./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i -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 21bdbc3e0ac2e83aebdf4ed5d685b5451eeeab46fc8ce4a523557df5ff3c8a1c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 00:06:41,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 00:06:41,767 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 00:06:41,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 00:06:41,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 00:06:41,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 00:06:41,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 00:06:41,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 00:06:41,795 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 00:06:41,796 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 00:06:41,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 00:06:41,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 00:06:41,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 00:06:41,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 00:06:41,797 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 00:06:41,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 00:06:41,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 00:06:41,798 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 00:06:41,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 00:06:41,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 00:06:41,798 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 00:06:41,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 00:06:41,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 00:06:41,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 00:06:41,798 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 00:06:41,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 00:06:41,799 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 00:06:41,799 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 00:06:41,799 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 00:06:41,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 00:06:41,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:06:41,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 00:06:41,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 00:06:41,800 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 -> 21bdbc3e0ac2e83aebdf4ed5d685b5451eeeab46fc8ce4a523557df5ff3c8a1c [2025-03-17 00:06:42,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 00:06:42,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 00:06:42,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 00:06:42,074 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 00:06:42,075 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 00:06:42,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2025-03-17 00:06:43,260 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bf1eb54/77b3fda6a6e348b09bce590392b5f2fb/FLAG1c2150122 [2025-03-17 00:06:43,540 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 00:06:43,540 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2025-03-17 00:06:43,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bf1eb54/77b3fda6a6e348b09bce590392b5f2fb/FLAG1c2150122 [2025-03-17 00:06:43,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bf1eb54/77b3fda6a6e348b09bce590392b5f2fb [2025-03-17 00:06:43,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 00:06:43,580 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 00:06:43,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 00:06:43,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 00:06:43,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 00:06:43,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:43,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16361fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43, skipping insertion in model container [2025-03-17 00:06:43,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:43,619 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 00:06:43,732 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i[915,928] [2025-03-17 00:06:43,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:06:43,865 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 00:06:43,874 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i[915,928] [2025-03-17 00:06:43,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:06:43,956 INFO L204 MainTranslator]: Completed translation [2025-03-17 00:06:43,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43 WrapperNode [2025-03-17 00:06:43,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 00:06:43,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 00:06:43,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 00:06:43,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 00:06:43,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:43,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,030 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 490 [2025-03-17 00:06:44,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 00:06:44,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 00:06:44,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 00:06:44,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 00:06:44,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,047 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,082 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]. [2025-03-17 00:06:44,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,104 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 00:06:44,136 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 00:06:44,137 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 00:06:44,137 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 00:06:44,138 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (1/1) ... [2025-03-17 00:06:44,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:06:44,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:06:44,165 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) [2025-03-17 00:06:44,168 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 [2025-03-17 00:06:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 00:06:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 00:06:44,189 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 00:06:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 00:06:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 00:06:44,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 00:06:44,274 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 00:06:44,276 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 00:06:44,965 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-03-17 00:06:44,965 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 00:06:44,983 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 00:06:44,983 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-17 00:06:44,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:06:44 BoogieIcfgContainer [2025-03-17 00:06:44,984 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 00:06:44,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 00:06:44,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 00:06:44,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 00:06:44,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 12:06:43" (1/3) ... [2025-03-17 00:06:44,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c6091e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:06:44, skipping insertion in model container [2025-03-17 00:06:44,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:06:43" (2/3) ... [2025-03-17 00:06:44,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c6091e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:06:44, skipping insertion in model container [2025-03-17 00:06:44,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:06:44" (3/3) ... [2025-03-17 00:06:44,991 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2025-03-17 00:06:45,002 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 00:06:45,006 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-5.i that has 2 procedures, 201 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 00:06:45,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 00:06:45,086 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;@73c25716, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 00:06:45,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 00:06:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 131 states have (on average 1.5419847328244274) internal successors, (202), 132 states have internal predecessors, (202), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2025-03-17 00:06:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2025-03-17 00:06:45,113 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:06:45,114 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:06:45,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:06:45,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:06:45,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2108070822, now seen corresponding path program 1 times [2025-03-17 00:06:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:06:45,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599442431] [2025-03-17 00:06:45,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:45,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:06:45,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 427 statements into 1 equivalence classes. [2025-03-17 00:06:45,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 427 of 427 statements. [2025-03-17 00:06:45,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:45,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2025-03-17 00:06:45,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:06:45,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599442431] [2025-03-17 00:06:45,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599442431] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:06:45,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010523054] [2025-03-17 00:06:45,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:45,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:06:45,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:06:45,623 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) [2025-03-17 00:06:45,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 00:06:45,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 427 statements into 1 equivalence classes. [2025-03-17 00:06:45,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 427 of 427 statements. [2025-03-17 00:06:45,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:45,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:45,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 00:06:45,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:06:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2025-03-17 00:06:45,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 00:06:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010523054] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:06:45,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 00:06:45,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 00:06:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466226230] [2025-03-17 00:06:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:06:45,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 00:06:45,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:06:45,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 00:06:45,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:06:45,967 INFO L87 Difference]: Start difference. First operand has 201 states, 131 states have (on average 1.5419847328244274) internal successors, (202), 132 states have internal predecessors, (202), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-17 00:06:46,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:06:46,021 INFO L93 Difference]: Finished difference Result 399 states and 737 transitions. [2025-03-17 00:06:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 00:06:46,025 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 427 [2025-03-17 00:06:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:06:46,034 INFO L225 Difference]: With dead ends: 399 [2025-03-17 00:06:46,034 INFO L226 Difference]: Without dead ends: 199 [2025-03-17 00:06:46,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:06:46,041 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:06:46,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 322 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:06:46,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-03-17 00:06:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2025-03-17 00:06:46,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 130 states have (on average 1.5076923076923077) internal successors, (196), 130 states have internal predecessors, (196), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2025-03-17 00:06:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 330 transitions. [2025-03-17 00:06:46,101 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 330 transitions. Word has length 427 [2025-03-17 00:06:46,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:06:46,101 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 330 transitions. [2025-03-17 00:06:46,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-17 00:06:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 330 transitions. [2025-03-17 00:06:46,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2025-03-17 00:06:46,107 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:06:46,107 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:06:46,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 00:06:46,308 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,SelfDestructingSolverStorable0 [2025-03-17 00:06:46,309 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:06:46,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:06:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1809931068, now seen corresponding path program 1 times [2025-03-17 00:06:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:06:46,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328371105] [2025-03-17 00:06:46,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:06:46,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:06:46,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 427 statements into 1 equivalence classes. [2025-03-17 00:06:46,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 427 of 427 statements. [2025-03-17 00:06:46,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:06:46,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:06:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-03-17 00:06:54,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:06:54,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328371105] [2025-03-17 00:06:54,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328371105] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:06:54,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:06:54,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 00:06:54,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038141121] [2025-03-17 00:06:54,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:06:54,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 00:06:54,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:06:54,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 00:06:54,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2025-03-17 00:06:54,544 INFO L87 Difference]: Start difference. First operand 199 states and 330 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-17 00:07:07,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:07:07,170 INFO L93 Difference]: Finished difference Result 1889 states and 3085 transitions. [2025-03-17 00:07:07,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 00:07:07,171 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 427 [2025-03-17 00:07:07,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:07:07,188 INFO L225 Difference]: With dead ends: 1889 [2025-03-17 00:07:07,189 INFO L226 Difference]: Without dead ends: 1691 [2025-03-17 00:07:07,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=557, Invalid=1423, Unknown=0, NotChecked=0, Total=1980 [2025-03-17 00:07:07,194 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 5266 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 3648 mSolverCounterSat, 2171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5266 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 5819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2171 IncrementalHoareTripleChecker+Valid, 3648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:07:07,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5266 Valid, 3218 Invalid, 5819 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2171 Valid, 3648 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2025-03-17 00:07:07,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2025-03-17 00:07:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1323. [2025-03-17 00:07:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 933 states have (on average 1.5316184351554127) internal successors, (1429), 943 states have internal predecessors, (1429), 374 states have call successors, (374), 15 states have call predecessors, (374), 15 states have return successors, (374), 364 states have call predecessors, (374), 374 states have call successors, (374) [2025-03-17 00:07:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 2177 transitions. [2025-03-17 00:07:07,422 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 2177 transitions. Word has length 427 [2025-03-17 00:07:07,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:07:07,423 INFO L471 AbstractCegarLoop]: Abstraction has 1323 states and 2177 transitions. [2025-03-17 00:07:07,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-17 00:07:07,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 2177 transitions. [2025-03-17 00:07:07,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2025-03-17 00:07:07,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:07:07,430 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:07:07,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 00:07:07,430 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:07:07,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:07:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1240271747, now seen corresponding path program 1 times [2025-03-17 00:07:07,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:07:07,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976227584] [2025-03-17 00:07:07,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:07:07,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:07:07,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 427 statements into 1 equivalence classes. [2025-03-17 00:07:07,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 427 of 427 statements. [2025-03-17 00:07:07,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:07:07,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:07:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-03-17 00:07:08,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:07:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976227584] [2025-03-17 00:07:08,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976227584] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:07:08,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:07:08,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 00:07:08,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215221750] [2025-03-17 00:07:08,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:07:08,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 00:07:08,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:07:08,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 00:07:08,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 00:07:08,551 INFO L87 Difference]: Start difference. First operand 1323 states and 2177 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:07:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:07:10,133 INFO L93 Difference]: Finished difference Result 4944 states and 8053 transitions. [2025-03-17 00:07:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 00:07:10,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 427 [2025-03-17 00:07:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:07:10,158 INFO L225 Difference]: With dead ends: 4944 [2025-03-17 00:07:10,159 INFO L226 Difference]: Without dead ends: 3666 [2025-03-17 00:07:10,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 00:07:10,167 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 610 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:07:10,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 1492 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 00:07:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2025-03-17 00:07:10,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 1661. [2025-03-17 00:07:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1171 states have (on average 1.5328778821520068) internal successors, (1795), 1182 states have internal predecessors, (1795), 470 states have call successors, (470), 19 states have call predecessors, (470), 19 states have return successors, (470), 459 states have call predecessors, (470), 470 states have call successors, (470) [2025-03-17 00:07:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2735 transitions. [2025-03-17 00:07:10,442 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2735 transitions. Word has length 427 [2025-03-17 00:07:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:07:10,443 INFO L471 AbstractCegarLoop]: Abstraction has 1661 states and 2735 transitions. [2025-03-17 00:07:10,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2025-03-17 00:07:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2735 transitions. [2025-03-17 00:07:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2025-03-17 00:07:10,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:07:10,447 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:07:10,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 00:07:10,447 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:07:10,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:07:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash -547170050, now seen corresponding path program 1 times [2025-03-17 00:07:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:07:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341922813] [2025-03-17 00:07:10,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:07:10,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:07:10,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 427 statements into 1 equivalence classes. [2025-03-17 00:07:10,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 427 of 427 statements. [2025-03-17 00:07:10,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:07:10,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:07:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-03-17 00:07:13,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:07:13,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341922813] [2025-03-17 00:07:13,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341922813] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:07:13,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:07:13,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 00:07:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792830736] [2025-03-17 00:07:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:07:13,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 00:07:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:07:13,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 00:07:13,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2025-03-17 00:07:13,750 INFO L87 Difference]: Start difference. First operand 1661 states and 2735 transitions. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-17 00:07:27,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:07:27,218 INFO L93 Difference]: Finished difference Result 23050 states and 37184 transitions. [2025-03-17 00:07:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-03-17 00:07:27,218 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 427 [2025-03-17 00:07:27,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:07:27,335 INFO L225 Difference]: With dead ends: 23050 [2025-03-17 00:07:27,335 INFO L226 Difference]: Without dead ends: 21434 [2025-03-17 00:07:27,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=972, Invalid=3584, Unknown=0, NotChecked=0, Total=4556 [2025-03-17 00:07:27,352 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 5651 mSDsluCounter, 3910 mSDsCounter, 0 mSdLazyCounter, 5214 mSolverCounterSat, 1684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5651 SdHoareTripleChecker+Valid, 4384 SdHoareTripleChecker+Invalid, 6898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1684 IncrementalHoareTripleChecker+Valid, 5214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2025-03-17 00:07:27,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5651 Valid, 4384 Invalid, 6898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1684 Valid, 5214 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2025-03-17 00:07:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21434 states. [2025-03-17 00:07:28,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21434 to 3992. [2025-03-17 00:07:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 2877 states have (on average 1.5370177267987486) internal successors, (4422), 2908 states have internal predecessors, (4422), 1066 states have call successors, (1066), 48 states have call predecessors, (1066), 48 states have return successors, (1066), 1035 states have call predecessors, (1066), 1066 states have call successors, (1066) [2025-03-17 00:07:28,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6554 transitions. [2025-03-17 00:07:28,528 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6554 transitions. Word has length 427 [2025-03-17 00:07:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:07:28,529 INFO L471 AbstractCegarLoop]: Abstraction has 3992 states and 6554 transitions. [2025-03-17 00:07:28,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-17 00:07:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6554 transitions. [2025-03-17 00:07:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2025-03-17 00:07:28,537 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:07:28,537 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:07:28,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 00:07:28,537 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:07:28,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:07:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1087516707, now seen corresponding path program 1 times [2025-03-17 00:07:28,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:07:28,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242623894] [2025-03-17 00:07:28,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:07:28,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:07:28,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 427 statements into 1 equivalence classes. [2025-03-17 00:07:28,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 427 of 427 statements. [2025-03-17 00:07:28,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:07:28,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:07:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2025-03-17 00:07:37,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:07:37,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242623894] [2025-03-17 00:07:37,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242623894] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:07:37,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:07:37,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2025-03-17 00:07:37,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551519866] [2025-03-17 00:07:37,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:07:37,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 00:07:37,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:07:37,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 00:07:37,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2025-03-17 00:07:37,950 INFO L87 Difference]: Start difference. First operand 3992 states and 6554 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-17 00:08:04,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:08:04,487 INFO L93 Difference]: Finished difference Result 15592 states and 25604 transitions. [2025-03-17 00:08:04,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-17 00:08:04,489 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 427 [2025-03-17 00:08:04,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:08:04,530 INFO L225 Difference]: With dead ends: 15592 [2025-03-17 00:08:04,530 INFO L226 Difference]: Without dead ends: 11601 [2025-03-17 00:08:04,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=668, Invalid=1782, Unknown=0, NotChecked=0, Total=2450 [2025-03-17 00:08:04,546 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 5630 mSDsluCounter, 4019 mSDsCounter, 0 mSdLazyCounter, 5091 mSolverCounterSat, 1926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5630 SdHoareTripleChecker+Valid, 4357 SdHoareTripleChecker+Invalid, 7017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1926 IncrementalHoareTripleChecker+Valid, 5091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2025-03-17 00:08:04,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5630 Valid, 4357 Invalid, 7017 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1926 Valid, 5091 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2025-03-17 00:08:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11601 states. [2025-03-17 00:08:05,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11601 to 5338. [2025-03-17 00:08:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 4033 states have (on average 1.5886436895611207) internal successors, (6407), 4069 states have internal predecessors, (6407), 1250 states have call successors, (1250), 54 states have call predecessors, (1250), 54 states have return successors, (1250), 1214 states have call predecessors, (1250), 1250 states have call successors, (1250) [2025-03-17 00:08:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8907 transitions. [2025-03-17 00:08:05,550 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8907 transitions. Word has length 427 [2025-03-17 00:08:05,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:08:05,551 INFO L471 AbstractCegarLoop]: Abstraction has 5338 states and 8907 transitions. [2025-03-17 00:08:05,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-03-17 00:08:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8907 transitions. [2025-03-17 00:08:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2025-03-17 00:08:05,556 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:08:05,556 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:08:05,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 00:08:05,556 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:08:05,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:08:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash 157247774, now seen corresponding path program 1 times [2025-03-17 00:08:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:08:05,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167923522] [2025-03-17 00:08:05,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:08:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:08:05,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 427 statements into 1 equivalence classes. [2025-03-17 00:08:05,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 427 of 427 statements. [2025-03-17 00:08:05,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:08:05,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat