./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 08:16:58,134 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 08:16:58,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 08:16:58,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 08:16:58,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 08:16:58,217 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 08:16:58,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 08:16:58,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 08:16:58,219 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 08:16:58,219 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 08:16:58,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 08:16:58,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 08:16:58,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 08:16:58,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 08:16:58,221 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 08:16:58,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 08:16:58,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 08:16:58,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 08:16:58,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 08:16:58,221 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 08:16:58,221 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 08:16:58,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 08:16:58,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 08:16:58,222 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 08:16:58,222 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 08:16:58,222 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 08:16:58,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 08:16:58,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 08:16:58,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 08:16:58,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 08:16:58,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 08:16:58,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 08:16:58,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 08:16:58,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 08:16:58,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 08:16:58,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 08:16:58,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 08:16:58,223 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 08:16:58,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 08:16:58,223 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 08:16:58,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 08:16:58,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 08:16:58,223 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 08:16:58,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 08:16:58,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 08:16:58,224 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-jdk21/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 -> e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 [2025-01-09 08:16:58,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 08:16:58,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 08:16:58,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 08:16:58,457 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 08:16:58,458 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 08:16:58,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2025-01-09 08:16:59,807 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/122ce14ad/c2190f93168b4a0f8595876419b18728/FLAG514d30284 [2025-01-09 08:17:00,093 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 08:17:00,094 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2025-01-09 08:17:00,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/122ce14ad/c2190f93168b4a0f8595876419b18728/FLAG514d30284 [2025-01-09 08:17:00,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/122ce14ad/c2190f93168b4a0f8595876419b18728 [2025-01-09 08:17:00,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 08:17:00,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 08:17:00,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 08:17:00,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 08:17:00,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 08:17:00,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56023a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00, skipping insertion in model container [2025-01-09 08:17:00,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,157 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 08:17:00,272 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2025-01-09 08:17:00,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 08:17:00,326 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 08:17:00,334 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2025-01-09 08:17:00,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 08:17:00,371 INFO L204 MainTranslator]: Completed translation [2025-01-09 08:17:00,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00 WrapperNode [2025-01-09 08:17:00,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 08:17:00,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 08:17:00,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 08:17:00,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 08:17:00,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,449 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 340 [2025-01-09 08:17:00,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 08:17:00,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 08:17:00,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 08:17:00,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 08:17:00,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,469 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,489 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]. [2025-01-09 08:17:00,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,501 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,506 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 08:17:00,524 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 08:17:00,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 08:17:00,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 08:17:00,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (1/1) ... [2025-01-09 08:17:00,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 08:17:00,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:00,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 08:17:00,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 08:17:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 08:17:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 08:17:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 08:17:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 08:17:00,667 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 08:17:00,669 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 08:17:01,043 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2025-01-09 08:17:01,044 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 08:17:01,051 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 08:17:01,052 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 08:17:01,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:17:01 BoogieIcfgContainer [2025-01-09 08:17:01,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 08:17:01,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 08:17:01,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 08:17:01,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 08:17:01,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 08:17:00" (1/3) ... [2025-01-09 08:17:01,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60688774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:17:01, skipping insertion in model container [2025-01-09 08:17:01,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:17:00" (2/3) ... [2025-01-09 08:17:01,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60688774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:17:01, skipping insertion in model container [2025-01-09 08:17:01,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:17:01" (3/3) ... [2025-01-09 08:17:01,060 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2025-01-09 08:17:01,071 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 08:17:01,073 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c that has 1 procedures, 62 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 08:17:01,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 08:17:01,124 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;@3e9e7968, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 08:17:01,125 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 08:17:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 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) [2025-01-09 08:17:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 08:17:01,132 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:01,133 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] [2025-01-09 08:17:01,133 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:01,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:01,137 INFO L85 PathProgramCache]: Analyzing trace with hash -11435034, now seen corresponding path program 1 times [2025-01-09 08:17:01,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:01,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010441215] [2025-01-09 08:17:01,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:01,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:01,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 08:17:01,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 08:17:01,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:01,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:01,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010441215] [2025-01-09 08:17:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010441215] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:17:01,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:17:01,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 08:17:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568150162] [2025-01-09 08:17:01,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:01,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 08:17:01,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:01,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 08:17:01,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 08:17:01,694 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 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) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:01,721 INFO L93 Difference]: Finished difference Result 101 states and 147 transitions. [2025-01-09 08:17:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 08:17:01,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-01-09 08:17:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:01,728 INFO L225 Difference]: With dead ends: 101 [2025-01-09 08:17:01,729 INFO L226 Difference]: Without dead ends: 61 [2025-01-09 08:17:01,731 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 [2025-01-09 08:17:01,733 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:01,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 08:17:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-09 08:17:01,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-01-09 08:17:01,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.45) internal successors, (87), 60 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:01,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2025-01-09 08:17:01,761 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 25 [2025-01-09 08:17:01,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:01,762 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2025-01-09 08:17:01,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2025-01-09 08:17:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 08:17:01,763 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:01,763 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] [2025-01-09 08:17:01,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 08:17:01,763 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:01,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:01,764 INFO L85 PathProgramCache]: Analyzing trace with hash -352790771, now seen corresponding path program 1 times [2025-01-09 08:17:01,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:01,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594989140] [2025-01-09 08:17:01,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:01,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:01,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-09 08:17:01,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 08:17:01,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:01,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:01,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:01,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594989140] [2025-01-09 08:17:01,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594989140] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:17:01,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:17:01,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 08:17:01,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988567437] [2025-01-09 08:17:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:01,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 08:17:01,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:01,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 08:17:01,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 08:17:01,925 INFO L87 Difference]: Start difference. First operand 61 states and 87 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:01,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:01,952 INFO L93 Difference]: Finished difference Result 102 states and 145 transitions. [2025-01-09 08:17:01,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 08:17:01,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-01-09 08:17:01,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:01,953 INFO L225 Difference]: With dead ends: 102 [2025-01-09 08:17:01,953 INFO L226 Difference]: Without dead ends: 63 [2025-01-09 08:17:01,954 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 [2025-01-09 08:17:01,954 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:01,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 08:17:01,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-01-09 08:17:01,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2025-01-09 08:17:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 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) [2025-01-09 08:17:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2025-01-09 08:17:01,958 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 26 [2025-01-09 08:17:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:01,958 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2025-01-09 08:17:01,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2025-01-09 08:17:01,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 08:17:01,959 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:01,960 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] [2025-01-09 08:17:01,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 08:17:01,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:01,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash 850422175, now seen corresponding path program 1 times [2025-01-09 08:17:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:01,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494260870] [2025-01-09 08:17:01,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:01,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:01,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 08:17:01,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 08:17:02,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:02,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494260870] [2025-01-09 08:17:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494260870] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:17:02,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:17:02,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 08:17:02,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537203214] [2025-01-09 08:17:02,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:02,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 08:17:02,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:02,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 08:17:02,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 08:17:02,286 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:02,315 INFO L93 Difference]: Finished difference Result 104 states and 146 transitions. [2025-01-09 08:17:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 08:17:02,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-01-09 08:17:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:02,316 INFO L225 Difference]: With dead ends: 104 [2025-01-09 08:17:02,316 INFO L226 Difference]: Without dead ends: 63 [2025-01-09 08:17:02,316 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 [2025-01-09 08:17:02,317 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:02,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 227 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 08:17:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-01-09 08:17:02,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2025-01-09 08:17:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2025-01-09 08:17:02,326 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 27 [2025-01-09 08:17:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:02,326 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2025-01-09 08:17:02,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2025-01-09 08:17:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 08:17:02,327 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:02,327 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] [2025-01-09 08:17:02,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 08:17:02,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:02,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:02,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1502170580, now seen corresponding path program 1 times [2025-01-09 08:17:02,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:02,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616332799] [2025-01-09 08:17:02,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:02,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:02,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-09 08:17:02,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 08:17:02,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:02,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:02,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616332799] [2025-01-09 08:17:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616332799] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:17:02,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:17:02,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 08:17:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841206574] [2025-01-09 08:17:02,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:02,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 08:17:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:02,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 08:17:02,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-09 08:17:02,735 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:02,844 INFO L93 Difference]: Finished difference Result 114 states and 158 transitions. [2025-01-09 08:17:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 08:17:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-01-09 08:17:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:02,846 INFO L225 Difference]: With dead ends: 114 [2025-01-09 08:17:02,846 INFO L226 Difference]: Without dead ends: 73 [2025-01-09 08:17:02,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-01-09 08:17:02,848 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 88 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:02,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 448 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 08:17:02,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-09 08:17:02,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2025-01-09 08:17:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.408450704225352) internal successors, (100), 71 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2025-01-09 08:17:02,859 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 28 [2025-01-09 08:17:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:02,860 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2025-01-09 08:17:02,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:02,860 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2025-01-09 08:17:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 08:17:02,861 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:02,861 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] [2025-01-09 08:17:02,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 08:17:02,861 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:02,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash -358005860, now seen corresponding path program 1 times [2025-01-09 08:17:02,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:02,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678991093] [2025-01-09 08:17:02,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:02,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:02,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 08:17:02,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 08:17:02,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:02,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:03,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:03,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678991093] [2025-01-09 08:17:03,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678991093] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:17:03,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:17:03,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 08:17:03,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56417416] [2025-01-09 08:17:03,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:03,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 08:17:03,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:03,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 08:17:03,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 08:17:03,145 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:03,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:03,182 INFO L93 Difference]: Finished difference Result 128 states and 176 transitions. [2025-01-09 08:17:03,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 08:17:03,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-01-09 08:17:03,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:03,184 INFO L225 Difference]: With dead ends: 128 [2025-01-09 08:17:03,184 INFO L226 Difference]: Without dead ends: 78 [2025-01-09 08:17:03,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 08:17:03,184 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 71 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:03,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 233 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 08:17:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-01-09 08:17:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2025-01-09 08:17:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 77 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2025-01-09 08:17:03,193 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 29 [2025-01-09 08:17:03,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:03,193 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2025-01-09 08:17:03,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:03,194 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2025-01-09 08:17:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 08:17:03,194 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:03,194 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] [2025-01-09 08:17:03,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 08:17:03,194 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:03,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:03,195 INFO L85 PathProgramCache]: Analyzing trace with hash 167789105, now seen corresponding path program 1 times [2025-01-09 08:17:03,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:03,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235001367] [2025-01-09 08:17:03,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:03,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:03,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 08:17:03,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 08:17:03,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:03,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:03,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:03,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235001367] [2025-01-09 08:17:03,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235001367] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:17:03,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:17:03,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 08:17:03,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941015280] [2025-01-09 08:17:03,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:03,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 08:17:03,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:03,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 08:17:03,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 08:17:03,315 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:03,382 INFO L93 Difference]: Finished difference Result 166 states and 220 transitions. [2025-01-09 08:17:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 08:17:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-01-09 08:17:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:03,386 INFO L225 Difference]: With dead ends: 166 [2025-01-09 08:17:03,389 INFO L226 Difference]: Without dead ends: 110 [2025-01-09 08:17:03,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-09 08:17:03,391 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 132 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:03,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 231 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 08:17:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-01-09 08:17:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2025-01-09 08:17:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 79 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2025-01-09 08:17:03,399 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 29 [2025-01-09 08:17:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:03,399 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2025-01-09 08:17:03,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2025-01-09 08:17:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 08:17:03,400 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:03,400 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] [2025-01-09 08:17:03,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 08:17:03,400 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:03,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:03,400 INFO L85 PathProgramCache]: Analyzing trace with hash 976517016, now seen corresponding path program 1 times [2025-01-09 08:17:03,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:03,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123522617] [2025-01-09 08:17:03,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:03,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:03,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-09 08:17:03,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 08:17:03,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:03,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:03,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:03,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123522617] [2025-01-09 08:17:03,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123522617] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:17:03,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:17:03,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 08:17:03,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129028741] [2025-01-09 08:17:03,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:03,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 08:17:03,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:03,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 08:17:03,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 08:17:03,556 INFO L87 Difference]: Start difference. First operand 80 states and 108 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:03,662 INFO L93 Difference]: Finished difference Result 148 states and 195 transitions. [2025-01-09 08:17:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 08:17:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-01-09 08:17:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:03,664 INFO L225 Difference]: With dead ends: 148 [2025-01-09 08:17:03,664 INFO L226 Difference]: Without dead ends: 92 [2025-01-09 08:17:03,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-09 08:17:03,665 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 98 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:03,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 254 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 08:17:03,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-01-09 08:17:03,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2025-01-09 08:17:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 81 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 110 transitions. [2025-01-09 08:17:03,673 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 110 transitions. Word has length 30 [2025-01-09 08:17:03,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:03,673 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 110 transitions. [2025-01-09 08:17:03,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2025-01-09 08:17:03,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-09 08:17:03,674 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:03,674 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] [2025-01-09 08:17:03,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 08:17:03,677 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:03,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:03,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1363753517, now seen corresponding path program 1 times [2025-01-09 08:17:03,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:03,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838153664] [2025-01-09 08:17:03,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:03,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-09 08:17:03,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-09 08:17:03,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:03,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:04,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:04,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838153664] [2025-01-09 08:17:04,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838153664] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:04,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099811175] [2025-01-09 08:17:04,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:04,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:04,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:04,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 08:17:04,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 08:17:04,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-09 08:17:04,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-09 08:17:04,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:04,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:04,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 08:17:04,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 08:17:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:04,446 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 08:17:04,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099811175] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:17:04,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 08:17:04,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2025-01-09 08:17:04,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691342869] [2025-01-09 08:17:04,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:04,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 08:17:04,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:04,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 08:17:04,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 08:17:04,449 INFO L87 Difference]: Start difference. First operand 82 states and 110 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:04,616 INFO L93 Difference]: Finished difference Result 155 states and 205 transitions. [2025-01-09 08:17:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 08:17:04,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-09 08:17:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:04,617 INFO L225 Difference]: With dead ends: 155 [2025-01-09 08:17:04,617 INFO L226 Difference]: Without dead ends: 99 [2025-01-09 08:17:04,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-01-09 08:17:04,618 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 106 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:04,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 69 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 08:17:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-01-09 08:17:04,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2025-01-09 08:17:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 93 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) [2025-01-09 08:17:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2025-01-09 08:17:04,623 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 49 [2025-01-09 08:17:04,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:04,623 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2025-01-09 08:17:04,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:04,623 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2025-01-09 08:17:04,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-01-09 08:17:04,624 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:04,624 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] [2025-01-09 08:17:04,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 08:17:04,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:04,830 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:04,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:04,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1274866513, now seen corresponding path program 1 times [2025-01-09 08:17:04,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:04,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114310249] [2025-01-09 08:17:04,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:04,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:04,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-01-09 08:17:04,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 08:17:04,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:04,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:05,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:05,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114310249] [2025-01-09 08:17:05,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114310249] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:05,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331592709] [2025-01-09 08:17:05,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:05,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:05,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:05,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 08:17:05,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 08:17:05,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-01-09 08:17:05,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 08:17:05,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:05,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:05,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 08:17:05,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 08:17:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:05,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 08:17:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:06,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331592709] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 08:17:06,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 08:17:06,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2025-01-09 08:17:06,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222170541] [2025-01-09 08:17:06,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 08:17:06,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 08:17:06,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:06,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 08:17:06,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-01-09 08:17:06,013 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:06,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:06,412 INFO L93 Difference]: Finished difference Result 191 states and 249 transitions. [2025-01-09 08:17:06,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 08:17:06,413 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-01-09 08:17:06,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:06,414 INFO L225 Difference]: With dead ends: 191 [2025-01-09 08:17:06,414 INFO L226 Difference]: Without dead ends: 135 [2025-01-09 08:17:06,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2025-01-09 08:17:06,416 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 365 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:06,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 195 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 08:17:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-01-09 08:17:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2025-01-09 08:17:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 104 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2025-01-09 08:17:06,420 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 50 [2025-01-09 08:17:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:06,420 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2025-01-09 08:17:06,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:06,421 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2025-01-09 08:17:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-09 08:17:06,421 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:06,424 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] [2025-01-09 08:17:06,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 08:17:06,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:06,626 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:06,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:06,627 INFO L85 PathProgramCache]: Analyzing trace with hash 936178296, now seen corresponding path program 1 times [2025-01-09 08:17:06,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:06,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379057943] [2025-01-09 08:17:06,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:06,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:06,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 08:17:06,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 08:17:06,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:06,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 08:17:07,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379057943] [2025-01-09 08:17:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379057943] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217676531] [2025-01-09 08:17:07,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:07,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:07,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:07,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 08:17:07,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 08:17:07,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 08:17:07,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 08:17:07,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:07,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:07,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-01-09 08:17:07,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 08:17:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:07,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 08:17:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:08,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217676531] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 08:17:08,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 08:17:08,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2025-01-09 08:17:08,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345499588] [2025-01-09 08:17:08,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 08:17:08,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 08:17:08,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:08,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 08:17:08,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2025-01-09 08:17:08,510 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:09,603 INFO L93 Difference]: Finished difference Result 178 states and 231 transitions. [2025-01-09 08:17:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 08:17:09,604 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-01-09 08:17:09,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:09,605 INFO L225 Difference]: With dead ends: 178 [2025-01-09 08:17:09,605 INFO L226 Difference]: Without dead ends: 122 [2025-01-09 08:17:09,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=357, Invalid=1899, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 08:17:09,606 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 217 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:09,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 229 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 08:17:09,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-01-09 08:17:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 111. [2025-01-09 08:17:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.309090909090909) internal successors, (144), 110 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2025-01-09 08:17:09,613 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 51 [2025-01-09 08:17:09,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:09,613 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2025-01-09 08:17:09,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2025-01-09 08:17:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-09 08:17:09,619 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:09,619 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 08:17:09,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 08:17:09,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:09,821 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:09,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:09,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1249252173, now seen corresponding path program 1 times [2025-01-09 08:17:09,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:09,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436155368] [2025-01-09 08:17:09,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:09,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:09,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-09 08:17:09,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 08:17:09,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:09,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:10,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:10,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436155368] [2025-01-09 08:17:10,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436155368] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:10,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581903858] [2025-01-09 08:17:10,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:10,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:10,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:10,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 08:17:10,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 08:17:10,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-09 08:17:10,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 08:17:10,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:10,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:10,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-09 08:17:10,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 08:17:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:10,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 08:17:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:11,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581903858] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 08:17:11,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 08:17:11,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2025-01-09 08:17:11,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316158408] [2025-01-09 08:17:11,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 08:17:11,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-09 08:17:11,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:11,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-09 08:17:11,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2025-01-09 08:17:11,455 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:12,880 INFO L93 Difference]: Finished difference Result 432 states and 557 transitions. [2025-01-09 08:17:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-01-09 08:17:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 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 70 [2025-01-09 08:17:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:12,883 INFO L225 Difference]: With dead ends: 432 [2025-01-09 08:17:12,883 INFO L226 Difference]: Without dead ends: 372 [2025-01-09 08:17:12,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=613, Invalid=3547, Unknown=0, NotChecked=0, Total=4160 [2025-01-09 08:17:12,886 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 531 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:12,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 665 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 08:17:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2025-01-09 08:17:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 227. [2025-01-09 08:17:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.323008849557522) internal successors, (299), 226 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 299 transitions. [2025-01-09 08:17:12,895 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 299 transitions. Word has length 70 [2025-01-09 08:17:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:12,896 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 299 transitions. [2025-01-09 08:17:12,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 299 transitions. [2025-01-09 08:17:12,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 08:17:12,897 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:12,897 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 08:17:12,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 08:17:13,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-09 08:17:13,098 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:13,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:13,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1191344208, now seen corresponding path program 1 times [2025-01-09 08:17:13,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:13,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464271773] [2025-01-09 08:17:13,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:13,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:13,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-09 08:17:13,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 08:17:13,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:13,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 08:17:14,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:14,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464271773] [2025-01-09 08:17:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464271773] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:17:14,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:17:14,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 08:17:14,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704090909] [2025-01-09 08:17:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:14,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 08:17:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:14,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 08:17:14,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 08:17:14,030 INFO L87 Difference]: Start difference. First operand 227 states and 299 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:14,151 INFO L93 Difference]: Finished difference Result 394 states and 522 transitions. [2025-01-09 08:17:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 08:17:14,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2025-01-09 08:17:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:14,154 INFO L225 Difference]: With dead ends: 394 [2025-01-09 08:17:14,155 INFO L226 Difference]: Without dead ends: 216 [2025-01-09 08:17:14,155 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 [2025-01-09 08:17:14,155 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 74 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:14,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 73 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 08:17:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-01-09 08:17:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2025-01-09 08:17:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.3209302325581396) internal successors, (284), 215 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 284 transitions. [2025-01-09 08:17:14,166 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 284 transitions. Word has length 71 [2025-01-09 08:17:14,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:14,166 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 284 transitions. [2025-01-09 08:17:14,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:14,166 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 284 transitions. [2025-01-09 08:17:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-09 08:17:14,170 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:14,170 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 08:17:14,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 08:17:14,170 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:14,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1675724371, now seen corresponding path program 1 times [2025-01-09 08:17:14,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:14,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48141563] [2025-01-09 08:17:14,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:14,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-01-09 08:17:14,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 08:17:14,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:14,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:15,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:15,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48141563] [2025-01-09 08:17:15,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48141563] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:15,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527702471] [2025-01-09 08:17:15,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:15,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:15,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:15,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 08:17:15,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 08:17:15,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-01-09 08:17:15,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 08:17:15,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:15,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:15,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-01-09 08:17:15,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 08:17:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:15,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 08:17:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:16,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527702471] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 08:17:16,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 08:17:16,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 38 [2025-01-09 08:17:16,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956034536] [2025-01-09 08:17:16,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 08:17:16,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-01-09 08:17:16,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:16,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-01-09 08:17:16,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 08:17:16,683 INFO L87 Difference]: Start difference. First operand 216 states and 284 transitions. Second operand has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:17,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:17,904 INFO L93 Difference]: Finished difference Result 930 states and 1224 transitions. [2025-01-09 08:17:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-09 08:17:17,904 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 0 states have call successors, (0), 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 72 [2025-01-09 08:17:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:17,907 INFO L225 Difference]: With dead ends: 930 [2025-01-09 08:17:17,907 INFO L226 Difference]: Without dead ends: 763 [2025-01-09 08:17:17,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=587, Invalid=3195, Unknown=0, NotChecked=0, Total=3782 [2025-01-09 08:17:17,909 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 466 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:17,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 592 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 08:17:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2025-01-09 08:17:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 533. [2025-01-09 08:17:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.330827067669173) internal successors, (708), 532 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 708 transitions. [2025-01-09 08:17:17,934 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 708 transitions. Word has length 72 [2025-01-09 08:17:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:17,934 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 708 transitions. [2025-01-09 08:17:17,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 708 transitions. [2025-01-09 08:17:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-09 08:17:17,936 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:17,936 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 08:17:17,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 08:17:18,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 08:17:18,138 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:18,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:18,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1198648893, now seen corresponding path program 1 times [2025-01-09 08:17:18,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:18,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681135092] [2025-01-09 08:17:18,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:18,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:18,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-01-09 08:17:18,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 08:17:18,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:18,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:18,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:18,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681135092] [2025-01-09 08:17:18,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681135092] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:18,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645665662] [2025-01-09 08:17:18,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:18,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:18,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:18,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 08:17:18,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 08:17:18,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-01-09 08:17:18,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 08:17:18,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:18,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:18,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-09 08:17:18,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 08:17:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:19,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 08:17:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 08:17:19,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645665662] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 08:17:19,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 08:17:19,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 24 [2025-01-09 08:17:19,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439194242] [2025-01-09 08:17:19,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 08:17:19,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 08:17:19,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:19,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 08:17:19,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2025-01-09 08:17:19,362 INFO L87 Difference]: Start difference. First operand 533 states and 708 transitions. Second operand has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:20,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:20,060 INFO L93 Difference]: Finished difference Result 1420 states and 1904 transitions. [2025-01-09 08:17:20,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 08:17:20,061 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2025-01-09 08:17:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:20,064 INFO L225 Difference]: With dead ends: 1420 [2025-01-09 08:17:20,064 INFO L226 Difference]: Without dead ends: 927 [2025-01-09 08:17:20,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=222, Invalid=1184, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 08:17:20,066 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 163 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:20,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 446 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 08:17:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2025-01-09 08:17:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 880. [2025-01-09 08:17:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 1.3378839590443685) internal successors, (1176), 879 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:20,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1176 transitions. [2025-01-09 08:17:20,086 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1176 transitions. Word has length 73 [2025-01-09 08:17:20,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:20,086 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 1176 transitions. [2025-01-09 08:17:20,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1176 transitions. [2025-01-09 08:17:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-09 08:17:20,087 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:20,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 08:17:20,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 08:17:20,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 08:17:20,291 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:20,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1033696741, now seen corresponding path program 1 times [2025-01-09 08:17:20,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:20,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126572632] [2025-01-09 08:17:20,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 08:17:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:20,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-09 08:17:20,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-09 08:17:20,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 08:17:20,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 08:17:20,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:20,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126572632] [2025-01-09 08:17:20,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126572632] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 08:17:20,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 08:17:20,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 08:17:20,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088789007] [2025-01-09 08:17:20,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:20,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 08:17:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:20,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 08:17:20,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 08:17:20,638 INFO L87 Difference]: Start difference. First operand 880 states and 1176 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:20,763 INFO L93 Difference]: Finished difference Result 1722 states and 2305 transitions. [2025-01-09 08:17:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 08:17:20,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-01-09 08:17:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:20,766 INFO L225 Difference]: With dead ends: 1722 [2025-01-09 08:17:20,766 INFO L226 Difference]: Without dead ends: 882 [2025-01-09 08:17:20,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-09 08:17:20,768 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 93 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:20,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 72 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 08:17:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2025-01-09 08:17:20,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 882. [2025-01-09 08:17:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.337116912599319) internal successors, (1178), 881 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1178 transitions. [2025-01-09 08:17:20,787 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1178 transitions. Word has length 74 [2025-01-09 08:17:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:20,787 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1178 transitions. [2025-01-09 08:17:20,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:20,787 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1178 transitions. [2025-01-09 08:17:20,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-01-09 08:17:20,789 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:20,789 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 08:17:20,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-09 08:17:20,789 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:20,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash 154887636, now seen corresponding path program 2 times [2025-01-09 08:17:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:20,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106684821] [2025-01-09 08:17:20,790 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 08:17:20,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:20,815 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-01-09 08:17:20,890 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-01-09 08:17:20,890 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 08:17:20,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 66 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 08:17:21,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:21,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106684821] [2025-01-09 08:17:21,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106684821] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:21,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884176644] [2025-01-09 08:17:21,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 08:17:21,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:21,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:21,264 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 08:17:21,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 08:17:21,442 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-01-09 08:17:21,767 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-01-09 08:17:21,767 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 08:17:21,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:21,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 08:17:21,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 08:17:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 08:17:21,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 08:17:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 08:17:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884176644] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 08:17:22,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 08:17:22,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2025-01-09 08:17:22,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410028691] [2025-01-09 08:17:22,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 08:17:22,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 08:17:22,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:22,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 08:17:22,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-01-09 08:17:22,311 INFO L87 Difference]: Start difference. First operand 882 states and 1178 transitions. Second operand has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:22,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:22,723 INFO L93 Difference]: Finished difference Result 2290 states and 3061 transitions. [2025-01-09 08:17:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 08:17:22,723 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 states have internal predecessors, (192), 0 states have call successors, (0), 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 [2025-01-09 08:17:22,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:22,728 INFO L225 Difference]: With dead ends: 2290 [2025-01-09 08:17:22,728 INFO L226 Difference]: Without dead ends: 1450 [2025-01-09 08:17:22,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2025-01-09 08:17:22,730 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 242 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:22,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 420 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 08:17:22,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2025-01-09 08:17:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1394. [2025-01-09 08:17:22,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.3237616654702082) internal successors, (1844), 1393 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1844 transitions. [2025-01-09 08:17:22,758 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1844 transitions. Word has length 91 [2025-01-09 08:17:22,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:22,759 INFO L471 AbstractCegarLoop]: Abstraction has 1394 states and 1844 transitions. [2025-01-09 08:17:22,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1844 transitions. [2025-01-09 08:17:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-01-09 08:17:22,761 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:22,761 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-01-09 08:17:22,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 08:17:22,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:22,962 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:22,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:22,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1840237430, now seen corresponding path program 3 times [2025-01-09 08:17:22,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:22,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026935077] [2025-01-09 08:17:22,962 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 08:17:22,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:22,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 92 statements into 4 equivalence classes. [2025-01-09 08:17:23,129 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 71 of 92 statements. [2025-01-09 08:17:23,129 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 08:17:23,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 36 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 08:17:24,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:24,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026935077] [2025-01-09 08:17:24,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026935077] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:24,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587484263] [2025-01-09 08:17:24,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 08:17:24,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:24,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:24,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 08:17:24,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 08:17:24,234 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 92 statements into 4 equivalence classes. [2025-01-09 08:17:24,325 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 71 of 92 statements. [2025-01-09 08:17:24,325 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 08:17:24,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:24,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 122 conjuncts are in the unsatisfiable core [2025-01-09 08:17:24,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 08:17:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-01-09 08:17:25,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 08:17:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 53 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 08:17:26,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587484263] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 08:17:26,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 08:17:26,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 16] total 34 [2025-01-09 08:17:26,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280675245] [2025-01-09 08:17:26,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 08:17:26,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-09 08:17:26,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:26,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-09 08:17:26,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 08:17:26,268 INFO L87 Difference]: Start difference. First operand 1394 states and 1844 transitions. Second operand has 34 states, 34 states have (on average 6.176470588235294) internal successors, (210), 34 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:29,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:29,317 INFO L93 Difference]: Finished difference Result 4383 states and 5820 transitions. [2025-01-09 08:17:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2025-01-09 08:17:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.176470588235294) internal successors, (210), 34 states have internal predecessors, (210), 0 states have call successors, (0), 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 [2025-01-09 08:17:29,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:29,325 INFO L225 Difference]: With dead ends: 4383 [2025-01-09 08:17:29,325 INFO L226 Difference]: Without dead ends: 2927 [2025-01-09 08:17:29,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=945, Invalid=7985, Unknown=0, NotChecked=0, Total=8930 [2025-01-09 08:17:29,328 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 556 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:29,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1056 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-09 08:17:29,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2025-01-09 08:17:29,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2811. [2025-01-09 08:17:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2810 states have (on average 1.291814946619217) internal successors, (3630), 2810 states have internal predecessors, (3630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3630 transitions. [2025-01-09 08:17:29,377 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3630 transitions. Word has length 92 [2025-01-09 08:17:29,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:29,377 INFO L471 AbstractCegarLoop]: Abstraction has 2811 states and 3630 transitions. [2025-01-09 08:17:29,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.176470588235294) internal successors, (210), 34 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3630 transitions. [2025-01-09 08:17:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-01-09 08:17:29,378 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:29,378 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 08:17:29,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 08:17:29,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 08:17:29,579 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:29,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:29,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1448479113, now seen corresponding path program 2 times [2025-01-09 08:17:29,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:29,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062604399] [2025-01-09 08:17:29,580 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 08:17:29,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:29,604 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 94 statements into 2 equivalence classes. [2025-01-09 08:17:29,748 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 94 of 94 statements. [2025-01-09 08:17:29,748 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 08:17:29,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 43 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 08:17:30,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:30,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062604399] [2025-01-09 08:17:30,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062604399] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:30,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248683270] [2025-01-09 08:17:30,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 08:17:30,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:30,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:30,170 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 08:17:30,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 08:17:30,365 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 94 statements into 2 equivalence classes. [2025-01-09 08:17:30,646 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 94 of 94 statements. [2025-01-09 08:17:30,646 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 08:17:30,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:30,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-01-09 08:17:30,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 08:17:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 70 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 08:17:31,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 08:17:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 08:17:31,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248683270] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:31,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 08:17:31,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 9] total 23 [2025-01-09 08:17:31,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037927856] [2025-01-09 08:17:31,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 08:17:31,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 08:17:31,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:31,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 08:17:31,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2025-01-09 08:17:31,473 INFO L87 Difference]: Start difference. First operand 2811 states and 3630 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:31,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:31,821 INFO L93 Difference]: Finished difference Result 6441 states and 8274 transitions. [2025-01-09 08:17:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 08:17:31,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-01-09 08:17:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:31,829 INFO L225 Difference]: With dead ends: 6441 [2025-01-09 08:17:31,829 INFO L226 Difference]: Without dead ends: 3613 [2025-01-09 08:17:31,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2025-01-09 08:17:31,832 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 89 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:31,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 282 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 08:17:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3613 states. [2025-01-09 08:17:31,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3613 to 3535. [2025-01-09 08:17:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3534 states have (on average 1.2795698924731183) internal successors, (4522), 3534 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 4522 transitions. [2025-01-09 08:17:31,894 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 4522 transitions. Word has length 94 [2025-01-09 08:17:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:31,894 INFO L471 AbstractCegarLoop]: Abstraction has 3535 states and 4522 transitions. [2025-01-09 08:17:31,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 4522 transitions. [2025-01-09 08:17:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-01-09 08:17:31,895 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 08:17:31,895 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 08:17:31,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 08:17:32,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 08:17:32,099 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 08:17:32,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 08:17:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1878894513, now seen corresponding path program 3 times [2025-01-09 08:17:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 08:17:32,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28680621] [2025-01-09 08:17:32,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 08:17:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 08:17:32,181 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 4 equivalence classes. [2025-01-09 08:17:32,228 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 53 of 95 statements. [2025-01-09 08:17:32,228 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 08:17:32,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-01-09 08:17:33,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 08:17:33,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28680621] [2025-01-09 08:17:33,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28680621] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 08:17:33,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747415438] [2025-01-09 08:17:33,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 08:17:33,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:33,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 08:17:33,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 08:17:33,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 08:17:33,236 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 4 equivalence classes. [2025-01-09 08:17:33,489 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 53 of 95 statements. [2025-01-09 08:17:33,489 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 08:17:33,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 08:17:33,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 78 conjuncts are in the unsatisfiable core [2025-01-09 08:17:33,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 08:17:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-01-09 08:17:34,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 08:17:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 27 proven. 26 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-01-09 08:17:35,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747415438] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 08:17:35,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 08:17:35,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 29 [2025-01-09 08:17:35,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490284260] [2025-01-09 08:17:35,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 08:17:35,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 08:17:35,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 08:17:35,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 08:17:35,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2025-01-09 08:17:35,029 INFO L87 Difference]: Start difference. First operand 3535 states and 4522 transitions. Second operand has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 29 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 08:17:35,677 INFO L93 Difference]: Finished difference Result 3602 states and 4597 transitions. [2025-01-09 08:17:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 08:17:35,678 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 29 states have internal predecessors, (161), 0 states have call successors, (0), 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 [2025-01-09 08:17:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 08:17:35,682 INFO L225 Difference]: With dead ends: 3602 [2025-01-09 08:17:35,682 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 08:17:35,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=256, Invalid=1384, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 08:17:35,690 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 103 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 08:17:35,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 186 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 08:17:35,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 08:17:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 08:17:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:35,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 08:17:35,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2025-01-09 08:17:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 08:17:35,691 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 08:17:35,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 29 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 08:17:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 08:17:35,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 08:17:35,694 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 08:17:35,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 08:17:35,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 08:17:35,897 INFO L422 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 08:17:35,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 08:17:35,985 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 08:17:35,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 08:17:35 BoogieIcfgContainer [2025-01-09 08:17:35,997 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 08:17:35,998 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 08:17:35,998 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 08:17:35,998 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 08:17:35,999 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:17:01" (3/4) ... [2025-01-09 08:17:36,001 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 08:17:36,018 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-01-09 08:17:36,019 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 08:17:36,019 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 08:17:36,019 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 08:17:36,116 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 08:17:36,117 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 08:17:36,117 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 08:17:36,118 INFO L158 Benchmark]: Toolchain (without parser) took 35987.16ms. Allocated memory was 167.8MB in the beginning and 897.6MB in the end (delta: 729.8MB). Free memory was 131.4MB in the beginning and 783.3MB in the end (delta: -651.9MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. [2025-01-09 08:17:36,118 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 209.7MB. Free memory is still 133.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 08:17:36,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.86ms. Allocated memory is still 167.8MB. Free memory was 131.0MB in the beginning and 116.5MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 08:17:36,119 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.69ms. Allocated memory is still 167.8MB. Free memory was 116.5MB in the beginning and 110.8MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 08:17:36,119 INFO L158 Benchmark]: Boogie Preprocessor took 73.31ms. Allocated memory is still 167.8MB. Free memory was 110.8MB in the beginning and 106.9MB in the end (delta: 3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 08:17:36,119 INFO L158 Benchmark]: RCFGBuilder took 528.22ms. Allocated memory is still 167.8MB. Free memory was 106.9MB in the beginning and 73.0MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-01-09 08:17:36,120 INFO L158 Benchmark]: TraceAbstraction took 34943.22ms. Allocated memory was 167.8MB in the beginning and 897.6MB in the end (delta: 729.8MB). Free memory was 72.6MB in the beginning and 791.7MB in the end (delta: -719.1MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2025-01-09 08:17:36,120 INFO L158 Benchmark]: Witness Printer took 118.75ms. Allocated memory is still 897.6MB. Free memory was 791.7MB in the beginning and 783.3MB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 08:17:36,122 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 209.7MB. Free memory is still 133.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.86ms. Allocated memory is still 167.8MB. Free memory was 131.0MB in the beginning and 116.5MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.69ms. Allocated memory is still 167.8MB. Free memory was 116.5MB in the beginning and 110.8MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 73.31ms. Allocated memory is still 167.8MB. Free memory was 110.8MB in the beginning and 106.9MB in the end (delta: 3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 528.22ms. Allocated memory is still 167.8MB. Free memory was 106.9MB in the beginning and 73.0MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 34943.22ms. Allocated memory was 167.8MB in the beginning and 897.6MB in the end (delta: 729.8MB). Free memory was 72.6MB in the beginning and 791.7MB in the end (delta: -719.1MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Witness Printer took 118.75ms. Allocated memory is still 897.6MB. Free memory was 791.7MB in the beginning and 783.3MB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.8s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3400 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3400 mSDsluCounter, 6160 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5170 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11356 IncrementalHoareTripleChecker+Invalid, 11476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 990 mSDtfsCounter, 11356 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1774 GetRequests, 1323 SyntacticMatches, 2 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5684 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3535occurred in iteration=18, InterpolantAutomatonStates: 284, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 759 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 1813 NumberOfCodeBlocks, 1687 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 2463 ConstructedInterpolants, 0 QuantifiedInterpolants, 20439 SizeOfPredicates, 43 NumberOfNonLiveVariables, 5122 ConjunctsInSsa, 557 ConjunctsInUnsatCore, 38 InterpolantComputations, 11 PerfectInterpolantSequences, 1460/1811 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: ((((((((var_12 == 1) && (state_28 == 0)) && (state_8 == 0)) && (state_60 == 0)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) RESULT: Ultimate proved your program to be correct! [2025-01-09 08:17:36,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE