./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.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_operatoramount_amount250_file-16.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 8e52341f27f00c0c2ceedafaab379711ebb86ba8e7b8a717254138078fb8d030 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 04:25:54,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 04:25:54,218 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 04:25:54,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 04:25:54,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 04:25:54,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 04:25:54,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 04:25:54,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 04:25:54,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 04:25:54,243 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 04:25:54,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 04:25:54,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 04:25:54,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 04:25:54,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 04:25:54,244 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 04:25:54,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 04:25:54,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 04:25:54,244 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 04:25:54,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 04:25:54,245 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 04:25:54,245 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 04:25:54,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 04:25:54,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 04:25:54,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 04:25:54,245 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 04:25:54,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 04:25:54,245 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 04:25:54,245 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 04:25:54,246 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 04:25:54,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 04:25:54,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 04:25:54,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 04:25:54,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:25:54,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 04:25:54,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 04:25:54,247 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 04:25:54,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 04:25:54,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 04:25:54,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 04:25:54,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 04:25:54,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 04:25:54,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 04:25:54,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 04:25:54,247 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 -> 8e52341f27f00c0c2ceedafaab379711ebb86ba8e7b8a717254138078fb8d030 [2025-03-17 04:25:54,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 04:25:54,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 04:25:54,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 04:25:54,499 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 04:25:54,500 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 04:25:54,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.i [2025-03-17 04:25:55,716 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6daafa6ba/48a1d030739c4fef88929b70f0b5acf2/FLAGfce6b6058 [2025-03-17 04:25:56,012 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 04:25:56,014 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.i [2025-03-17 04:25:56,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6daafa6ba/48a1d030739c4fef88929b70f0b5acf2/FLAGfce6b6058 [2025-03-17 04:25:56,298 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6daafa6ba/48a1d030739c4fef88929b70f0b5acf2 [2025-03-17 04:25:56,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 04:25:56,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 04:25:56,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 04:25:56,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 04:25:56,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 04:25:56,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3094874b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56, skipping insertion in model container [2025-03-17 04:25:56,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 04:25:56,424 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_operatoramount_amount250_file-16.i[916,929] [2025-03-17 04:25:56,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:25:56,529 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 04:25:56,537 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_operatoramount_amount250_file-16.i[916,929] [2025-03-17 04:25:56,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:25:56,613 INFO L204 MainTranslator]: Completed translation [2025-03-17 04:25:56,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56 WrapperNode [2025-03-17 04:25:56,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 04:25:56,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 04:25:56,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 04:25:56,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 04:25:56,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,672 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 425 [2025-03-17 04:25:56,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 04:25:56,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 04:25:56,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 04:25:56,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 04:25:56,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,726 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 04:25:56,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,749 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 04:25:56,777 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 04:25:56,778 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 04:25:56,778 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 04:25:56,779 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (1/1) ... [2025-03-17 04:25:56,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:25:56,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:25:56,805 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 04:25:56,807 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 04:25:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 04:25:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 04:25:56,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 04:25:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 04:25:56,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 04:25:56,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 04:25:56,904 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 04:25:56,905 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 04:25:57,505 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L355: havoc property_#t~bitwise35#1;havoc property_#t~short36#1;havoc property_#t~bitwise37#1;havoc property_#t~short38#1;havoc property_#t~bitwise39#1;havoc property_#t~short40#1; [2025-03-17 04:25:57,560 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2025-03-17 04:25:57,560 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 04:25:57,592 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 04:25:57,593 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 04:25:57,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:25:57 BoogieIcfgContainer [2025-03-17 04:25:57,595 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 04:25:57,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 04:25:57,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 04:25:57,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 04:25:57,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:25:56" (1/3) ... [2025-03-17 04:25:57,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5784e1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:25:57, skipping insertion in model container [2025-03-17 04:25:57,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:56" (2/3) ... [2025-03-17 04:25:57,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5784e1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:25:57, skipping insertion in model container [2025-03-17 04:25:57,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:25:57" (3/3) ... [2025-03-17 04:25:57,602 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-16.i [2025-03-17 04:25:57,613 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 04:25:57,616 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-16.i that has 2 procedures, 164 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 04:25:57,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 04:25:57,669 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;@562f2bea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 04:25:57,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 04:25:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 112 states have (on average 1.5089285714285714) internal successors, (169), 113 states have internal predecessors, (169), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-17 04:25:57,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2025-03-17 04:25:57,690 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:25:57,690 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:57,691 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:25:57,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:25:57,696 INFO L85 PathProgramCache]: Analyzing trace with hash 708825772, now seen corresponding path program 1 times [2025-03-17 04:25:57,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:25:57,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714339924] [2025-03-17 04:25:57,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:57,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:25:57,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-03-17 04:25:57,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-03-17 04:25:57,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:57,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-03-17 04:25:58,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:25:58,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714339924] [2025-03-17 04:25:58,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714339924] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:25:58,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672069225] [2025-03-17 04:25:58,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:58,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:25:58,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:25:58,139 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 04:25:58,141 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 04:25:58,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-03-17 04:25:58,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-03-17 04:25:58,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:58,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:58,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 04:25:58,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:25:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-03-17 04:25:58,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 04:25:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672069225] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:25:58,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:25:58,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 04:25:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790534906] [2025-03-17 04:25:58,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:25:58,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 04:25:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:25:58,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 04:25:58,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:25:58,470 INFO L87 Difference]: Start difference. First operand has 164 states, 112 states have (on average 1.5089285714285714) internal successors, (169), 113 states have internal predecessors, (169), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-17 04:25:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:25:58,512 INFO L93 Difference]: Finished difference Result 325 states and 581 transitions. [2025-03-17 04:25:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 04:25:58,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 318 [2025-03-17 04:25:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:25:58,520 INFO L225 Difference]: With dead ends: 325 [2025-03-17 04:25:58,520 INFO L226 Difference]: Without dead ends: 162 [2025-03-17 04:25:58,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 319 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 04:25:58,531 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:25:58,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 256 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:25:58,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-03-17 04:25:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2025-03-17 04:25:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 111 states have (on average 1.4774774774774775) internal successors, (164), 111 states have internal predecessors, (164), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-17 04:25:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 262 transitions. [2025-03-17 04:25:58,583 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 262 transitions. Word has length 318 [2025-03-17 04:25:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:25:58,585 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 262 transitions. [2025-03-17 04:25:58,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-17 04:25:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 262 transitions. [2025-03-17 04:25:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2025-03-17 04:25:58,594 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:25:58,594 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:58,603 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 04:25:58,795 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 04:25:58,795 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:25:58,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:25:58,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1230673013, now seen corresponding path program 1 times [2025-03-17 04:25:58,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:25:58,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486002450] [2025-03-17 04:25:58,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:58,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:25:58,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-03-17 04:25:58,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-03-17 04:25:58,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:58,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-17 04:25:59,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:25:59,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486002450] [2025-03-17 04:25:59,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486002450] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:25:59,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:25:59,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:25:59,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492531459] [2025-03-17 04:25:59,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:25:59,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:25:59,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:25:59,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:25:59,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:25:59,129 INFO L87 Difference]: Start difference. First operand 162 states and 262 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:25:59,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:25:59,245 INFO L93 Difference]: Finished difference Result 471 states and 761 transitions. [2025-03-17 04:25:59,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:25:59,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 318 [2025-03-17 04:25:59,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:25:59,249 INFO L225 Difference]: With dead ends: 471 [2025-03-17 04:25:59,252 INFO L226 Difference]: Without dead ends: 310 [2025-03-17 04:25:59,253 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 [2025-03-17 04:25:59,255 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 221 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:25:59,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 683 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:25:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2025-03-17 04:25:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 186. [2025-03-17 04:25:59,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 135 states have (on average 1.511111111111111) internal successors, (204), 135 states have internal predecessors, (204), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-17 04:25:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 302 transitions. [2025-03-17 04:25:59,284 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 302 transitions. Word has length 318 [2025-03-17 04:25:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:25:59,287 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 302 transitions. [2025-03-17 04:25:59,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:25:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 302 transitions. [2025-03-17 04:25:59,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2025-03-17 04:25:59,292 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:25:59,293 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:59,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 04:25:59,293 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:25:59,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:25:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash -879873076, now seen corresponding path program 1 times [2025-03-17 04:25:59,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:25:59,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839859924] [2025-03-17 04:25:59,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:59,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:25:59,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-03-17 04:25:59,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-03-17 04:25:59,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:59,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-17 04:25:59,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:25:59,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839859924] [2025-03-17 04:25:59,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839859924] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:25:59,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:25:59,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:25:59,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180816792] [2025-03-17 04:25:59,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:25:59,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:25:59,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:25:59,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:25:59,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:25:59,969 INFO L87 Difference]: Start difference. First operand 186 states and 302 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:26:00,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:00,247 INFO L93 Difference]: Finished difference Result 656 states and 1069 transitions. [2025-03-17 04:26:00,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:26:00,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 318 [2025-03-17 04:26:00,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:00,252 INFO L225 Difference]: With dead ends: 656 [2025-03-17 04:26:00,252 INFO L226 Difference]: Without dead ends: 471 [2025-03-17 04:26:00,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:26:00,253 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 286 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:00,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 855 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:26:00,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2025-03-17 04:26:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 377. [2025-03-17 04:26:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 276 states have (on average 1.5144927536231885) internal successors, (418), 276 states have internal predecessors, (418), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2025-03-17 04:26:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 614 transitions. [2025-03-17 04:26:00,286 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 614 transitions. Word has length 318 [2025-03-17 04:26:00,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:00,287 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 614 transitions. [2025-03-17 04:26:00,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:26:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 614 transitions. [2025-03-17 04:26:00,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-03-17 04:26:00,290 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:00,290 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:00,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 04:26:00,290 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:00,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:00,292 INFO L85 PathProgramCache]: Analyzing trace with hash 469800542, now seen corresponding path program 1 times [2025-03-17 04:26:00,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:00,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089678286] [2025-03-17 04:26:00,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:00,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:00,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-03-17 04:26:00,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-03-17 04:26:00,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:00,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-17 04:26:00,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:00,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089678286] [2025-03-17 04:26:00,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089678286] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:26:00,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:26:00,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:26:00,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181225065] [2025-03-17 04:26:00,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:26:00,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:26:00,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:00,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:26:00,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:26:00,709 INFO L87 Difference]: Start difference. First operand 377 states and 614 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:26:00,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:00,780 INFO L93 Difference]: Finished difference Result 1129 states and 1840 transitions. [2025-03-17 04:26:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:26:00,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 319 [2025-03-17 04:26:00,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:00,787 INFO L225 Difference]: With dead ends: 1129 [2025-03-17 04:26:00,788 INFO L226 Difference]: Without dead ends: 753 [2025-03-17 04:26:00,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:26:00,789 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 158 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:00,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 501 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:26:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2025-03-17 04:26:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2025-03-17 04:26:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 550 states have (on average 1.509090909090909) internal successors, (830), 550 states have internal predecessors, (830), 196 states have call successors, (196), 4 states have call predecessors, (196), 4 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2025-03-17 04:26:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1222 transitions. [2025-03-17 04:26:00,888 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1222 transitions. Word has length 319 [2025-03-17 04:26:00,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:00,891 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1222 transitions. [2025-03-17 04:26:00,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:26:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1222 transitions. [2025-03-17 04:26:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-03-17 04:26:00,894 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:00,895 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:00,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 04:26:00,895 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:00,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:00,895 INFO L85 PathProgramCache]: Analyzing trace with hash 681151455, now seen corresponding path program 1 times [2025-03-17 04:26:00,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:00,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919613362] [2025-03-17 04:26:00,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:00,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:00,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-03-17 04:26:01,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-03-17 04:26:01,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:01,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-17 04:26:01,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:01,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919613362] [2025-03-17 04:26:01,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919613362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:26:01,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:26:01,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:26:01,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776690724] [2025-03-17 04:26:01,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:26:01,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:26:01,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:01,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:26:01,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:26:01,596 INFO L87 Difference]: Start difference. First operand 751 states and 1222 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:26:01,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:01,972 INFO L93 Difference]: Finished difference Result 2625 states and 4271 transitions. [2025-03-17 04:26:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:26:01,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 319 [2025-03-17 04:26:01,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:01,983 INFO L225 Difference]: With dead ends: 2625 [2025-03-17 04:26:01,983 INFO L226 Difference]: Without dead ends: 1875 [2025-03-17 04:26:01,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:26:01,988 INFO L435 NwaCegarLoop]: 349 mSDtfsCounter, 287 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:01,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 839 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:26:01,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2025-03-17 04:26:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1499. [2025-03-17 04:26:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1098 states have (on average 1.4990892531876139) internal successors, (1646), 1098 states have internal predecessors, (1646), 392 states have call successors, (392), 8 states have call predecessors, (392), 8 states have return successors, (392), 392 states have call predecessors, (392), 392 states have call successors, (392) [2025-03-17 04:26:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2430 transitions. [2025-03-17 04:26:02,213 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2430 transitions. Word has length 319 [2025-03-17 04:26:02,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:02,213 INFO L471 AbstractCegarLoop]: Abstraction has 1499 states and 2430 transitions. [2025-03-17 04:26:02,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:26:02,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2430 transitions. [2025-03-17 04:26:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-03-17 04:26:02,219 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:02,219 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:02,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 04:26:02,220 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:02,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash -583088820, now seen corresponding path program 1 times [2025-03-17 04:26:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:02,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070967739] [2025-03-17 04:26:02,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:02,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:02,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-17 04:26:02,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-17 04:26:02,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:02,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-17 04:26:02,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:02,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070967739] [2025-03-17 04:26:02,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070967739] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:26:02,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:26:02,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:26:02,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623480722] [2025-03-17 04:26:02,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:26:02,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:26:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:02,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:26:02,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:26:02,957 INFO L87 Difference]: Start difference. First operand 1499 states and 2430 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:26:03,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:03,526 INFO L93 Difference]: Finished difference Result 3749 states and 6076 transitions. [2025-03-17 04:26:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:26:03,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 320 [2025-03-17 04:26:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:03,540 INFO L225 Difference]: With dead ends: 3749 [2025-03-17 04:26:03,540 INFO L226 Difference]: Without dead ends: 2251 [2025-03-17 04:26:03,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 04:26:03,545 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 184 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:03,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 826 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 04:26:03,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2025-03-17 04:26:03,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 1609. [2025-03-17 04:26:03,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1158 states have (on average 1.4818652849740932) internal successors, (1716), 1158 states have internal predecessors, (1716), 441 states have call successors, (441), 9 states have call predecessors, (441), 9 states have return successors, (441), 441 states have call predecessors, (441), 441 states have call successors, (441) [2025-03-17 04:26:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2598 transitions. [2025-03-17 04:26:03,675 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2598 transitions. Word has length 320 [2025-03-17 04:26:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:03,675 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2598 transitions. [2025-03-17 04:26:03,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:26:03,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2598 transitions. [2025-03-17 04:26:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-03-17 04:26:03,679 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:03,679 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:03,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 04:26:03,680 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:03,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:03,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1367211435, now seen corresponding path program 1 times [2025-03-17 04:26:03,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:03,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750708233] [2025-03-17 04:26:03,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:03,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:03,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-17 04:26:04,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-17 04:26:04,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:04,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 18 proven. 126 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-03-17 04:26:04,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:04,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750708233] [2025-03-17 04:26:04,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750708233] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:26:04,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782152482] [2025-03-17 04:26:04,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:04,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:26:04,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:26:04,842 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) [2025-03-17 04:26:04,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 04:26:04,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-17 04:26:05,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-17 04:26:05,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:05,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:05,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-17 04:26:05,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:26:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 3401 proven. 486 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2025-03-17 04:26:07,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:26:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 324 proven. 495 refuted. 0 times theorem prover too weak. 3885 trivial. 0 not checked. [2025-03-17 04:26:12,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782152482] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:26:12,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:26:12,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 25, 26] total 56 [2025-03-17 04:26:12,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169972065] [2025-03-17 04:26:12,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:26:12,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-03-17 04:26:12,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:12,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-03-17 04:26:12,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=735, Invalid=2345, Unknown=0, NotChecked=0, Total=3080 [2025-03-17 04:26:12,044 INFO L87 Difference]: Start difference. First operand 1609 states and 2598 transitions. Second operand has 56 states, 55 states have (on average 4.0) internal successors, (220), 54 states have internal predecessors, (220), 18 states have call successors, (147), 9 states have call predecessors, (147), 21 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) [2025-03-17 04:26:38,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:38,764 INFO L93 Difference]: Finished difference Result 32737 states and 50306 transitions. [2025-03-17 04:26:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2025-03-17 04:26:38,765 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.0) internal successors, (220), 54 states have internal predecessors, (220), 18 states have call successors, (147), 9 states have call predecessors, (147), 21 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) Word has length 320 [2025-03-17 04:26:38,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:38,879 INFO L225 Difference]: With dead ends: 32737 [2025-03-17 04:26:38,880 INFO L226 Difference]: Without dead ends: 31214 [2025-03-17 04:26:38,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71199 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=23449, Invalid=137753, Unknown=0, NotChecked=0, Total=161202 [2025-03-17 04:26:38,911 INFO L435 NwaCegarLoop]: 551 mSDtfsCounter, 12163 mSDsluCounter, 6248 mSDsCounter, 0 mSdLazyCounter, 10581 mSolverCounterSat, 3296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12164 SdHoareTripleChecker+Valid, 6799 SdHoareTripleChecker+Invalid, 13877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3296 IncrementalHoareTripleChecker+Valid, 10581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:38,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12164 Valid, 6799 Invalid, 13877 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3296 Valid, 10581 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2025-03-17 04:26:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31214 states. [2025-03-17 04:26:40,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31214 to 22806. [2025-03-17 04:26:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22806 states, 19818 states have (on average 1.5506105560601473) internal successors, (30730), 19878 states have internal predecessors, (30730), 2601 states have call successors, (2601), 386 states have call predecessors, (2601), 386 states have return successors, (2601), 2541 states have call predecessors, (2601), 2601 states have call successors, (2601) [2025-03-17 04:26:40,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22806 states to 22806 states and 35932 transitions. [2025-03-17 04:26:40,363 INFO L78 Accepts]: Start accepts. Automaton has 22806 states and 35932 transitions. Word has length 320 [2025-03-17 04:26:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:40,364 INFO L471 AbstractCegarLoop]: Abstraction has 22806 states and 35932 transitions. [2025-03-17 04:26:40,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.0) internal successors, (220), 54 states have internal predecessors, (220), 18 states have call successors, (147), 9 states have call predecessors, (147), 21 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) [2025-03-17 04:26:40,365 INFO L276 IsEmpty]: Start isEmpty. Operand 22806 states and 35932 transitions. [2025-03-17 04:26:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-03-17 04:26:40,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:40,379 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:40,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 04:26:40,580 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,SelfDestructingSolverStorable6 [2025-03-17 04:26:40,580 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:40,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash 87780969, now seen corresponding path program 1 times [2025-03-17 04:26:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:40,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876392446] [2025-03-17 04:26:40,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:40,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-17 04:26:41,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-17 04:26:41,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:41,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 180 proven. 234 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2025-03-17 04:26:43,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:43,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876392446] [2025-03-17 04:26:43,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876392446] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:26:43,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263680190] [2025-03-17 04:26:43,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:43,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:26:43,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:26:43,432 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) [2025-03-17 04:26:43,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 04:26:43,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-17 04:26:43,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-17 04:26:43,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:43,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:43,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-17 04:26:43,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:26:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 3268 proven. 372 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2025-03-17 04:26:45,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:26:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 327 proven. 363 refuted. 0 times theorem prover too weak. 4014 trivial. 0 not checked. [2025-03-17 04:26:48,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263680190] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:26:48,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:26:48,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25, 24] total 59 [2025-03-17 04:26:48,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742333950] [2025-03-17 04:26:48,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:26:48,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-03-17 04:26:48,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:48,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-03-17 04:26:48,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=747, Invalid=2675, Unknown=0, NotChecked=0, Total=3422 [2025-03-17 04:26:48,338 INFO L87 Difference]: Start difference. First operand 22806 states and 35932 transitions. Second operand has 59 states, 55 states have (on average 3.981818181818182) internal successors, (219), 55 states have internal predecessors, (219), 22 states have call successors, (147), 9 states have call predecessors, (147), 17 states have return successors, (147), 19 states have call predecessors, (147), 22 states have call successors, (147) [2025-03-17 04:27:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:09,072 INFO L93 Difference]: Finished difference Result 73654 states and 112670 transitions. [2025-03-17 04:27:09,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2025-03-17 04:27:09,073 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 55 states have (on average 3.981818181818182) internal successors, (219), 55 states have internal predecessors, (219), 22 states have call successors, (147), 9 states have call predecessors, (147), 17 states have return successors, (147), 19 states have call predecessors, (147), 22 states have call successors, (147) Word has length 320 [2025-03-17 04:27:09,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:09,249 INFO L225 Difference]: With dead ends: 73654 [2025-03-17 04:27:09,249 INFO L226 Difference]: Without dead ends: 51008 [2025-03-17 04:27:09,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18522 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=9745, Invalid=42925, Unknown=0, NotChecked=0, Total=52670 [2025-03-17 04:27:09,297 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 4544 mSDsluCounter, 7128 mSDsCounter, 0 mSdLazyCounter, 10066 mSolverCounterSat, 1927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 7537 SdHoareTripleChecker+Invalid, 11993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1927 IncrementalHoareTripleChecker+Valid, 10066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:09,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4569 Valid, 7537 Invalid, 11993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1927 Valid, 10066 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2025-03-17 04:27:09,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51008 states. [2025-03-17 04:27:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51008 to 37950. [2025-03-17 04:27:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37950 states, 31936 states have (on average 1.5166583166332666) internal successors, (48436), 32084 states have internal predecessors, (48436), 5149 states have call successors, (5149), 864 states have call predecessors, (5149), 864 states have return successors, (5149), 5001 states have call predecessors, (5149), 5149 states have call successors, (5149) [2025-03-17 04:27:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37950 states to 37950 states and 58734 transitions. [2025-03-17 04:27:13,485 INFO L78 Accepts]: Start accepts. Automaton has 37950 states and 58734 transitions. Word has length 320 [2025-03-17 04:27:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:13,485 INFO L471 AbstractCegarLoop]: Abstraction has 37950 states and 58734 transitions. [2025-03-17 04:27:13,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 55 states have (on average 3.981818181818182) internal successors, (219), 55 states have internal predecessors, (219), 22 states have call successors, (147), 9 states have call predecessors, (147), 17 states have return successors, (147), 19 states have call predecessors, (147), 22 states have call successors, (147) [2025-03-17 04:27:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 37950 states and 58734 transitions. [2025-03-17 04:27:13,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2025-03-17 04:27:13,496 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:13,497 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:13,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 04:27:13,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:13,698 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:13,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1636109973, now seen corresponding path program 1 times [2025-03-17 04:27:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437619665] [2025-03-17 04:27:13,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:13,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-03-17 04:27:14,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-03-17 04:27:14,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:14,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat