:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2025-03-16 22:44:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.4680851063829787) internal successors, (207), 141 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 207 transitions. [2025-03-16 22:44:39,492 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 207 transitions. Word has length 42 [2025-03-16 22:44:39,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:39,492 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 207 transitions. [2025-03-16 22:44:39,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:39,492 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 207 transitions. [2025-03-16 22:44:39,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-16 22:44:39,493 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:39,493 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] [2025-03-16 22:44:39,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 22:44:39,493 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:39,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:39,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2014081111, now seen corresponding path program 1 times [2025-03-16 22:44:39,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:39,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216860095] [2025-03-16 22:44:39,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:39,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:39,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-16 22:44:39,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-16 22:44:39,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:39,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:39,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:39,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216860095] [2025-03-16 22:44:39,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216860095] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:39,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:39,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 22:44:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156086022] [2025-03-16 22:44:39,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:39,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 22:44:39,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:39,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 22:44:39,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-16 22:44:39,890 INFO L87 Difference]: Start difference. First operand 142 states and 207 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:40,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:40,081 INFO L93 Difference]: Finished difference Result 241 states and 349 transitions. [2025-03-16 22:44:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 22:44:40,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-03-16 22:44:40,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:40,082 INFO L225 Difference]: With dead ends: 241 [2025-03-16 22:44:40,082 INFO L226 Difference]: Without dead ends: 152 [2025-03-16 22:44:40,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-03-16 22:44:40,083 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 192 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:40,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 965 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:44:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-03-16 22:44:40,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2025-03-16 22:44:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.46) internal successors, (219), 150 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2025-03-16 22:44:40,094 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 43 [2025-03-16 22:44:40,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:40,094 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2025-03-16 22:44:40,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:40,094 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2025-03-16 22:44:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-16 22:44:40,095 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:40,095 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] [2025-03-16 22:44:40,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 22:44:40,095 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:40,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1356897635, now seen corresponding path program 1 times [2025-03-16 22:44:40,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:40,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565076736] [2025-03-16 22:44:40,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:40,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:40,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-16 22:44:40,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-16 22:44:40,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:40,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:40,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:40,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:40,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565076736] [2025-03-16 22:44:40,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565076736] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:40,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:40,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 22:44:40,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863486129] [2025-03-16 22:44:40,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:40,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 22:44:40,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:40,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 22:44:40,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 22:44:40,391 INFO L87 Difference]: Start difference. First operand 151 states and 219 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:40,836 INFO L93 Difference]: Finished difference Result 287 states and 409 transitions. [2025-03-16 22:44:40,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 22:44:40,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-03-16 22:44:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:40,837 INFO L225 Difference]: With dead ends: 287 [2025-03-16 22:44:40,837 INFO L226 Difference]: Without dead ends: 189 [2025-03-16 22:44:40,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-16 22:44:40,839 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 269 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:40,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 152 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 22:44:40,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-03-16 22:44:40,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 154. [2025-03-16 22:44:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.457516339869281) internal successors, (223), 153 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 223 transitions. [2025-03-16 22:44:40,845 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 223 transitions. Word has length 44 [2025-03-16 22:44:40,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:40,845 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 223 transitions. [2025-03-16 22:44:40,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:40,846 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 223 transitions. [2025-03-16 22:44:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-16 22:44:40,846 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:40,847 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] [2025-03-16 22:44:40,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 22:44:40,847 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:40,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:40,847 INFO L85 PathProgramCache]: Analyzing trace with hash 843665590, now seen corresponding path program 1 times [2025-03-16 22:44:40,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:40,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781105912] [2025-03-16 22:44:40,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:40,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:40,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-16 22:44:40,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-16 22:44:40,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:40,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:41,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:41,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781105912] [2025-03-16 22:44:41,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781105912] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:41,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:41,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:44:41,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852151222] [2025-03-16 22:44:41,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:41,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 22:44:41,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:41,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 22:44:41,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 22:44:41,071 INFO L87 Difference]: Start difference. First operand 154 states and 223 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:41,170 INFO L93 Difference]: Finished difference Result 258 states and 371 transitions. [2025-03-16 22:44:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 22:44:41,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-03-16 22:44:41,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:41,172 INFO L225 Difference]: With dead ends: 258 [2025-03-16 22:44:41,172 INFO L226 Difference]: Without dead ends: 160 [2025-03-16 22:44:41,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-16 22:44:41,173 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 175 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:41,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 489 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:44:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2025-03-16 22:44:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2025-03-16 22:44:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.440251572327044) internal successors, (229), 159 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 229 transitions. [2025-03-16 22:44:41,178 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 229 transitions. Word has length 44 [2025-03-16 22:44:41,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:41,179 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 229 transitions. [2025-03-16 22:44:41,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:41,179 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 229 transitions. [2025-03-16 22:44:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-16 22:44:41,180 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:41,180 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] [2025-03-16 22:44:41,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 22:44:41,180 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:41,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2008451153, now seen corresponding path program 1 times [2025-03-16 22:44:41,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:41,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975157450] [2025-03-16 22:44:41,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:41,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:41,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-16 22:44:41,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-16 22:44:41,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:41,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:41,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975157450] [2025-03-16 22:44:41,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975157450] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:41,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:41,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:44:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695404846] [2025-03-16 22:44:41,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:41,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 22:44:41,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:41,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 22:44:41,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 22:44:41,319 INFO L87 Difference]: Start difference. First operand 160 states and 229 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:41,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:41,430 INFO L93 Difference]: Finished difference Result 294 states and 412 transitions. [2025-03-16 22:44:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 22:44:41,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-03-16 22:44:41,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:41,431 INFO L225 Difference]: With dead ends: 294 [2025-03-16 22:44:41,431 INFO L226 Difference]: Without dead ends: 189 [2025-03-16 22:44:41,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 22:44:41,432 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 236 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:41,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 471 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:44:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-03-16 22:44:41,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2025-03-16 22:44:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.4367088607594938) internal successors, (227), 158 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 227 transitions. [2025-03-16 22:44:41,436 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 227 transitions. Word has length 45 [2025-03-16 22:44:41,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:41,437 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 227 transitions. [2025-03-16 22:44:41,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:41,437 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 227 transitions. [2025-03-16 22:44:41,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-16 22:44:41,437 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:41,438 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] [2025-03-16 22:44:41,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 22:44:41,438 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:41,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash 572860893, now seen corresponding path program 1 times [2025-03-16 22:44:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:41,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282171546] [2025-03-16 22:44:41,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:41,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:41,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-16 22:44:41,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-16 22:44:41,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:41,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:41,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:41,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282171546] [2025-03-16 22:44:41,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282171546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:41,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:41,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 22:44:41,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739860190] [2025-03-16 22:44:41,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:41,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 22:44:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:41,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 22:44:41,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 22:44:41,665 INFO L87 Difference]: Start difference. First operand 159 states and 227 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:42,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:42,143 INFO L93 Difference]: Finished difference Result 305 states and 428 transitions. [2025-03-16 22:44:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 22:44:42,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-03-16 22:44:42,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:42,145 INFO L225 Difference]: With dead ends: 305 [2025-03-16 22:44:42,145 INFO L226 Difference]: Without dead ends: 201 [2025-03-16 22:44:42,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-16 22:44:42,146 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 294 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:42,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 206 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 22:44:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-16 22:44:42,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2025-03-16 22:44:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.434782608695652) internal successors, (231), 161 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) [2025-03-16 22:44:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 231 transitions. [2025-03-16 22:44:42,152 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 231 transitions. Word has length 45 [2025-03-16 22:44:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:42,152 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 231 transitions. [2025-03-16 22:44:42,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:42,152 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 231 transitions. [2025-03-16 22:44:42,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-16 22:44:42,153 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:42,153 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] [2025-03-16 22:44:42,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 22:44:42,154 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:42,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:42,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1893142, now seen corresponding path program 1 times [2025-03-16 22:44:42,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:42,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681431344] [2025-03-16 22:44:42,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:42,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:42,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-16 22:44:42,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-16 22:44:42,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:42,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:42,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:42,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681431344] [2025-03-16 22:44:42,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681431344] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:42,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:42,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:44:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095573259] [2025-03-16 22:44:42,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:42,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 22:44:42,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:42,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 22:44:42,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 22:44:42,275 INFO L87 Difference]: Start difference. First operand 162 states and 231 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:42,380 INFO L93 Difference]: Finished difference Result 288 states and 405 transitions. [2025-03-16 22:44:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 22:44:42,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2025-03-16 22:44:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:42,382 INFO L225 Difference]: With dead ends: 288 [2025-03-16 22:44:42,382 INFO L226 Difference]: Without dead ends: 183 [2025-03-16 22:44:42,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 22:44:42,383 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 238 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:42,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 474 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:44:42,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-16 22:44:42,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2025-03-16 22:44:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.43125) internal successors, (229), 160 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 229 transitions. [2025-03-16 22:44:42,390 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 229 transitions. Word has length 46 [2025-03-16 22:44:42,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:42,390 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 229 transitions. [2025-03-16 22:44:42,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 229 transitions. [2025-03-16 22:44:42,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 22:44:42,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:42,392 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 22:44:42,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 22:44:42,392 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:42,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash 899733313, now seen corresponding path program 1 times [2025-03-16 22:44:42,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:42,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649868816] [2025-03-16 22:44:42,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:42,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:42,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 22:44:42,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 22:44:42,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:42,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:43,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:43,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649868816] [2025-03-16 22:44:43,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649868816] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:44:43,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757838027] [2025-03-16 22:44:43,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:43,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:44:43,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:44:43,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:44:43,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 22:44:43,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 22:44:43,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 22:44:43,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:43,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:43,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-16 22:44:43,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:44:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:44,254 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:44:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:44,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757838027] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:44:44,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 22:44:44,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 24 [2025-03-16 22:44:44,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073291263] [2025-03-16 22:44:44,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 22:44:44,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-16 22:44:44,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:44,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-16 22:44:44,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2025-03-16 22:44:44,641 INFO L87 Difference]: Start difference. First operand 161 states and 229 transitions. Second operand has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:45,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:45,856 INFO L93 Difference]: Finished difference Result 443 states and 624 transitions. [2025-03-16 22:44:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 22:44:45,856 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 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 88 [2025-03-16 22:44:45,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:45,859 INFO L225 Difference]: With dead ends: 443 [2025-03-16 22:44:45,859 INFO L226 Difference]: Without dead ends: 339 [2025-03-16 22:44:45,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1059, Unknown=0, NotChecked=0, Total=1260 [2025-03-16 22:44:45,860 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 957 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:45,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 562 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-16 22:44:45,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2025-03-16 22:44:45,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 267. [2025-03-16 22:44:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.4511278195488722) internal successors, (386), 266 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 386 transitions. [2025-03-16 22:44:45,870 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 386 transitions. Word has length 88 [2025-03-16 22:44:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:45,871 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 386 transitions. [2025-03-16 22:44:45,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 386 transitions. [2025-03-16 22:44:45,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-16 22:44:45,891 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:45,891 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 22:44:45,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 22:44:46,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 22:44:46,095 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:46,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:46,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1050433491, now seen corresponding path program 1 times [2025-03-16 22:44:46,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:46,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396011546] [2025-03-16 22:44:46,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:46,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:46,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-16 22:44:46,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-16 22:44:46,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:46,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:46,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:46,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396011546] [2025-03-16 22:44:46,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396011546] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:44:46,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336038538] [2025-03-16 22:44:46,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:46,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:44:46,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:44:46,857 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:44:46,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 22:44:47,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-16 22:44:47,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-16 22:44:47,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:47,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:47,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-16 22:44:47,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:44:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:47,424 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 22:44:47,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336038538] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:47,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 22:44:47,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-16 22:44:47,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356080276] [2025-03-16 22:44:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:47,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 22:44:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:47,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 22:44:47,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 22:44:47,425 INFO L87 Difference]: Start difference. First operand 267 states and 386 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:47,737 INFO L93 Difference]: Finished difference Result 490 states and 704 transitions. [2025-03-16 22:44:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 22:44:47,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2025-03-16 22:44:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:47,739 INFO L225 Difference]: With dead ends: 490 [2025-03-16 22:44:47,739 INFO L226 Difference]: Without dead ends: 280 [2025-03-16 22:44:47,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-16 22:44:47,739 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 196 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:47,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 140 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 22:44:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2025-03-16 22:44:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2025-03-16 22:44:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.4316546762589928) internal successors, (398), 278 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 398 transitions. [2025-03-16 22:44:47,749 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 398 transitions. Word has length 89 [2025-03-16 22:44:47,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:47,750 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 398 transitions. [2025-03-16 22:44:47,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:47,750 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 398 transitions. [2025-03-16 22:44:47,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 22:44:47,751 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:47,751 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 22:44:47,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 22:44:47,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-16 22:44:47,951 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:47,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2112465702, now seen corresponding path program 1 times [2025-03-16 22:44:47,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:47,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569599164] [2025-03-16 22:44:47,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:47,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 22:44:48,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 22:44:48,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:48,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:48,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:48,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569599164] [2025-03-16 22:44:48,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569599164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:48,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:48,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 22:44:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505594036] [2025-03-16 22:44:48,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:48,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 22:44:48,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:48,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 22:44:48,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-16 22:44:48,665 INFO L87 Difference]: Start difference. First operand 279 states and 398 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:48,907 INFO L93 Difference]: Finished difference Result 588 states and 848 transitions. [2025-03-16 22:44:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 22:44:48,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2025-03-16 22:44:48,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:48,909 INFO L225 Difference]: With dead ends: 588 [2025-03-16 22:44:48,909 INFO L226 Difference]: Without dead ends: 378 [2025-03-16 22:44:48,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-16 22:44:48,910 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 278 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:48,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 335 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 22:44:48,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2025-03-16 22:44:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 297. [2025-03-16 22:44:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.4256756756756757) internal successors, (422), 296 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 422 transitions. [2025-03-16 22:44:48,922 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 422 transitions. Word has length 91 [2025-03-16 22:44:48,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:48,922 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 422 transitions. [2025-03-16 22:44:48,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 422 transitions. [2025-03-16 22:44:48,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 22:44:48,923 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:48,923 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 22:44:48,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 22:44:48,923 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:48,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:48,923 INFO L85 PathProgramCache]: Analyzing trace with hash -715714441, now seen corresponding path program 1 times [2025-03-16 22:44:48,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:48,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672930022] [2025-03-16 22:44:48,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:48,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:48,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 22:44:49,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 22:44:49,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:49,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:49,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:49,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672930022] [2025-03-16 22:44:49,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672930022] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:49,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:49,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 22:44:49,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667238181] [2025-03-16 22:44:49,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:49,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 22:44:49,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:49,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 22:44:49,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 22:44:49,591 INFO L87 Difference]: Start difference. First operand 297 states and 422 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:49,939 INFO L93 Difference]: Finished difference Result 636 states and 917 transitions. [2025-03-16 22:44:49,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 22:44:49,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2025-03-16 22:44:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:49,941 INFO L225 Difference]: With dead ends: 636 [2025-03-16 22:44:49,941 INFO L226 Difference]: Without dead ends: 426 [2025-03-16 22:44:49,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-16 22:44:49,942 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 335 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:49,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 365 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 22:44:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2025-03-16 22:44:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 357. [2025-03-16 22:44:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.4297752808988764) internal successors, (509), 356 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 509 transitions. [2025-03-16 22:44:49,955 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 509 transitions. Word has length 92 [2025-03-16 22:44:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:49,955 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 509 transitions. [2025-03-16 22:44:49,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 509 transitions. [2025-03-16 22:44:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-16 22:44:49,956 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:49,956 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 22:44:49,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 22:44:49,956 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:49,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:49,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1572636147, now seen corresponding path program 1 times [2025-03-16 22:44:49,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:49,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012867215] [2025-03-16 22:44:49,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:49,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:49,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-16 22:44:50,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-16 22:44:50,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:50,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:50,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:50,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012867215] [2025-03-16 22:44:50,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012867215] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:50,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:44:50,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 22:44:50,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839795673] [2025-03-16 22:44:50,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:50,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 22:44:50,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:50,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 22:44:50,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 22:44:50,929 INFO L87 Difference]: Start difference. First operand 357 states and 509 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:51,389 INFO L93 Difference]: Finished difference Result 568 states and 813 transitions. [2025-03-16 22:44:51,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 22:44:51,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-03-16 22:44:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:51,391 INFO L225 Difference]: With dead ends: 568 [2025-03-16 22:44:51,391 INFO L226 Difference]: Without dead ends: 336 [2025-03-16 22:44:51,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-03-16 22:44:51,391 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 193 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:51,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 625 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 22:44:51,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2025-03-16 22:44:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 335. [2025-03-16 22:44:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.4281437125748504) internal successors, (477), 334 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:51,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 477 transitions. [2025-03-16 22:44:51,398 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 477 transitions. Word has length 93 [2025-03-16 22:44:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:51,398 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 477 transitions. [2025-03-16 22:44:51,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 477 transitions. [2025-03-16 22:44:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-16 22:44:51,399 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:51,399 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 22:44:51,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 22:44:51,399 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:51,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:51,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1754714721, now seen corresponding path program 1 times [2025-03-16 22:44:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:51,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413480981] [2025-03-16 22:44:51,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:51,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:51,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-16 22:44:51,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-16 22:44:51,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:51,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:52,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:52,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413480981] [2025-03-16 22:44:52,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413480981] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:44:52,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341355419] [2025-03-16 22:44:52,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:52,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:44:52,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:44:52,560 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:44:52,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 22:44:52,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-16 22:44:52,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-16 22:44:52,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:52,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:52,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-16 22:44:52,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:44:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:53,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:44:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:53,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341355419] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:44:53,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 22:44:53,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2025-03-16 22:44:53,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559591552] [2025-03-16 22:44:53,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 22:44:53,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-16 22:44:53,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:53,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-16 22:44:53,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2025-03-16 22:44:53,736 INFO L87 Difference]: Start difference. First operand 335 states and 477 transitions. Second operand has 22 states, 22 states have (on average 11.545454545454545) internal successors, (254), 21 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:54,630 INFO L93 Difference]: Finished difference Result 633 states and 903 transitions. [2025-03-16 22:44:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 22:44:54,631 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.545454545454545) internal successors, (254), 21 states have internal predecessors, (254), 0 states have call successors, (0), 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 94 [2025-03-16 22:44:54,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:54,632 INFO L225 Difference]: With dead ends: 633 [2025-03-16 22:44:54,632 INFO L226 Difference]: Without dead ends: 423 [2025-03-16 22:44:54,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2025-03-16 22:44:54,633 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 755 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:54,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 553 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-16 22:44:54,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2025-03-16 22:44:54,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 341. [2025-03-16 22:44:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.4294117647058824) internal successors, (486), 340 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 486 transitions. [2025-03-16 22:44:54,643 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 486 transitions. Word has length 94 [2025-03-16 22:44:54,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:54,643 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 486 transitions. [2025-03-16 22:44:54,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.545454545454545) internal successors, (254), 21 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 486 transitions. [2025-03-16 22:44:54,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-16 22:44:54,647 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:54,647 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:44:54,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 22:44:54,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:44:54,848 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:54,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash 341943375, now seen corresponding path program 1 times [2025-03-16 22:44:54,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:54,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595583572] [2025-03-16 22:44:54,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:54,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:54,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-16 22:44:54,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-16 22:44:54,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:54,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:55,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:55,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595583572] [2025-03-16 22:44:55,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595583572] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:44:55,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274101984] [2025-03-16 22:44:55,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:55,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:44:55,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:44:55,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:44:55,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 22:44:55,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-16 22:44:55,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-16 22:44:55,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:55,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:55,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-16 22:44:55,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:44:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:56,219 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 22:44:56,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274101984] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:44:56,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 22:44:56,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2025-03-16 22:44:56,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022934676] [2025-03-16 22:44:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:44:56,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 22:44:56,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:44:56,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 22:44:56,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-16 22:44:56,221 INFO L87 Difference]: Start difference. First operand 341 states and 486 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:44:56,920 INFO L93 Difference]: Finished difference Result 634 states and 902 transitions. [2025-03-16 22:44:56,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 22:44:56,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-03-16 22:44:56,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:44:56,922 INFO L225 Difference]: With dead ends: 634 [2025-03-16 22:44:56,922 INFO L226 Difference]: Without dead ends: 373 [2025-03-16 22:44:56,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-16 22:44:56,923 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 290 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 22:44:56,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 390 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 22:44:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2025-03-16 22:44:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 291. [2025-03-16 22:44:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.4172413793103449) internal successors, (411), 290 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 411 transitions. [2025-03-16 22:44:56,930 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 411 transitions. Word has length 94 [2025-03-16 22:44:56,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:44:56,930 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 411 transitions. [2025-03-16 22:44:56,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:44:56,930 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 411 transitions. [2025-03-16 22:44:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-16 22:44:56,931 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:44:56,931 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:44:56,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 22:44:57,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 22:44:57,132 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:44:57,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:44:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1751403879, now seen corresponding path program 1 times [2025-03-16 22:44:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:44:57,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273905061] [2025-03-16 22:44:57,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:57,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:44:57,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-16 22:44:57,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-16 22:44:57,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:57,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:44:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273905061] [2025-03-16 22:44:58,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273905061] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:44:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24531918] [2025-03-16 22:44:58,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:44:58,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:44:58,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:44:58,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:44:58,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 22:44:58,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-16 22:44:58,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-16 22:44:58,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:44:58,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:44:58,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 99 conjuncts are in the unsatisfiable core [2025-03-16 22:44:58,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:44:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:44:59,000 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:45:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:00,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24531918] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:45:00,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 22:45:00,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 15] total 33 [2025-03-16 22:45:00,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475420186] [2025-03-16 22:45:00,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 22:45:00,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-16 22:45:00,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:00,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-16 22:45:00,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2025-03-16 22:45:00,117 INFO L87 Difference]: Start difference. First operand 291 states and 411 transitions. Second operand has 34 states, 34 states have (on average 8.117647058823529) internal successors, (276), 33 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:45:01,901 INFO L93 Difference]: Finished difference Result 493 states and 697 transitions. [2025-03-16 22:45:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-16 22:45:01,902 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.117647058823529) internal successors, (276), 33 states have internal predecessors, (276), 0 states have call successors, (0), 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 95 [2025-03-16 22:45:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:45:01,903 INFO L225 Difference]: With dead ends: 493 [2025-03-16 22:45:01,903 INFO L226 Difference]: Without dead ends: 334 [2025-03-16 22:45:01,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=689, Invalid=4003, Unknown=0, NotChecked=0, Total=4692 [2025-03-16 22:45:01,905 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 922 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:45:01,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 675 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-16 22:45:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2025-03-16 22:45:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 307. [2025-03-16 22:45:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.408496732026144) internal successors, (431), 306 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 431 transitions. [2025-03-16 22:45:01,911 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 431 transitions. Word has length 95 [2025-03-16 22:45:01,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:45:01,911 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 431 transitions. [2025-03-16 22:45:01,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.117647058823529) internal successors, (276), 33 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 431 transitions. [2025-03-16 22:45:01,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-16 22:45:01,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:45:01,912 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:45:01,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 22:45:02,113 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,SelfDestructingSolverStorable16 [2025-03-16 22:45:02,113 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:45:02,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:45:02,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1396508393, now seen corresponding path program 1 times [2025-03-16 22:45:02,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:45:02,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153709317] [2025-03-16 22:45:02,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:02,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:45:02,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-16 22:45:02,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-16 22:45:02,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:02,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:03,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:45:03,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153709317] [2025-03-16 22:45:03,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153709317] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:45:03,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611280767] [2025-03-16 22:45:03,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:03,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:45:03,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:45:03,321 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) [2025-03-16 22:45:03,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 22:45:03,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-16 22:45:03,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-16 22:45:03,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:03,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:03,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-03-16 22:45:03,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:45:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 55 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:04,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:45:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 61 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:05,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611280767] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:45:05,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 22:45:05,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 12] total 28 [2025-03-16 22:45:05,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530207709] [2025-03-16 22:45:05,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 22:45:05,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-16 22:45:05,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:05,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-16 22:45:05,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2025-03-16 22:45:05,242 INFO L87 Difference]: Start difference. First operand 307 states and 431 transitions. Second operand has 29 states, 29 states have (on average 13.206896551724139) internal successors, (383), 28 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:45:08,994 INFO L93 Difference]: Finished difference Result 2187 states and 3085 transitions. [2025-03-16 22:45:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2025-03-16 22:45:08,994 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 13.206896551724139) internal successors, (383), 28 states have internal predecessors, (383), 0 states have call successors, (0), 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 139 [2025-03-16 22:45:08,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:45:09,001 INFO L225 Difference]: With dead ends: 2187 [2025-03-16 22:45:09,001 INFO L226 Difference]: Without dead ends: 2014 [2025-03-16 22:45:09,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5544 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1918, Invalid=15112, Unknown=0, NotChecked=0, Total=17030 [2025-03-16 22:45:09,005 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 1503 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 5710 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 5732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:45:09,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1796 Invalid, 5732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 5710 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-16 22:45:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2025-03-16 22:45:09,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 791. [2025-03-16 22:45:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.3949367088607596) internal successors, (1102), 790 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1102 transitions. [2025-03-16 22:45:09,026 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1102 transitions. Word has length 139 [2025-03-16 22:45:09,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:45:09,028 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 1102 transitions. [2025-03-16 22:45:09,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 13.206896551724139) internal successors, (383), 28 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1102 transitions. [2025-03-16 22:45:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-16 22:45:09,030 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:45:09,030 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:45:09,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 22:45:09,234 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,SelfDestructingSolverStorable17 [2025-03-16 22:45:09,234 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:45:09,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:45:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash 454446615, now seen corresponding path program 1 times [2025-03-16 22:45:09,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:45:09,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834470594] [2025-03-16 22:45:09,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:09,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:45:09,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-16 22:45:09,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 22:45:09,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:09,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:11,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:45:11,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834470594] [2025-03-16 22:45:11,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834470594] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:45:11,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13724857] [2025-03-16 22:45:11,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:11,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:45:11,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:45:11,231 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) [2025-03-16 22:45:11,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 22:45:11,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-16 22:45:11,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 22:45:11,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:11,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:11,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-16 22:45:11,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:45:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 35 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 22:45:12,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:45:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 50 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:12,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13724857] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:45:12,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 22:45:12,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 38 [2025-03-16 22:45:12,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407747963] [2025-03-16 22:45:12,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 22:45:12,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-16 22:45:12,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:12,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-16 22:45:12,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2025-03-16 22:45:12,688 INFO L87 Difference]: Start difference. First operand 791 states and 1102 transitions. Second operand has 38 states, 38 states have (on average 8.789473684210526) internal successors, (334), 38 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:45:14,677 INFO L93 Difference]: Finished difference Result 3515 states and 4902 transitions. [2025-03-16 22:45:14,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-03-16 22:45:14,678 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 8.789473684210526) internal successors, (334), 38 states have internal predecessors, (334), 0 states have call successors, (0), 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 142 [2025-03-16 22:45:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:45:14,706 INFO L225 Difference]: With dead ends: 3515 [2025-03-16 22:45:14,706 INFO L226 Difference]: Without dead ends: 2795 [2025-03-16 22:45:14,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=661, Invalid=5039, Unknown=0, NotChecked=0, Total=5700 [2025-03-16 22:45:14,712 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 1718 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 3267 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 3281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 22:45:14,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 1018 Invalid, 3281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3267 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 22:45:14,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2025-03-16 22:45:14,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 1521. [2025-03-16 22:45:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 1.3953947368421054) internal successors, (2121), 1520 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2121 transitions. [2025-03-16 22:45:14,763 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2121 transitions. Word has length 142 [2025-03-16 22:45:14,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:45:14,764 INFO L471 AbstractCegarLoop]: Abstraction has 1521 states and 2121 transitions. [2025-03-16 22:45:14,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.789473684210526) internal successors, (334), 38 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2121 transitions. [2025-03-16 22:45:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-16 22:45:14,767 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:45:14,767 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:45:14,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-16 22:45:14,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:45:14,971 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:45:14,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:45:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1686305959, now seen corresponding path program 1 times [2025-03-16 22:45:14,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:45:14,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371417306] [2025-03-16 22:45:14,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:14,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:45:15,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-16 22:45:15,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-16 22:45:15,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:15,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-16 22:45:16,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:45:16,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371417306] [2025-03-16 22:45:16,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371417306] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:45:16,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:45:16,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 22:45:16,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910198988] [2025-03-16 22:45:16,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:45:16,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 22:45:16,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:16,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 22:45:16,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 22:45:16,522 INFO L87 Difference]: Start difference. First operand 1521 states and 2121 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:16,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:45:16,874 INFO L93 Difference]: Finished difference Result 2677 states and 3730 transitions. [2025-03-16 22:45:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 22:45:16,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 143 [2025-03-16 22:45:16,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:45:16,879 INFO L225 Difference]: With dead ends: 2677 [2025-03-16 22:45:16,879 INFO L226 Difference]: Without dead ends: 1405 [2025-03-16 22:45:16,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-16 22:45:16,883 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 326 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 22:45:16,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 143 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 22:45:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2025-03-16 22:45:16,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1405. [2025-03-16 22:45:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 1.3924501424501425) internal successors, (1955), 1404 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 1955 transitions. [2025-03-16 22:45:16,908 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 1955 transitions. Word has length 143 [2025-03-16 22:45:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:45:16,908 INFO L471 AbstractCegarLoop]: Abstraction has 1405 states and 1955 transitions. [2025-03-16 22:45:16,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 1955 transitions. [2025-03-16 22:45:16,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-16 22:45:16,910 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:45:16,910 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:45:16,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-16 22:45:16,911 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:45:16,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:45:16,911 INFO L85 PathProgramCache]: Analyzing trace with hash -794830474, now seen corresponding path program 1 times [2025-03-16 22:45:16,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:45:16,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981951771] [2025-03-16 22:45:16,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:16,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:45:16,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-16 22:45:17,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-16 22:45:17,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:17,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 66 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:18,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:45:18,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981951771] [2025-03-16 22:45:18,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981951771] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:45:18,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587654879] [2025-03-16 22:45:18,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:18,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:45:18,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:45:18,919 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) [2025-03-16 22:45:18,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 22:45:19,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-16 22:45:19,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-16 22:45:19,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:19,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:19,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-16 22:45:19,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:45:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 22:45:19,873 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 22:45:19,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587654879] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:45:19,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 22:45:19,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2025-03-16 22:45:19,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305223834] [2025-03-16 22:45:19,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:45:19,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 22:45:19,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:19,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 22:45:19,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-16 22:45:19,874 INFO L87 Difference]: Start difference. First operand 1405 states and 1955 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:45:20,107 INFO L93 Difference]: Finished difference Result 2551 states and 3544 transitions. [2025-03-16 22:45:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 22:45:20,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 143 [2025-03-16 22:45:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:45:20,111 INFO L225 Difference]: With dead ends: 2551 [2025-03-16 22:45:20,111 INFO L226 Difference]: Without dead ends: 1381 [2025-03-16 22:45:20,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-16 22:45:20,114 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 261 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 22:45:20,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 158 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 22:45:20,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2025-03-16 22:45:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1381. [2025-03-16 22:45:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 1.3746376811594203) internal successors, (1897), 1380 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1897 transitions. [2025-03-16 22:45:20,132 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1897 transitions. Word has length 143 [2025-03-16 22:45:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:45:20,133 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 1897 transitions. [2025-03-16 22:45:20,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1897 transitions. [2025-03-16 22:45:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-16 22:45:20,135 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:45:20,135 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:45:20,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-16 22:45:20,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-16 22:45:20,336 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:45:20,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:45:20,337 INFO L85 PathProgramCache]: Analyzing trace with hash 794531234, now seen corresponding path program 1 times [2025-03-16 22:45:20,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:45:20,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216082668] [2025-03-16 22:45:20,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:20,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:45:20,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-16 22:45:21,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-16 22:45:21,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:21,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 66 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:23,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:45:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216082668] [2025-03-16 22:45:23,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216082668] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:45:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680337828] [2025-03-16 22:45:23,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:23,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:45:23,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:45:23,958 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) [2025-03-16 22:45:23,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 22:45:24,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-16 22:45:24,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-16 22:45:24,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:24,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:24,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 105 conjuncts are in the unsatisfiable core [2025-03-16 22:45:24,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:45:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:25,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:45:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 64 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:26,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680337828] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:45:26,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 22:45:26,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 41 [2025-03-16 22:45:26,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330424399] [2025-03-16 22:45:26,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 22:45:26,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-16 22:45:26,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:26,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-16 22:45:26,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1422, Unknown=0, NotChecked=0, Total=1640 [2025-03-16 22:45:26,246 INFO L87 Difference]: Start difference. First operand 1381 states and 1897 transitions. Second operand has 41 states, 41 states have (on average 8.75609756097561) internal successors, (359), 41 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:45:30,899 INFO L93 Difference]: Finished difference Result 4352 states and 6021 transitions. [2025-03-16 22:45:30,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-03-16 22:45:30,900 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 8.75609756097561) internal successors, (359), 41 states have internal predecessors, (359), 0 states have call successors, (0), 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 143 [2025-03-16 22:45:30,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:45:30,906 INFO L225 Difference]: With dead ends: 4352 [2025-03-16 22:45:30,907 INFO L226 Difference]: Without dead ends: 2706 [2025-03-16 22:45:30,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2494 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1032, Invalid=8670, Unknown=0, NotChecked=0, Total=9702 [2025-03-16 22:45:30,913 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 727 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 9584 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 9594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 9584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-16 22:45:30,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 2741 Invalid, 9594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 9584 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-16 22:45:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2025-03-16 22:45:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1341. [2025-03-16 22:45:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1340 states have (on average 1.3694029850746268) internal successors, (1835), 1340 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1835 transitions. [2025-03-16 22:45:30,937 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1835 transitions. Word has length 143 [2025-03-16 22:45:30,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:45:30,938 INFO L471 AbstractCegarLoop]: Abstraction has 1341 states and 1835 transitions. [2025-03-16 22:45:30,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 8.75609756097561) internal successors, (359), 41 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1835 transitions. [2025-03-16 22:45:30,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-16 22:45:30,940 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:45:30,940 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:45:30,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-16 22:45:31,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:45:31,141 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:45:31,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:45:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash 957998892, now seen corresponding path program 1 times [2025-03-16 22:45:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:45:31,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157475892] [2025-03-16 22:45:31,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:31,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:45:31,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 22:45:32,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 22:45:32,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:32,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 22:45:34,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:45:34,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157475892] [2025-03-16 22:45:34,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157475892] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:45:34,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:45:34,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:45:34,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309765978] [2025-03-16 22:45:34,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:45:34,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 22:45:34,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:34,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 22:45:34,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 22:45:34,169 INFO L87 Difference]: Start difference. First operand 1341 states and 1835 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:45:34,450 INFO L93 Difference]: Finished difference Result 2437 states and 3334 transitions. [2025-03-16 22:45:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 22:45:34,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 144 [2025-03-16 22:45:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:45:34,453 INFO L225 Difference]: With dead ends: 2437 [2025-03-16 22:45:34,454 INFO L226 Difference]: Without dead ends: 1269 [2025-03-16 22:45:34,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-16 22:45:34,456 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 204 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 22:45:34,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 153 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 22:45:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2025-03-16 22:45:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2025-03-16 22:45:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 1.3682965299684542) internal successors, (1735), 1268 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1735 transitions. [2025-03-16 22:45:34,474 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1735 transitions. Word has length 144 [2025-03-16 22:45:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:45:34,474 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 1735 transitions. [2025-03-16 22:45:34,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1735 transitions. [2025-03-16 22:45:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-16 22:45:34,476 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:45:34,476 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:45:34,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-16 22:45:34,477 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:45:34,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:45:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash 757091338, now seen corresponding path program 1 times [2025-03-16 22:45:34,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:45:34,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029447674] [2025-03-16 22:45:34,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:45:34,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 22:45:35,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 22:45:35,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:35,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:36,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:45:36,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029447674] [2025-03-16 22:45:36,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029447674] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:45:36,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441263929] [2025-03-16 22:45:36,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:36,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:45:36,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:45:36,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:45:36,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 22:45:37,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 22:45:37,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 22:45:37,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:37,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:37,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-16 22:45:37,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:45:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 31 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:38,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:45:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 37 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:38,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441263929] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:45:38,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 22:45:38,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2025-03-16 22:45:38,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315346113] [2025-03-16 22:45:38,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 22:45:38,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-16 22:45:38,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:38,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-16 22:45:38,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2025-03-16 22:45:38,794 INFO L87 Difference]: Start difference. First operand 1269 states and 1735 transitions. Second operand has 29 states, 29 states have (on average 12.827586206896552) internal successors, (372), 29 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:40,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:45:40,550 INFO L93 Difference]: Finished difference Result 5803 states and 7904 transitions. [2025-03-16 22:45:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-16 22:45:40,550 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 12.827586206896552) internal successors, (372), 29 states have internal predecessors, (372), 0 states have call successors, (0), 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 145 [2025-03-16 22:45:40,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:45:40,561 INFO L225 Difference]: With dead ends: 5803 [2025-03-16 22:45:40,561 INFO L226 Difference]: Without dead ends: 4707 [2025-03-16 22:45:40,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=488, Invalid=2934, Unknown=0, NotChecked=0, Total=3422 [2025-03-16 22:45:40,565 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 1422 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 3450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 22:45:40,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 1306 Invalid, 3450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3437 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 22:45:40,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2025-03-16 22:45:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 3559. [2025-03-16 22:45:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3559 states, 3558 states have (on average 1.380831928049466) internal successors, (4913), 3558 states have internal predecessors, (4913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 4913 transitions. [2025-03-16 22:45:40,654 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 4913 transitions. Word has length 145 [2025-03-16 22:45:40,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:45:40,654 INFO L471 AbstractCegarLoop]: Abstraction has 3559 states and 4913 transitions. [2025-03-16 22:45:40,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 12.827586206896552) internal successors, (372), 29 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 4913 transitions. [2025-03-16 22:45:40,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-16 22:45:40,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:45:40,657 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:45:40,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-16 22:45:40,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-16 22:45:40,858 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:45:40,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:45:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash 199943055, now seen corresponding path program 1 times [2025-03-16 22:45:40,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:45:40,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554562682] [2025-03-16 22:45:40,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:40,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:45:40,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-16 22:45:41,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-16 22:45:41,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:41,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 37 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:42,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:45:42,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554562682] [2025-03-16 22:45:42,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554562682] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:45:42,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503751469] [2025-03-16 22:45:42,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:42,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:45:42,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:45:42,129 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:45:42,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 22:45:42,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-16 22:45:42,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-16 22:45:42,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:42,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:42,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-16 22:45:42,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:45:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:43,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:45:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:43,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503751469] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:45:43,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 22:45:43,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 17 [2025-03-16 22:45:43,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850986086] [2025-03-16 22:45:43,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 22:45:43,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-16 22:45:43,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:43,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-16 22:45:43,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2025-03-16 22:45:43,521 INFO L87 Difference]: Start difference. First operand 3559 states and 4913 transitions. Second operand has 18 states, 18 states have (on average 17.833333333333332) internal successors, (321), 17 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) [2025-03-16 22:45:44,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:45:44,418 INFO L93 Difference]: Finished difference Result 13365 states and 18554 transitions. [2025-03-16 22:45:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-16 22:45:44,419 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 17.833333333333332) internal successors, (321), 17 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 146 [2025-03-16 22:45:44,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:45:44,442 INFO L225 Difference]: With dead ends: 13365 [2025-03-16 22:45:44,442 INFO L226 Difference]: Without dead ends: 9925 [2025-03-16 22:45:44,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2025-03-16 22:45:44,449 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 723 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 22:45:44,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 570 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 22:45:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9925 states. [2025-03-16 22:45:44,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9925 to 5459. [2025-03-16 22:45:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5459 states, 5458 states have (on average 1.3743129351410772) internal successors, (7501), 5458 states have internal predecessors, (7501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 7501 transitions. [2025-03-16 22:45:44,566 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 7501 transitions. Word has length 146 [2025-03-16 22:45:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:45:44,566 INFO L471 AbstractCegarLoop]: Abstraction has 5459 states and 7501 transitions. [2025-03-16 22:45:44,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.833333333333332) internal successors, (321), 17 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) [2025-03-16 22:45:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 7501 transitions. [2025-03-16 22:45:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 22:45:44,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:45:44,571 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:45:44,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-16 22:45:44,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-16 22:45:44,772 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:45:44,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:45:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1576899830, now seen corresponding path program 1 times [2025-03-16 22:45:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:45:44,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004922808] [2025-03-16 22:45:44,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:44,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:45:44,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 22:45:45,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 22:45:45,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:45,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 42 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:46,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:45:46,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004922808] [2025-03-16 22:45:46,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004922808] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 22:45:46,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731515597] [2025-03-16 22:45:46,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:46,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:45:46,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:45:46,885 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:45:46,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-16 22:45:47,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 22:45:47,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 22:45:47,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:47,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:47,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 124 conjuncts are in the unsatisfiable core [2025-03-16 22:45:47,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:45:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 33 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:48,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:45:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 69 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:45:49,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731515597] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:45:49,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 22:45:49,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21, 16] total 45 [2025-03-16 22:45:49,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505553592] [2025-03-16 22:45:49,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 22:45:49,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-16 22:45:49,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:49,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-16 22:45:49,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1695, Unknown=0, NotChecked=0, Total=2070 [2025-03-16 22:45:49,960 INFO L87 Difference]: Start difference. First operand 5459 states and 7501 transitions. Second operand has 46 states, 46 states have (on average 8.717391304347826) internal successors, (401), 45 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:45:53,582 INFO L93 Difference]: Finished difference Result 7869 states and 10746 transitions. [2025-03-16 22:45:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-03-16 22:45:53,582 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 8.717391304347826) internal successors, (401), 45 states have internal predecessors, (401), 0 states have call successors, (0), 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 147 [2025-03-16 22:45:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:45:53,595 INFO L225 Difference]: With dead ends: 7869 [2025-03-16 22:45:53,595 INFO L226 Difference]: Without dead ends: 6791 [2025-03-16 22:45:53,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1067, Invalid=5575, Unknown=0, NotChecked=0, Total=6642 [2025-03-16 22:45:53,600 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 1949 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 6882 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 6892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-16 22:45:53,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1949 Valid, 2155 Invalid, 6892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 6882 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-16 22:45:53,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6791 states. [2025-03-16 22:45:53,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6791 to 5996. [2025-03-16 22:45:53,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5996 states, 5995 states have (on average 1.3703085904920767) internal successors, (8215), 5995 states have internal predecessors, (8215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5996 states to 5996 states and 8215 transitions. [2025-03-16 22:45:53,672 INFO L78 Accepts]: Start accepts. Automaton has 5996 states and 8215 transitions. Word has length 147 [2025-03-16 22:45:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:45:53,672 INFO L471 AbstractCegarLoop]: Abstraction has 5996 states and 8215 transitions. [2025-03-16 22:45:53,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.717391304347826) internal successors, (401), 45 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:45:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5996 states and 8215 transitions. [2025-03-16 22:45:53,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 22:45:53,676 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:45:53,676 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:45:53,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-16 22:45:53,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-16 22:45:53,877 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:45:53,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:45:53,877 INFO L85 PathProgramCache]: Analyzing trace with hash -58803660, now seen corresponding path program 1 times [2025-03-16 22:45:53,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:45:53,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188590573] [2025-03-16 22:45:53,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:45:53,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:45:53,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 22:45:55,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 22:45:55,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:45:55,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:45:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-16 22:45:55,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:45:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188590573] [2025-03-16 22:45:55,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188590573] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:45:55,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:45:55,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:45:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189485373] [2025-03-16 22:45:55,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:45:55,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 22:45:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:45:55,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 22:45:55,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 22:45:55,562 INFO L87 Difference]: Start difference. First operand 5996 states and 8215 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)