./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 726c27beb485f609d605f0581621ddf01187954349267fe751f77dd8e4a5e6ab --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 16:13:13,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 16:13:13,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 16:13:13,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 16:13:13,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 16:13:13,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 16:13:13,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 16:13:13,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 16:13:13,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 16:13:13,321 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 16:13:13,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 16:13:13,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 16:13:13,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 16:13:13,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 16:13:13,322 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 16:13:13,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 16:13:13,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 16:13:13,322 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 16:13:13,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 16:13:13,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 16:13:13,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 16:13:13,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 16:13:13,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 16:13:13,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 16:13:13,323 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 16:13:13,323 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 16:13:13,323 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 16:13:13,323 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 16:13:13,323 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 16:13:13,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 16:13:13,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 16:13:13,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 16:13:13,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 16:13:13,324 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 16:13:13,324 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 16:13:13,324 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 16:13:13,324 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 16:13:13,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 16:13:13,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 16:13:13,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 16:13:13,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 16:13:13,325 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 16:13:13,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 16:13:13,325 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 726c27beb485f609d605f0581621ddf01187954349267fe751f77dd8e4a5e6ab [2025-03-03 16:13:13,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 16:13:13,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 16:13:13,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 16:13:13,603 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 16:13:13,603 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 16:13:13,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c [2025-03-03 16:13:14,782 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd44588c2/12e5a1334571400fbe2722a48a50dcf1/FLAG446d5af70 [2025-03-03 16:13:15,299 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 16:13:15,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c [2025-03-03 16:13:15,336 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd44588c2/12e5a1334571400fbe2722a48a50dcf1/FLAG446d5af70 [2025-03-03 16:13:15,840 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd44588c2/12e5a1334571400fbe2722a48a50dcf1 [2025-03-03 16:13:15,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 16:13:15,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 16:13:15,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 16:13:15,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 16:13:15,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 16:13:15,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 04:13:15" (1/1) ... [2025-03-03 16:13:15,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efb4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:15, skipping insertion in model container [2025-03-03 16:13:15,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 04:13:15" (1/1) ... [2025-03-03 16:13:15,919 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 16:13:16,251 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c[15510,15523] [2025-03-03 16:13:16,299 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c[21065,21078] [2025-03-03 16:13:16,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 16:13:16,728 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 16:13:16,769 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c[15510,15523] [2025-03-03 16:13:16,778 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c[21065,21078] [2025-03-03 16:13:17,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 16:13:17,032 INFO L204 MainTranslator]: Completed translation [2025-03-03 16:13:17,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17 WrapperNode [2025-03-03 16:13:17,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 16:13:17,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 16:13:17,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 16:13:17,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 16:13:17,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,304 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5151 [2025-03-03 16:13:17,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 16:13:17,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 16:13:17,306 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 16:13:17,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 16:13:17,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,482 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 16:13:17,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,568 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 16:13:17,680 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 16:13:17,681 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 16:13:17,681 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 16:13:17,682 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (1/1) ... [2025-03-03 16:13:17,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 16:13:17,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:13:17,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 16:13:17,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 16:13:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 16:13:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 16:13:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 16:13:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 16:13:17,814 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 16:13:17,816 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 16:13:21,210 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3685: havoc calculate_output2_#t~ret42#1; [2025-03-03 16:13:21,211 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5175: havoc calculate_output3_#t~ret43#1; [2025-03-03 16:13:21,211 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2206: havoc calculate_output_#t~ret41#1; [2025-03-03 16:13:21,389 INFO L? ?]: Removed 749 outVars from TransFormulas that were not future-live. [2025-03-03 16:13:21,390 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 16:13:21,427 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 16:13:21,428 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 16:13:21,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 04:13:21 BoogieIcfgContainer [2025-03-03 16:13:21,428 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 16:13:21,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 16:13:21,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 16:13:21,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 16:13:21,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 04:13:15" (1/3) ... [2025-03-03 16:13:21,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ff67af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 04:13:21, skipping insertion in model container [2025-03-03 16:13:21,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:13:17" (2/3) ... [2025-03-03 16:13:21,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ff67af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 04:13:21, skipping insertion in model container [2025-03-03 16:13:21,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 04:13:21" (3/3) ... [2025-03-03 16:13:21,439 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c [2025-03-03 16:13:21,450 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 16:13:21,453 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c that has 1 procedures, 915 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-03 16:13:21,516 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 16:13:21,525 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;@34f0dd3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 16:13:21,525 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-03 16:13:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 915 states, 912 states have (on average 1.9024122807017543) internal successors, (1735), 914 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:21,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-03 16:13:21,540 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:21,541 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] [2025-03-03 16:13:21,541 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:21,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:21,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1738102833, now seen corresponding path program 1 times [2025-03-03 16:13:21,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:21,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217448869] [2025-03-03 16:13:21,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:21,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:21,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-03 16:13:21,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-03 16:13:21,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:21,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:21,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:21,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217448869] [2025-03-03 16:13:21,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217448869] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:21,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:21,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 16:13:21,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135214946] [2025-03-03 16:13:21,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:21,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 16:13:21,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:21,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 16:13:21,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 16:13:21,790 INFO L87 Difference]: Start difference. First operand has 915 states, 912 states have (on average 1.9024122807017543) internal successors, (1735), 914 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 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) [2025-03-03 16:13:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:21,852 INFO L93 Difference]: Finished difference Result 1783 states and 3381 transitions. [2025-03-03 16:13:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 16:13:21,854 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 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 [2025-03-03 16:13:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:21,867 INFO L225 Difference]: With dead ends: 1783 [2025-03-03 16:13:21,868 INFO L226 Difference]: Without dead ends: 850 [2025-03-03 16:13:21,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 16:13:21,877 INFO L435 NwaCegarLoop]: 1669 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:21,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2025-03-03 16:13:21,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2025-03-03 16:13:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 848 states have (on average 1.892688679245283) internal successors, (1605), 849 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1605 transitions. [2025-03-03 16:13:21,949 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1605 transitions. Word has length 26 [2025-03-03 16:13:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:21,949 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 1605 transitions. [2025-03-03 16:13:21,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 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) [2025-03-03 16:13:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1605 transitions. [2025-03-03 16:13:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-03 16:13:21,951 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:21,951 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] [2025-03-03 16:13:21,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 16:13:21,952 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:21,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2146927058, now seen corresponding path program 1 times [2025-03-03 16:13:21,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:21,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285293576] [2025-03-03 16:13:21,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:21,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:21,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-03 16:13:21,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-03 16:13:21,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:21,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:22,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285293576] [2025-03-03 16:13:22,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285293576] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:22,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:22,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 16:13:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978708622] [2025-03-03 16:13:22,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:22,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 16:13:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:22,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 16:13:22,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:13:22,209 INFO L87 Difference]: Start difference. First operand 850 states and 1605 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2025-03-03 16:13:22,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:22,331 INFO L93 Difference]: Finished difference Result 904 states and 1689 transitions. [2025-03-03 16:13:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 16:13:22,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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 [2025-03-03 16:13:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:22,335 INFO L225 Difference]: With dead ends: 904 [2025-03-03 16:13:22,335 INFO L226 Difference]: Without dead ends: 850 [2025-03-03 16:13:22,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:13:22,336 INFO L435 NwaCegarLoop]: 1603 mSDtfsCounter, 0 mSDsluCounter, 4764 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6367 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:22,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6367 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:13:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2025-03-03 16:13:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2025-03-03 16:13:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 848 states have (on average 1.8455188679245282) internal successors, (1565), 849 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1565 transitions. [2025-03-03 16:13:22,361 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1565 transitions. Word has length 26 [2025-03-03 16:13:22,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:22,361 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 1565 transitions. [2025-03-03 16:13:22,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2025-03-03 16:13:22,361 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1565 transitions. [2025-03-03 16:13:22,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-03 16:13:22,362 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:22,362 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:22,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 16:13:22,362 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:22,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:22,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2048379036, now seen corresponding path program 1 times [2025-03-03 16:13:22,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:22,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132014086] [2025-03-03 16:13:22,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:22,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:22,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-03 16:13:22,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-03 16:13:22,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:22,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:22,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:22,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132014086] [2025-03-03 16:13:22,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132014086] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:22,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:22,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:22,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764203467] [2025-03-03 16:13:22,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:22,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:13:22,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:22,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:13:22,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:13:22,563 INFO L87 Difference]: Start difference. First operand 850 states and 1565 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:27,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:27,405 INFO L93 Difference]: Finished difference Result 3105 states and 5874 transitions. [2025-03-03 16:13:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:13:27,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2025-03-03 16:13:27,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:27,414 INFO L225 Difference]: With dead ends: 3105 [2025-03-03 16:13:27,415 INFO L226 Difference]: Without dead ends: 2352 [2025-03-03 16:13:27,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:13:27,416 INFO L435 NwaCegarLoop]: 801 mSDtfsCounter, 2469 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2469 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:27,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2469 Valid, 819 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2025-03-03 16:13:27,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2025-03-03 16:13:27,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2352. [2025-03-03 16:13:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2350 states have (on average 1.565531914893617) internal successors, (3679), 2351 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3679 transitions. [2025-03-03 16:13:27,458 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3679 transitions. Word has length 48 [2025-03-03 16:13:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:27,459 INFO L471 AbstractCegarLoop]: Abstraction has 2352 states and 3679 transitions. [2025-03-03 16:13:27,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3679 transitions. [2025-03-03 16:13:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-03 16:13:27,460 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:27,460 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:27,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 16:13:27,460 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:27,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:27,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1878112614, now seen corresponding path program 1 times [2025-03-03 16:13:27,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:27,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900380587] [2025-03-03 16:13:27,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:27,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:27,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-03 16:13:27,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-03 16:13:27,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:27,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:27,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:27,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900380587] [2025-03-03 16:13:27,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900380587] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:27,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:27,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 16:13:27,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731921646] [2025-03-03 16:13:27,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:27,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 16:13:27,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:27,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 16:13:27,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:13:27,696 INFO L87 Difference]: Start difference. First operand 2352 states and 3679 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2025-03-03 16:13:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:27,911 INFO L93 Difference]: Finished difference Result 2952 states and 4639 transitions. [2025-03-03 16:13:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-03 16:13:27,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 65 [2025-03-03 16:13:27,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:27,921 INFO L225 Difference]: With dead ends: 2952 [2025-03-03 16:13:27,921 INFO L226 Difference]: Without dead ends: 2902 [2025-03-03 16:13:27,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2025-03-03 16:13:27,922 INFO L435 NwaCegarLoop]: 1559 mSDtfsCounter, 9729 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9729 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:27,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9729 Valid, 3527 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:13:27,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2025-03-03 16:13:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2400. [2025-03-03 16:13:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2398 states have (on average 1.5663052543786489) internal successors, (3756), 2399 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3756 transitions. [2025-03-03 16:13:27,967 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3756 transitions. Word has length 65 [2025-03-03 16:13:27,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:27,967 INFO L471 AbstractCegarLoop]: Abstraction has 2400 states and 3756 transitions. [2025-03-03 16:13:27,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2025-03-03 16:13:27,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3756 transitions. [2025-03-03 16:13:27,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-03 16:13:27,969 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:27,969 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:27,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 16:13:27,969 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:27,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash 140395509, now seen corresponding path program 1 times [2025-03-03 16:13:27,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:27,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47845673] [2025-03-03 16:13:27,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:27,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-03 16:13:27,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 16:13:27,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:27,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:28,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:28,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47845673] [2025-03-03 16:13:28,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47845673] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:28,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:28,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:28,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274363882] [2025-03-03 16:13:28,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:28,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:28,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:28,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:28,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:28,096 INFO L87 Difference]: Start difference. First operand 2400 states and 3756 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:28,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:28,134 INFO L93 Difference]: Finished difference Result 2585 states and 4051 transitions. [2025-03-03 16:13:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:28,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2025-03-03 16:13:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:28,145 INFO L225 Difference]: With dead ends: 2585 [2025-03-03 16:13:28,145 INFO L226 Difference]: Without dead ends: 2487 [2025-03-03 16:13:28,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:28,149 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 1492 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:28,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1634 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:28,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2025-03-03 16:13:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2483. [2025-03-03 16:13:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.5663039097138252) internal successors, (3886), 2482 states have internal predecessors, (3886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3886 transitions. [2025-03-03 16:13:28,201 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3886 transitions. Word has length 67 [2025-03-03 16:13:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:28,202 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 3886 transitions. [2025-03-03 16:13:28,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3886 transitions. [2025-03-03 16:13:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-03 16:13:28,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:28,204 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:28,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 16:13:28,205 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:28,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:28,205 INFO L85 PathProgramCache]: Analyzing trace with hash 172718744, now seen corresponding path program 1 times [2025-03-03 16:13:28,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:28,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781397418] [2025-03-03 16:13:28,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:28,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-03 16:13:28,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 16:13:28,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:28,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:28,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:28,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781397418] [2025-03-03 16:13:28,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781397418] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:28,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:28,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 16:13:28,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621539323] [2025-03-03 16:13:28,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:28,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 16:13:28,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:28,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 16:13:28,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:13:28,557 INFO L87 Difference]: Start difference. First operand 2483 states and 3886 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:28,739 INFO L93 Difference]: Finished difference Result 2666 states and 4174 transitions. [2025-03-03 16:13:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 16:13:28,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2025-03-03 16:13:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:28,746 INFO L225 Difference]: With dead ends: 2666 [2025-03-03 16:13:28,746 INFO L226 Difference]: Without dead ends: 2485 [2025-03-03 16:13:28,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2025-03-03 16:13:28,748 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 7515 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7515 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:28,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7515 Valid, 1941 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:13:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2025-03-03 16:13:28,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2025-03-03 16:13:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.5654977831519548) internal successors, (3884), 2482 states have internal predecessors, (3884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3884 transitions. [2025-03-03 16:13:28,787 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3884 transitions. Word has length 67 [2025-03-03 16:13:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:28,787 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 3884 transitions. [2025-03-03 16:13:28,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3884 transitions. [2025-03-03 16:13:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 16:13:28,788 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:28,788 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:28,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 16:13:28,788 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:28,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:28,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1089851502, now seen corresponding path program 1 times [2025-03-03 16:13:28,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:28,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209260201] [2025-03-03 16:13:28,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:28,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:28,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 16:13:28,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 16:13:28,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:28,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:28,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:28,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209260201] [2025-03-03 16:13:28,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209260201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:28,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:28,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 16:13:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611213657] [2025-03-03 16:13:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:28,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 16:13:28,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:28,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 16:13:28,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:13:28,996 INFO L87 Difference]: Start difference. First operand 2483 states and 3884 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:29,050 INFO L93 Difference]: Finished difference Result 2491 states and 3893 transitions. [2025-03-03 16:13:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 16:13:29,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-03 16:13:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:29,059 INFO L225 Difference]: With dead ends: 2491 [2025-03-03 16:13:29,059 INFO L226 Difference]: Without dead ends: 2489 [2025-03-03 16:13:29,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:13:29,060 INFO L435 NwaCegarLoop]: 1559 mSDtfsCounter, 0 mSDsluCounter, 9341 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10900 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:29,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10900 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2025-03-03 16:13:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2489. [2025-03-03 16:13:29,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 2487 states have (on average 1.5637314032971452) internal successors, (3889), 2488 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3889 transitions. [2025-03-03 16:13:29,095 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3889 transitions. Word has length 68 [2025-03-03 16:13:29,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:29,096 INFO L471 AbstractCegarLoop]: Abstraction has 2489 states and 3889 transitions. [2025-03-03 16:13:29,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3889 transitions. [2025-03-03 16:13:29,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 16:13:29,097 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:29,097 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:29,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 16:13:29,098 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:29,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:29,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1188896010, now seen corresponding path program 1 times [2025-03-03 16:13:29,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:29,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172041283] [2025-03-03 16:13:29,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:29,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:29,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 16:13:29,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 16:13:29,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:29,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:29,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172041283] [2025-03-03 16:13:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172041283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:29,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:29,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814531931] [2025-03-03 16:13:29,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:29,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:29,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:29,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:29,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,148 INFO L87 Difference]: Start difference. First operand 2489 states and 3889 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:29,167 INFO L93 Difference]: Finished difference Result 2847 states and 4441 transitions. [2025-03-03 16:13:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-03 16:13:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:29,175 INFO L225 Difference]: With dead ends: 2847 [2025-03-03 16:13:29,175 INFO L226 Difference]: Without dead ends: 2660 [2025-03-03 16:13:29,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,177 INFO L435 NwaCegarLoop]: 1622 mSDtfsCounter, 1507 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:29,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1707 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2025-03-03 16:13:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2658. [2025-03-03 16:13:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2656 states have (on average 1.5609939759036144) internal successors, (4146), 2657 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 4146 transitions. [2025-03-03 16:13:29,269 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 4146 transitions. Word has length 69 [2025-03-03 16:13:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:29,271 INFO L471 AbstractCegarLoop]: Abstraction has 2658 states and 4146 transitions. [2025-03-03 16:13:29,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 4146 transitions. [2025-03-03 16:13:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 16:13:29,272 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:29,272 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:29,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 16:13:29,272 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:29,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2127140790, now seen corresponding path program 1 times [2025-03-03 16:13:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:29,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559046341] [2025-03-03 16:13:29,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:29,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 16:13:29,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 16:13:29,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:29,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:29,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:29,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559046341] [2025-03-03 16:13:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559046341] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:29,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:29,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421343515] [2025-03-03 16:13:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:29,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:29,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:29,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,315 INFO L87 Difference]: Start difference. First operand 2658 states and 4146 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:29,342 INFO L93 Difference]: Finished difference Result 3338 states and 5184 transitions. [2025-03-03 16:13:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:29,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-03 16:13:29,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:29,350 INFO L225 Difference]: With dead ends: 3338 [2025-03-03 16:13:29,350 INFO L226 Difference]: Without dead ends: 2982 [2025-03-03 16:13:29,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,351 INFO L435 NwaCegarLoop]: 1620 mSDtfsCounter, 1505 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:29,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:29,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2025-03-03 16:13:29,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2980. [2025-03-03 16:13:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2978 states have (on average 1.5540631296171927) internal successors, (4628), 2979 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4628 transitions. [2025-03-03 16:13:29,391 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4628 transitions. Word has length 69 [2025-03-03 16:13:29,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:29,391 INFO L471 AbstractCegarLoop]: Abstraction has 2980 states and 4628 transitions. [2025-03-03 16:13:29,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4628 transitions. [2025-03-03 16:13:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 16:13:29,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:29,393 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:29,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 16:13:29,393 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:29,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:29,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1679195254, now seen corresponding path program 1 times [2025-03-03 16:13:29,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:29,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457539919] [2025-03-03 16:13:29,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:29,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:29,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 16:13:29,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 16:13:29,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:29,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:29,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:29,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457539919] [2025-03-03 16:13:29,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457539919] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:29,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:29,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:29,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748231118] [2025-03-03 16:13:29,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:29,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:29,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:29,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:29,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,434 INFO L87 Difference]: Start difference. First operand 2980 states and 4628 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:29,464 INFO L93 Difference]: Finished difference Result 4272 states and 6574 transitions. [2025-03-03 16:13:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:29,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-03 16:13:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:29,474 INFO L225 Difference]: With dead ends: 4272 [2025-03-03 16:13:29,474 INFO L226 Difference]: Without dead ends: 3594 [2025-03-03 16:13:29,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,476 INFO L435 NwaCegarLoop]: 1618 mSDtfsCounter, 1503 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:29,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1711 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:29,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2025-03-03 16:13:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3592. [2025-03-03 16:13:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3590 states have (on average 1.5398328690807799) internal successors, (5528), 3591 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 5528 transitions. [2025-03-03 16:13:29,536 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 5528 transitions. Word has length 69 [2025-03-03 16:13:29,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:29,536 INFO L471 AbstractCegarLoop]: Abstraction has 3592 states and 5528 transitions. [2025-03-03 16:13:29,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 5528 transitions. [2025-03-03 16:13:29,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 16:13:29,537 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:29,537 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:29,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 16:13:29,537 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:29,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2094371126, now seen corresponding path program 1 times [2025-03-03 16:13:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:29,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173562543] [2025-03-03 16:13:29,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:29,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:29,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 16:13:29,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 16:13:29,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:29,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:29,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:29,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173562543] [2025-03-03 16:13:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173562543] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:29,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:29,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725890331] [2025-03-03 16:13:29,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:29,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:29,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:29,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:29,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,580 INFO L87 Difference]: Start difference. First operand 3592 states and 5528 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:29,618 INFO L93 Difference]: Finished difference Result 6044 states and 9162 transitions. [2025-03-03 16:13:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:29,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-03 16:13:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:29,629 INFO L225 Difference]: With dead ends: 6044 [2025-03-03 16:13:29,630 INFO L226 Difference]: Without dead ends: 4754 [2025-03-03 16:13:29,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,632 INFO L435 NwaCegarLoop]: 1616 mSDtfsCounter, 1501 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:29,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1713 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:29,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2025-03-03 16:13:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 4752. [2025-03-03 16:13:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4750 states have (on average 1.5157894736842106) internal successors, (7200), 4751 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 7200 transitions. [2025-03-03 16:13:29,706 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 7200 transitions. Word has length 69 [2025-03-03 16:13:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:29,706 INFO L471 AbstractCegarLoop]: Abstraction has 4752 states and 7200 transitions. [2025-03-03 16:13:29,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 7200 transitions. [2025-03-03 16:13:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 16:13:29,707 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:29,707 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:29,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 16:13:29,707 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:29,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:29,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1607652854, now seen corresponding path program 1 times [2025-03-03 16:13:29,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:29,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373653283] [2025-03-03 16:13:29,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:29,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:29,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 16:13:29,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 16:13:29,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:29,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:29,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:29,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373653283] [2025-03-03 16:13:29,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373653283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:29,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:29,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:29,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280651822] [2025-03-03 16:13:29,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:29,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:29,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:29,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:29,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,750 INFO L87 Difference]: Start difference. First operand 4752 states and 7200 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:29,816 INFO L93 Difference]: Finished difference Result 9396 states and 13954 transitions. [2025-03-03 16:13:29,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:29,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-03 16:13:29,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:29,829 INFO L225 Difference]: With dead ends: 9396 [2025-03-03 16:13:29,829 INFO L226 Difference]: Without dead ends: 6946 [2025-03-03 16:13:29,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,835 INFO L435 NwaCegarLoop]: 1614 mSDtfsCounter, 1499 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:29,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1715 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2025-03-03 16:13:29,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6944. [2025-03-03 16:13:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6944 states, 6942 states have (on average 1.4819936617689426) internal successors, (10288), 6943 states have internal predecessors, (10288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 10288 transitions. [2025-03-03 16:13:29,947 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 10288 transitions. Word has length 69 [2025-03-03 16:13:29,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:29,947 INFO L471 AbstractCegarLoop]: Abstraction has 6944 states and 10288 transitions. [2025-03-03 16:13:29,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 10288 transitions. [2025-03-03 16:13:29,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 16:13:29,948 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:29,948 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:29,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 16:13:29,948 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:29,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1834425366, now seen corresponding path program 1 times [2025-03-03 16:13:29,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480208881] [2025-03-03 16:13:29,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:29,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:29,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-03 16:13:29,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 16:13:29,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:29,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:29,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:29,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480208881] [2025-03-03 16:13:29,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480208881] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:29,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:29,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:29,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493181498] [2025-03-03 16:13:29,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:29,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:29,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:29,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:29,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:29,989 INFO L87 Difference]: Start difference. First operand 6944 states and 10288 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:30,130 INFO L93 Difference]: Finished difference Result 11815 states and 17398 transitions. [2025-03-03 16:13:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:30,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2025-03-03 16:13:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:30,145 INFO L225 Difference]: With dead ends: 11815 [2025-03-03 16:13:30,145 INFO L226 Difference]: Without dead ends: 9188 [2025-03-03 16:13:30,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:30,151 INFO L435 NwaCegarLoop]: 1627 mSDtfsCounter, 1506 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:30,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2025-03-03 16:13:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 9186. [2025-03-03 16:13:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9184 states have (on average 1.4653745644599303) internal successors, (13458), 9185 states have internal predecessors, (13458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 13458 transitions. [2025-03-03 16:13:30,366 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 13458 transitions. Word has length 71 [2025-03-03 16:13:30,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:30,366 INFO L471 AbstractCegarLoop]: Abstraction has 9186 states and 13458 transitions. [2025-03-03 16:13:30,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 13458 transitions. [2025-03-03 16:13:30,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-03 16:13:30,369 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:30,369 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:30,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 16:13:30,370 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:30,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash -65687301, now seen corresponding path program 1 times [2025-03-03 16:13:30,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:30,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892376176] [2025-03-03 16:13:30,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:30,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:30,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-03 16:13:30,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-03 16:13:30,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:30,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-03 16:13:30,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892376176] [2025-03-03 16:13:30,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892376176] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:30,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:30,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 16:13:30,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422608784] [2025-03-03 16:13:30,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:30,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 16:13:30,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:30,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 16:13:30,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:13:30,519 INFO L87 Difference]: Start difference. First operand 9186 states and 13458 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 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) [2025-03-03 16:13:31,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:31,099 INFO L93 Difference]: Finished difference Result 51920 states and 74585 transitions. [2025-03-03 16:13:31,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 16:13:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 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) Word has length 90 [2025-03-03 16:13:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:31,172 INFO L225 Difference]: With dead ends: 51920 [2025-03-03 16:13:31,172 INFO L226 Difference]: Without dead ends: 45038 [2025-03-03 16:13:31,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-03-03 16:13:31,186 INFO L435 NwaCegarLoop]: 1645 mSDtfsCounter, 8052 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8052 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:31,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8052 Valid, 4044 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:13:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45038 states. [2025-03-03 16:13:31,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45038 to 16066. [2025-03-03 16:13:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16066 states, 16064 states have (on average 1.4453436254980079) internal successors, (23218), 16065 states have internal predecessors, (23218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16066 states to 16066 states and 23218 transitions. [2025-03-03 16:13:31,601 INFO L78 Accepts]: Start accepts. Automaton has 16066 states and 23218 transitions. Word has length 90 [2025-03-03 16:13:31,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:31,602 INFO L471 AbstractCegarLoop]: Abstraction has 16066 states and 23218 transitions. [2025-03-03 16:13:31,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 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) [2025-03-03 16:13:31,602 INFO L276 IsEmpty]: Start isEmpty. Operand 16066 states and 23218 transitions. [2025-03-03 16:13:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-03 16:13:31,604 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:31,604 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:31,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-03 16:13:31,605 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:31,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1044617797, now seen corresponding path program 1 times [2025-03-03 16:13:31,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:31,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529583921] [2025-03-03 16:13:31,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:31,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:31,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-03 16:13:31,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-03 16:13:31,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:31,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-03 16:13:31,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:31,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529583921] [2025-03-03 16:13:31,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529583921] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:31,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:31,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 16:13:31,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314315233] [2025-03-03 16:13:31,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:31,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 16:13:31,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:31,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 16:13:31,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:13:31,783 INFO L87 Difference]: Start difference. First operand 16066 states and 23218 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:32,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:32,464 INFO L93 Difference]: Finished difference Result 58800 states and 84345 transitions. [2025-03-03 16:13:32,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 16:13:32,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2025-03-03 16:13:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:32,530 INFO L225 Difference]: With dead ends: 58800 [2025-03-03 16:13:32,531 INFO L226 Difference]: Without dead ends: 51918 [2025-03-03 16:13:32,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-03-03 16:13:32,543 INFO L435 NwaCegarLoop]: 1642 mSDtfsCounter, 8073 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8073 SdHoareTripleChecker+Valid, 3964 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:32,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8073 Valid, 3964 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:13:32,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51918 states. [2025-03-03 16:13:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51918 to 26402. [2025-03-03 16:13:33,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26402 states, 26400 states have (on average 1.4309848484848484) internal successors, (37778), 26401 states have internal predecessors, (37778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26402 states to 26402 states and 37778 transitions. [2025-03-03 16:13:33,304 INFO L78 Accepts]: Start accepts. Automaton has 26402 states and 37778 transitions. Word has length 90 [2025-03-03 16:13:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:33,304 INFO L471 AbstractCegarLoop]: Abstraction has 26402 states and 37778 transitions. [2025-03-03 16:13:33,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:33,304 INFO L276 IsEmpty]: Start isEmpty. Operand 26402 states and 37778 transitions. [2025-03-03 16:13:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-03 16:13:33,308 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:33,308 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:33,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 16:13:33,308 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:33,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:33,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1492563333, now seen corresponding path program 1 times [2025-03-03 16:13:33,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:33,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175594854] [2025-03-03 16:13:33,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:33,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:33,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-03 16:13:33,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-03 16:13:33,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:33,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 16:13:33,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:33,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175594854] [2025-03-03 16:13:33,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175594854] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:33,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:33,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 16:13:33,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401850747] [2025-03-03 16:13:33,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:33,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 16:13:33,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:33,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 16:13:33,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:13:33,463 INFO L87 Difference]: Start difference. First operand 26402 states and 37778 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:34,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:34,558 INFO L93 Difference]: Finished difference Result 65680 states and 94105 transitions. [2025-03-03 16:13:34,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 16:13:34,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 90 [2025-03-03 16:13:34,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:34,626 INFO L225 Difference]: With dead ends: 65680 [2025-03-03 16:13:34,627 INFO L226 Difference]: Without dead ends: 58798 [2025-03-03 16:13:34,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-03-03 16:13:34,640 INFO L435 NwaCegarLoop]: 1639 mSDtfsCounter, 8114 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8114 SdHoareTripleChecker+Valid, 3916 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:34,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8114 Valid, 3916 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:13:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58798 states. [2025-03-03 16:13:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58798 to 33282. [2025-03-03 16:13:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33282 states, 33280 states have (on average 1.4284254807692307) internal successors, (47538), 33281 states have internal predecessors, (47538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33282 states to 33282 states and 47538 transitions. [2025-03-03 16:13:35,345 INFO L78 Accepts]: Start accepts. Automaton has 33282 states and 47538 transitions. Word has length 90 [2025-03-03 16:13:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:35,345 INFO L471 AbstractCegarLoop]: Abstraction has 33282 states and 47538 transitions. [2025-03-03 16:13:35,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 33282 states and 47538 transitions. [2025-03-03 16:13:35,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-03 16:13:35,348 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:35,349 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:35,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 16:13:35,349 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:35,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:35,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1077387461, now seen corresponding path program 1 times [2025-03-03 16:13:35,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:35,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016232686] [2025-03-03 16:13:35,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:35,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:35,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-03 16:13:35,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-03 16:13:35,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:35,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 16:13:35,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:35,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016232686] [2025-03-03 16:13:35,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016232686] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:35,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:35,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 16:13:35,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503458192] [2025-03-03 16:13:35,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:35,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 16:13:35,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:35,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 16:13:35,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:13:35,467 INFO L87 Difference]: Start difference. First operand 33282 states and 47538 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:36,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:36,472 INFO L93 Difference]: Finished difference Result 72560 states and 103865 transitions. [2025-03-03 16:13:36,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 16:13:36,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 90 [2025-03-03 16:13:36,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:36,629 INFO L225 Difference]: With dead ends: 72560 [2025-03-03 16:13:36,629 INFO L226 Difference]: Without dead ends: 65678 [2025-03-03 16:13:36,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-03-03 16:13:36,641 INFO L435 NwaCegarLoop]: 1636 mSDtfsCounter, 8164 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8164 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:36,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8164 Valid, 3917 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:13:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65678 states. [2025-03-03 16:13:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65678 to 40162. [2025-03-03 16:13:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40162 states, 40160 states have (on average 1.4267430278884463) internal successors, (57298), 40161 states have internal predecessors, (57298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40162 states to 40162 states and 57298 transitions. [2025-03-03 16:13:37,443 INFO L78 Accepts]: Start accepts. Automaton has 40162 states and 57298 transitions. Word has length 90 [2025-03-03 16:13:37,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:37,444 INFO L471 AbstractCegarLoop]: Abstraction has 40162 states and 57298 transitions. [2025-03-03 16:13:37,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 40162 states and 57298 transitions. [2025-03-03 16:13:37,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-03 16:13:37,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:37,447 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:37,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 16:13:37,447 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:37,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:37,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1564105733, now seen corresponding path program 1 times [2025-03-03 16:13:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:37,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322717057] [2025-03-03 16:13:37,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:37,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:37,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-03 16:13:37,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-03 16:13:37,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:37,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 16:13:37,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:37,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322717057] [2025-03-03 16:13:37,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322717057] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:37,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:37,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 16:13:37,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656919992] [2025-03-03 16:13:37,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:37,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 16:13:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:37,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 16:13:37,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:13:37,650 INFO L87 Difference]: Start difference. First operand 40162 states and 57298 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:39,383 INFO L93 Difference]: Finished difference Result 79440 states and 113625 transitions. [2025-03-03 16:13:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 16:13:39,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 90 [2025-03-03 16:13:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:39,499 INFO L225 Difference]: With dead ends: 79440 [2025-03-03 16:13:39,499 INFO L226 Difference]: Without dead ends: 72558 [2025-03-03 16:13:39,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-03-03 16:13:39,531 INFO L435 NwaCegarLoop]: 1642 mSDtfsCounter, 8068 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8068 SdHoareTripleChecker+Valid, 4011 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:39,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8068 Valid, 4011 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:13:39,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72558 states. [2025-03-03 16:13:40,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72558 to 47042. [2025-03-03 16:13:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47042 states, 47040 states have (on average 1.4255527210884353) internal successors, (67058), 47041 states have internal predecessors, (67058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47042 states to 47042 states and 67058 transitions. [2025-03-03 16:13:40,795 INFO L78 Accepts]: Start accepts. Automaton has 47042 states and 67058 transitions. Word has length 90 [2025-03-03 16:13:40,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:40,795 INFO L471 AbstractCegarLoop]: Abstraction has 47042 states and 67058 transitions. [2025-03-03 16:13:40,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:40,795 INFO L276 IsEmpty]: Start isEmpty. Operand 47042 states and 67058 transitions. [2025-03-03 16:13:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-03 16:13:40,799 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:40,799 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:40,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 16:13:40,799 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:40,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:40,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1843277639, now seen corresponding path program 1 times [2025-03-03 16:13:40,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:40,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324823104] [2025-03-03 16:13:40,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:40,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:40,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-03 16:13:40,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-03 16:13:40,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:40,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:40,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:40,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324823104] [2025-03-03 16:13:40,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324823104] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:40,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:40,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:40,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334665917] [2025-03-03 16:13:40,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:40,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:40,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:40,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:40,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:40,860 INFO L87 Difference]: Start difference. First operand 47042 states and 67058 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:41,357 INFO L93 Difference]: Finished difference Result 78684 states and 112427 transitions. [2025-03-03 16:13:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2025-03-03 16:13:41,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:41,402 INFO L225 Difference]: With dead ends: 78684 [2025-03-03 16:13:41,402 INFO L226 Difference]: Without dead ends: 33946 [2025-03-03 16:13:41,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:41,434 INFO L435 NwaCegarLoop]: 1613 mSDtfsCounter, 58 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:41,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3163 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33946 states. [2025-03-03 16:13:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33946 to 33944. [2025-03-03 16:13:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33944 states, 33942 states have (on average 1.4304401626303695) internal successors, (48552), 33943 states have internal predecessors, (48552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33944 states to 33944 states and 48552 transitions. [2025-03-03 16:13:42,162 INFO L78 Accepts]: Start accepts. Automaton has 33944 states and 48552 transitions. Word has length 92 [2025-03-03 16:13:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:42,163 INFO L471 AbstractCegarLoop]: Abstraction has 33944 states and 48552 transitions. [2025-03-03 16:13:42,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 33944 states and 48552 transitions. [2025-03-03 16:13:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-03 16:13:42,165 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:42,165 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:42,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 16:13:42,165 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:42,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1093763877, now seen corresponding path program 1 times [2025-03-03 16:13:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:42,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369307287] [2025-03-03 16:13:42,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:42,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:42,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-03 16:13:42,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-03 16:13:42,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:42,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 16:13:42,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:42,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369307287] [2025-03-03 16:13:42,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369307287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:42,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:42,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 16:13:42,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962115451] [2025-03-03 16:13:42,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:42,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 16:13:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:42,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 16:13:42,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:13:42,301 INFO L87 Difference]: Start difference. First operand 33944 states and 48552 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:43,332 INFO L93 Difference]: Finished difference Result 63142 states and 90415 transitions. [2025-03-03 16:13:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 16:13:43,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2025-03-03 16:13:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:43,406 INFO L225 Difference]: With dead ends: 63142 [2025-03-03 16:13:43,406 INFO L226 Difference]: Without dead ends: 58276 [2025-03-03 16:13:43,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-03-03 16:13:43,416 INFO L435 NwaCegarLoop]: 1634 mSDtfsCounter, 8056 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8056 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:43,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8056 Valid, 4214 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:13:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58276 states. [2025-03-03 16:13:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58276 to 38808. [2025-03-03 16:13:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38808 states, 38806 states have (on average 1.4292635159511415) internal successors, (55464), 38807 states have internal predecessors, (55464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38808 states to 38808 states and 55464 transitions. [2025-03-03 16:13:44,208 INFO L78 Accepts]: Start accepts. Automaton has 38808 states and 55464 transitions. Word has length 92 [2025-03-03 16:13:44,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:44,208 INFO L471 AbstractCegarLoop]: Abstraction has 38808 states and 55464 transitions. [2025-03-03 16:13:44,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:44,208 INFO L276 IsEmpty]: Start isEmpty. Operand 38808 states and 55464 transitions. [2025-03-03 16:13:44,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-03 16:13:44,210 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:44,210 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:44,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-03 16:13:44,210 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:44,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:44,211 INFO L85 PathProgramCache]: Analyzing trace with hash 543737427, now seen corresponding path program 1 times [2025-03-03 16:13:44,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:44,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629272595] [2025-03-03 16:13:44,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:44,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:44,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-03 16:13:44,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-03 16:13:44,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:44,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:44,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:44,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629272595] [2025-03-03 16:13:44,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629272595] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:44,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:44,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406067937] [2025-03-03 16:13:44,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:44,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:44,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:44,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:44,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:44,275 INFO L87 Difference]: Start difference. First operand 38808 states and 55464 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:44,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:44,745 INFO L93 Difference]: Finished difference Result 57052 states and 81386 transitions. [2025-03-03 16:13:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:44,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-03-03 16:13:44,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:44,766 INFO L225 Difference]: With dead ends: 57052 [2025-03-03 16:13:44,766 INFO L226 Difference]: Without dead ends: 20570 [2025-03-03 16:13:44,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:44,779 INFO L435 NwaCegarLoop]: 1606 mSDtfsCounter, 53 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:44,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3148 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20570 states. [2025-03-03 16:13:45,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20570 to 20568. [2025-03-03 16:13:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20568 states, 20566 states have (on average 1.4248760089468053) internal successors, (29304), 20567 states have internal predecessors, (29304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20568 states to 20568 states and 29304 transitions. [2025-03-03 16:13:45,383 INFO L78 Accepts]: Start accepts. Automaton has 20568 states and 29304 transitions. Word has length 93 [2025-03-03 16:13:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:45,383 INFO L471 AbstractCegarLoop]: Abstraction has 20568 states and 29304 transitions. [2025-03-03 16:13:45,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:45,383 INFO L276 IsEmpty]: Start isEmpty. Operand 20568 states and 29304 transitions. [2025-03-03 16:13:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-03 16:13:45,386 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:45,386 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:45,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-03 16:13:45,386 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:45,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:45,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1280111130, now seen corresponding path program 1 times [2025-03-03 16:13:45,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:45,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810424638] [2025-03-03 16:13:45,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:45,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:45,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-03 16:13:45,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 16:13:45,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:45,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:45,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:45,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810424638] [2025-03-03 16:13:45,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810424638] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:45,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:45,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313293427] [2025-03-03 16:13:45,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:45,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:45,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:45,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:45,469 INFO L87 Difference]: Start difference. First operand 20568 states and 29304 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:45,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:45,724 INFO L93 Difference]: Finished difference Result 29692 states and 42146 transitions. [2025-03-03 16:13:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:45,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2025-03-03 16:13:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:45,738 INFO L225 Difference]: With dead ends: 29692 [2025-03-03 16:13:45,738 INFO L226 Difference]: Without dead ends: 11450 [2025-03-03 16:13:45,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:45,751 INFO L435 NwaCegarLoop]: 1599 mSDtfsCounter, 50 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:45,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3133 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:45,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11450 states. [2025-03-03 16:13:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11450 to 11448. [2025-03-03 16:13:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11448 states, 11446 states have (on average 1.427922418312074) internal successors, (16344), 11447 states have internal predecessors, (16344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11448 states to 11448 states and 16344 transitions. [2025-03-03 16:13:46,058 INFO L78 Accepts]: Start accepts. Automaton has 11448 states and 16344 transitions. Word has length 95 [2025-03-03 16:13:46,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:46,058 INFO L471 AbstractCegarLoop]: Abstraction has 11448 states and 16344 transitions. [2025-03-03 16:13:46,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 11448 states and 16344 transitions. [2025-03-03 16:13:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 16:13:46,060 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:46,060 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:46,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-03 16:13:46,060 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:46,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2035285761, now seen corresponding path program 1 times [2025-03-03 16:13:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:46,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189423599] [2025-03-03 16:13:46,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:46,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:46,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 16:13:46,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 16:13:46,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:46,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:46,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:46,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189423599] [2025-03-03 16:13:46,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189423599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:46,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:46,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189022032] [2025-03-03 16:13:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:46,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:46,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:46,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:46,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:46,136 INFO L87 Difference]: Start difference. First operand 11448 states and 16344 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:46,277 INFO L93 Difference]: Finished difference Result 16012 states and 22706 transitions. [2025-03-03 16:13:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:46,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2025-03-03 16:13:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:46,286 INFO L225 Difference]: With dead ends: 16012 [2025-03-03 16:13:46,287 INFO L226 Difference]: Without dead ends: 6890 [2025-03-03 16:13:46,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:46,294 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 47 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:46,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3118 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6890 states. [2025-03-03 16:13:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6890 to 6888. [2025-03-03 16:13:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6886 states have (on average 1.441185013069997) internal successors, (9924), 6887 states have internal predecessors, (9924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 9924 transitions. [2025-03-03 16:13:46,468 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 9924 transitions. Word has length 97 [2025-03-03 16:13:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:46,468 INFO L471 AbstractCegarLoop]: Abstraction has 6888 states and 9924 transitions. [2025-03-03 16:13:46,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 9924 transitions. [2025-03-03 16:13:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-03 16:13:46,469 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:46,470 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:46,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-03 16:13:46,470 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:46,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:46,470 INFO L85 PathProgramCache]: Analyzing trace with hash 238968072, now seen corresponding path program 1 times [2025-03-03 16:13:46,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:46,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990158379] [2025-03-03 16:13:46,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:46,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:46,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-03 16:13:46,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 16:13:46,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:46,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:46,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:46,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990158379] [2025-03-03 16:13:46,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990158379] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:46,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:46,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:46,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329322201] [2025-03-03 16:13:46,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:46,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:46,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:46,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:46,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:46,543 INFO L87 Difference]: Start difference. First operand 6888 states and 9924 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:46,624 INFO L93 Difference]: Finished difference Result 9172 states and 13076 transitions. [2025-03-03 16:13:46,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:46,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2025-03-03 16:13:46,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:46,675 INFO L225 Difference]: With dead ends: 9172 [2025-03-03 16:13:46,675 INFO L226 Difference]: Without dead ends: 4610 [2025-03-03 16:13:46,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:46,677 INFO L435 NwaCegarLoop]: 1585 mSDtfsCounter, 44 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:46,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3103 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2025-03-03 16:13:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4608. [2025-03-03 16:13:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 4606 states have (on average 1.4641771602257925) internal successors, (6744), 4607 states have internal predecessors, (6744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 6744 transitions. [2025-03-03 16:13:46,735 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 6744 transitions. Word has length 99 [2025-03-03 16:13:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:46,736 INFO L471 AbstractCegarLoop]: Abstraction has 4608 states and 6744 transitions. [2025-03-03 16:13:46,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 6744 transitions. [2025-03-03 16:13:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-03 16:13:46,736 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:46,736 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:46,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-03 16:13:46,737 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:46,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:46,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1556710353, now seen corresponding path program 1 times [2025-03-03 16:13:46,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:46,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423705074] [2025-03-03 16:13:46,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:46,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:46,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-03 16:13:46,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-03 16:13:46,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:46,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:46,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423705074] [2025-03-03 16:13:46,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423705074] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:13:46,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:13:46,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 16:13:46,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214963792] [2025-03-03 16:13:46,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:13:46,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 16:13:46,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:46,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 16:13:46,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:46,787 INFO L87 Difference]: Start difference. First operand 4608 states and 6744 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:46,820 INFO L93 Difference]: Finished difference Result 5752 states and 8306 transitions. [2025-03-03 16:13:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 16:13:46,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2025-03-03 16:13:46,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:46,824 INFO L225 Difference]: With dead ends: 5752 [2025-03-03 16:13:46,824 INFO L226 Difference]: Without dead ends: 3470 [2025-03-03 16:13:46,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 16:13:46,825 INFO L435 NwaCegarLoop]: 1578 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:46,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3088 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:13:46,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2025-03-03 16:13:46,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 3468. [2025-03-03 16:13:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3466 states have (on average 1.4913444893248702) internal successors, (5169), 3467 states have internal predecessors, (5169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 5169 transitions. [2025-03-03 16:13:46,866 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 5169 transitions. Word has length 101 [2025-03-03 16:13:46,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:46,867 INFO L471 AbstractCegarLoop]: Abstraction has 3468 states and 5169 transitions. [2025-03-03 16:13:46,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 5169 transitions. [2025-03-03 16:13:46,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-03 16:13:46,868 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:46,868 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:46,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-03 16:13:46,868 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:46,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:46,868 INFO L85 PathProgramCache]: Analyzing trace with hash -928461706, now seen corresponding path program 1 times [2025-03-03 16:13:46,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:46,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979007097] [2025-03-03 16:13:46,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:46,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:46,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-03 16:13:46,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-03 16:13:46,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:46,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979007097] [2025-03-03 16:13:47,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979007097] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:13:47,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91415176] [2025-03-03 16:13:47,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:47,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:13:47,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:13:47,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 16:13:47,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 16:13:47,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-03 16:13:47,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-03 16:13:47,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:47,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:47,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-03 16:13:47,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:13:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:48,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 16:13:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:48,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91415176] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 16:13:48,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 16:13:48,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2025-03-03 16:13:48,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635651620] [2025-03-03 16:13:48,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 16:13:48,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-03 16:13:48,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:48,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-03 16:13:48,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2025-03-03 16:13:48,440 INFO L87 Difference]: Start difference. First operand 3468 states and 5169 transitions. Second operand has 22 states, 22 states have (on average 13.454545454545455) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:52,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:52,708 INFO L93 Difference]: Finished difference Result 13378 states and 18283 transitions. [2025-03-03 16:13:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-03-03 16:13:52,713 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.454545454545455) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 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 103 [2025-03-03 16:13:52,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:52,725 INFO L225 Difference]: With dead ends: 13378 [2025-03-03 16:13:52,726 INFO L226 Difference]: Without dead ends: 12138 [2025-03-03 16:13:52,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4035 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1793, Invalid=9549, Unknown=0, NotChecked=0, Total=11342 [2025-03-03 16:13:52,731 INFO L435 NwaCegarLoop]: 1567 mSDtfsCounter, 23440 mSDsluCounter, 8490 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23440 SdHoareTripleChecker+Valid, 10057 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:52,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23440 Valid, 10057 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-03 16:13:52,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12138 states. [2025-03-03 16:13:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12138 to 11292. [2025-03-03 16:13:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11292 states, 11290 states have (on average 1.3614703277236493) internal successors, (15371), 11291 states have internal predecessors, (15371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:52,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11292 states to 11292 states and 15371 transitions. [2025-03-03 16:13:52,979 INFO L78 Accepts]: Start accepts. Automaton has 11292 states and 15371 transitions. Word has length 103 [2025-03-03 16:13:52,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:13:52,979 INFO L471 AbstractCegarLoop]: Abstraction has 11292 states and 15371 transitions. [2025-03-03 16:13:52,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.454545454545455) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:52,979 INFO L276 IsEmpty]: Start isEmpty. Operand 11292 states and 15371 transitions. [2025-03-03 16:13:52,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-03 16:13:52,980 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:13:52,980 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:13:52,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 16:13:53,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-03 16:13:53,181 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:13:53,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:13:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1152799269, now seen corresponding path program 1 times [2025-03-03 16:13:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:13:53,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574415801] [2025-03-03 16:13:53,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:53,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:13:53,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-03 16:13:53,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-03 16:13:53,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:53,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:53,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:13:53,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574415801] [2025-03-03 16:13:53,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574415801] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:13:53,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529513405] [2025-03-03 16:13:53,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:13:53,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:13:53,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:13:53,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 16:13:53,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 16:13:53,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-03 16:13:53,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-03 16:13:53,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:13:53,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:13:53,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-03 16:13:53,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:13:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:54,169 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 16:13:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:13:55,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529513405] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 16:13:55,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 16:13:55,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2025-03-03 16:13:55,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300536557] [2025-03-03 16:13:55,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 16:13:55,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-03 16:13:55,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:13:55,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-03 16:13:55,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2025-03-03 16:13:55,014 INFO L87 Difference]: Start difference. First operand 11292 states and 15371 transitions. Second operand has 32 states, 32 states have (on average 8.75) internal successors, (280), 32 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:13:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:13:59,114 INFO L93 Difference]: Finished difference Result 67888 states and 89098 transitions. [2025-03-03 16:13:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2025-03-03 16:13:59,114 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.75) internal successors, (280), 32 states have internal predecessors, (280), 0 states have call successors, (0), 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 104 [2025-03-03 16:13:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:13:59,165 INFO L225 Difference]: With dead ends: 67888 [2025-03-03 16:13:59,165 INFO L226 Difference]: Without dead ends: 59036 [2025-03-03 16:13:59,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2268 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1374, Invalid=6998, Unknown=0, NotChecked=0, Total=8372 [2025-03-03 16:13:59,176 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 12960 mSDsluCounter, 17526 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12960 SdHoareTripleChecker+Valid, 19048 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-03 16:13:59,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12960 Valid, 19048 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-03 16:13:59,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59036 states. [2025-03-03 16:14:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59036 to 37004. [2025-03-03 16:14:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37004 states, 37002 states have (on average 1.2943894924598671) internal successors, (47895), 37003 states have internal predecessors, (47895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:14:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37004 states to 37004 states and 47895 transitions. [2025-03-03 16:14:00,456 INFO L78 Accepts]: Start accepts. Automaton has 37004 states and 47895 transitions. Word has length 104 [2025-03-03 16:14:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:14:00,456 INFO L471 AbstractCegarLoop]: Abstraction has 37004 states and 47895 transitions. [2025-03-03 16:14:00,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.75) internal successors, (280), 32 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:14:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 37004 states and 47895 transitions. [2025-03-03 16:14:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-03 16:14:00,458 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:14:00,459 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:14:00,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 16:14:00,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-03 16:14:00,659 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:14:00,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:14:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash 835425124, now seen corresponding path program 1 times [2025-03-03 16:14:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:14:00,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950997891] [2025-03-03 16:14:00,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:14:00,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:14:00,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-03 16:14:00,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-03 16:14:00,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:14:00,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:14:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:14:00,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:14:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950997891] [2025-03-03 16:14:00,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950997891] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:14:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975430307] [2025-03-03 16:14:00,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:14:00,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:14:00,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:14:01,000 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 16:14:01,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 16:14:01,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-03 16:14:01,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-03 16:14:01,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:14:01,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:14:01,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 16:14:01,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:14:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:14:01,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 16:14:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:14:02,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975430307] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 16:14:02,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 16:14:02,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-03 16:14:02,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368512518] [2025-03-03 16:14:02,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 16:14:02,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-03 16:14:02,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:14:02,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-03 16:14:02,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-03-03 16:14:02,423 INFO L87 Difference]: Start difference. First operand 37004 states and 47895 transitions. Second operand has 25 states, 25 states have (on average 11.48) internal successors, (287), 24 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:14:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:14:05,384 INFO L93 Difference]: Finished difference Result 109614 states and 141004 transitions. [2025-03-03 16:14:05,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-03 16:14:05,385 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.48) internal successors, (287), 24 states have internal predecessors, (287), 0 states have call successors, (0), 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 105 [2025-03-03 16:14:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:14:05,462 INFO L225 Difference]: With dead ends: 109614 [2025-03-03 16:14:05,462 INFO L226 Difference]: Without dead ends: 75096 [2025-03-03 16:14:05,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=632, Invalid=2448, Unknown=0, NotChecked=0, Total=3080 [2025-03-03 16:14:05,480 INFO L435 NwaCegarLoop]: 1539 mSDtfsCounter, 18743 mSDsluCounter, 6860 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18743 SdHoareTripleChecker+Valid, 8399 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 16:14:05,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18743 Valid, 8399 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 16:14:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75096 states. [2025-03-03 16:14:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75096 to 69494. [2025-03-03 16:14:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69494 states, 69492 states have (on average 1.27217521441317) internal successors, (88406), 69493 states have internal predecessors, (88406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:14:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69494 states to 69494 states and 88406 transitions. [2025-03-03 16:14:08,444 INFO L78 Accepts]: Start accepts. Automaton has 69494 states and 88406 transitions. Word has length 105 [2025-03-03 16:14:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:14:08,444 INFO L471 AbstractCegarLoop]: Abstraction has 69494 states and 88406 transitions. [2025-03-03 16:14:08,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.48) internal successors, (287), 24 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:14:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 69494 states and 88406 transitions. [2025-03-03 16:14:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-03 16:14:08,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:14:08,447 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:14:08,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 16:14:08,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:14:08,647 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:14:08,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:14:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1948722624, now seen corresponding path program 1 times [2025-03-03 16:14:08,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:14:08,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79717210] [2025-03-03 16:14:08,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:14:08,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:14:08,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-03 16:14:08,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-03 16:14:08,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:14:08,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:14:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:14:09,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:14:09,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79717210] [2025-03-03 16:14:09,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79717210] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:14:09,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974440831] [2025-03-03 16:14:09,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:14:09,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:14:09,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:14:09,286 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 16:14:09,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 16:14:09,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-03 16:14:09,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-03 16:14:09,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:14:09,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:14:09,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 16:14:09,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:14:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:14:09,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 16:14:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:14:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974440831] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 16:14:10,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 16:14:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2025-03-03 16:14:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150662822] [2025-03-03 16:14:10,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 16:14:10,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-03 16:14:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:14:10,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-03 16:14:10,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2025-03-03 16:14:10,399 INFO L87 Difference]: Start difference. First operand 69494 states and 88406 transitions. Second operand has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 27 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:14:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:14:19,179 INFO L93 Difference]: Finished difference Result 351430 states and 444330 transitions. [2025-03-03 16:14:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-03 16:14:19,180 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 27 states have internal predecessors, (264), 0 states have call successors, (0), 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 106 [2025-03-03 16:14:19,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:14:19,559 INFO L225 Difference]: With dead ends: 351430 [2025-03-03 16:14:19,559 INFO L226 Difference]: Without dead ends: 286222 [2025-03-03 16:14:19,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=627, Invalid=2453, Unknown=0, NotChecked=0, Total=3080 [2025-03-03 16:14:19,634 INFO L435 NwaCegarLoop]: 1552 mSDtfsCounter, 17745 mSDsluCounter, 5389 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17745 SdHoareTripleChecker+Valid, 6941 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 16:14:19,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17745 Valid, 6941 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 16:14:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286222 states. [2025-03-03 16:14:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286222 to 284658. [2025-03-03 16:14:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284658 states, 284656 states have (on average 1.2564182732842448) internal successors, (357647), 284657 states have internal predecessors, (357647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:14:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284658 states to 284658 states and 357647 transitions. [2025-03-03 16:14:29,966 INFO L78 Accepts]: Start accepts. Automaton has 284658 states and 357647 transitions. Word has length 106 [2025-03-03 16:14:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:14:29,967 INFO L471 AbstractCegarLoop]: Abstraction has 284658 states and 357647 transitions. [2025-03-03 16:14:29,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 27 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:14:29,967 INFO L276 IsEmpty]: Start isEmpty. Operand 284658 states and 357647 transitions. [2025-03-03 16:14:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-03 16:14:29,971 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:14:29,971 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:14:29,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 16:14:30,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-03 16:14:30,172 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:14:30,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:14:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1490084202, now seen corresponding path program 1 times [2025-03-03 16:14:30,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:14:30,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780275069] [2025-03-03 16:14:30,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:14:30,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:14:30,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-03 16:14:30,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-03 16:14:30,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:14:30,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:14:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:14:30,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:14:30,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780275069] [2025-03-03 16:14:30,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780275069] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 16:14:30,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286085310] [2025-03-03 16:14:30,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:14:30,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:14:30,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:14:30,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 16:14:30,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 16:14:30,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-03 16:14:30,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-03 16:14:30,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:14:30,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:14:30,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-03 16:14:30,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:14:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:14:30,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 16:14:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:14:31,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286085310] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 16:14:31,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 16:14:31,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-03-03 16:14:31,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894970328] [2025-03-03 16:14:31,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 16:14:31,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-03 16:14:31,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:14:31,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-03 16:14:31,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2025-03-03 16:14:31,817 INFO L87 Difference]: Start difference. First operand 284658 states and 357647 transitions. Second operand has 21 states, 21 states have (on average 11.428571428571429) internal successors, (240), 20 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)