./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.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 57aa769afed4a061f728787b55a05b2a082848f9dc6ce06d34092eb1dbdd7a2a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 23:26:12,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 23:26:13,062 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 23:26:13,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 23:26:13,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 23:26:13,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 23:26:13,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 23:26:13,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 23:26:13,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 23:26:13,098 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 23:26:13,098 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 23:26:13,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 23:26:13,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 23:26:13,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 23:26:13,099 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 23:26:13,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 23:26:13,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 23:26:13,100 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 23:26:13,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 23:26:13,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 23:26:13,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 23:26:13,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 23:26:13,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 23:26:13,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 23:26:13,101 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 23:26:13,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 23:26:13,101 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 23:26:13,101 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 23:26:13,101 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 23:26:13,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 23:26:13,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 23:26:13,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 23:26:13,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 23:26:13,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 23:26:13,102 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 23:26:13,103 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 23:26:13,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 23:26:13,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 23:26:13,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 23:26:13,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 23:26:13,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 23:26:13,103 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 23:26:13,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 23:26:13,103 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 -> 57aa769afed4a061f728787b55a05b2a082848f9dc6ce06d34092eb1dbdd7a2a [2025-03-03 23:26:13,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 23:26:13,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 23:26:13,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 23:26:13,354 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 23:26:13,354 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 23:26:13,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i [2025-03-03 23:26:14,497 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743d829d9/b90ffb5eda62438c9c744b01429a005b/FLAGf7b16bec4 [2025-03-03 23:26:14,715 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 23:26:14,717 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i [2025-03-03 23:26:14,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743d829d9/b90ffb5eda62438c9c744b01429a005b/FLAGf7b16bec4 [2025-03-03 23:26:14,739 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743d829d9/b90ffb5eda62438c9c744b01429a005b [2025-03-03 23:26:14,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 23:26:14,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 23:26:14,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 23:26:14,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 23:26:14,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 23:26:14,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f439a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14, skipping insertion in model container [2025-03-03 23:26:14,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,761 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 23:26:14,856 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_loopvsstraightlinecode_25-while_file-87.i[915,928] [2025-03-03 23:26:14,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 23:26:14,895 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 23:26:14,902 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_loopvsstraightlinecode_25-while_file-87.i[915,928] [2025-03-03 23:26:14,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 23:26:14,932 INFO L204 MainTranslator]: Completed translation [2025-03-03 23:26:14,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14 WrapperNode [2025-03-03 23:26:14,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 23:26:14,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 23:26:14,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 23:26:14,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 23:26:14,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,957 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2025-03-03 23:26:14,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 23:26:14,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 23:26:14,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 23:26:14,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 23:26:14,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,965 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,972 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 23:26:14,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,975 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,976 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,977 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,978 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 23:26:14,978 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 23:26:14,979 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 23:26:14,979 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 23:26:14,979 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (1/1) ... [2025-03-03 23:26:14,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 23:26:14,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:26:15,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 23:26:15,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 23:26:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 23:26:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 23:26:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 23:26:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 23:26:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 23:26:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 23:26:15,070 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 23:26:15,072 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 23:26:15,282 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L93: havoc property_#t~bitwise12#1;havoc property_#t~short13#1; [2025-03-03 23:26:15,304 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-03-03 23:26:15,304 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 23:26:15,317 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 23:26:15,319 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-03 23:26:15,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:26:15 BoogieIcfgContainer [2025-03-03 23:26:15,319 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 23:26:15,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 23:26:15,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 23:26:15,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 23:26:15,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:26:14" (1/3) ... [2025-03-03 23:26:15,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24388cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:26:15, skipping insertion in model container [2025-03-03 23:26:15,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:14" (2/3) ... [2025-03-03 23:26:15,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24388cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:26:15, skipping insertion in model container [2025-03-03 23:26:15,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:26:15" (3/3) ... [2025-03-03 23:26:15,327 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-87.i [2025-03-03 23:26:15,337 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 23:26:15,338 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-87.i that has 2 procedures, 56 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 23:26:15,374 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 23:26:15,382 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;@462224e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 23:26:15,382 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 23:26:15,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-03 23:26:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-03 23:26:15,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:15,392 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:15,392 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:15,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:15,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1094625662, now seen corresponding path program 1 times [2025-03-03 23:26:15,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:15,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668737719] [2025-03-03 23:26:15,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:15,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-03 23:26:15,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-03 23:26:15,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:15,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2025-03-03 23:26:15,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:26:15,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668737719] [2025-03-03 23:26:15,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668737719] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 23:26:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090325069] [2025-03-03 23:26:15,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:15,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:26:15,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:26:15,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 23:26:15,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 23:26:15,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-03 23:26:15,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-03 23:26:15,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:15,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:15,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 23:26:15,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:26:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2025-03-03 23:26:15,702 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 23:26:15,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090325069] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:15,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 23:26:15,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 23:26:15,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805109333] [2025-03-03 23:26:15,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:15,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 23:26:15,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:26:15,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 23:26:15,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 23:26:15,722 INFO L87 Difference]: Start difference. First operand has 56 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 23:26:15,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:15,747 INFO L93 Difference]: Finished difference Result 106 states and 171 transitions. [2025-03-03 23:26:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 23:26:15,749 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2025-03-03 23:26:15,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:15,753 INFO L225 Difference]: With dead ends: 106 [2025-03-03 23:26:15,753 INFO L226 Difference]: Without dead ends: 53 [2025-03-03 23:26:15,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 23:26:15,757 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:15,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 23:26:15,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-03-03 23:26:15,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2025-03-03 23:26:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-03 23:26:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2025-03-03 23:26:15,782 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 96 [2025-03-03 23:26:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:15,782 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2025-03-03 23:26:15,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 23:26:15,783 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2025-03-03 23:26:15,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-03 23:26:15,785 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:15,785 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:15,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 23:26:15,988 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 [2025-03-03 23:26:15,988 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:15,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:15,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1291188032, now seen corresponding path program 1 times [2025-03-03 23:26:15,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:15,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097145253] [2025-03-03 23:26:15,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:15,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:16,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-03 23:26:16,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-03 23:26:16,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:16,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-03 23:26:19,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:26:19,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097145253] [2025-03-03 23:26:19,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097145253] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:19,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:26:19,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 23:26:19,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186573030] [2025-03-03 23:26:19,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:19,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 23:26:19,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:26:19,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 23:26:19,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 23:26:19,212 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:19,343 INFO L93 Difference]: Finished difference Result 124 states and 177 transitions. [2025-03-03 23:26:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 23:26:19,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2025-03-03 23:26:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:19,345 INFO L225 Difference]: With dead ends: 124 [2025-03-03 23:26:19,345 INFO L226 Difference]: Without dead ends: 74 [2025-03-03 23:26:19,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-03 23:26:19,346 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 67 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:19,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 198 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 23:26:19,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-03 23:26:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2025-03-03 23:26:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-03 23:26:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 91 transitions. [2025-03-03 23:26:19,356 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 91 transitions. Word has length 96 [2025-03-03 23:26:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:19,357 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 91 transitions. [2025-03-03 23:26:19,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 91 transitions. [2025-03-03 23:26:19,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 23:26:19,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:19,360 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:19,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 23:26:19,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:19,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:19,361 INFO L85 PathProgramCache]: Analyzing trace with hash -171775826, now seen corresponding path program 1 times [2025-03-03 23:26:19,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:19,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530004215] [2025-03-03 23:26:19,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:19,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:19,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 23:26:19,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 23:26:19,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:19,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-03 23:26:21,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:26:21,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530004215] [2025-03-03 23:26:21,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530004215] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:21,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:26:21,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 23:26:21,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151474411] [2025-03-03 23:26:21,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:21,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 23:26:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:26:21,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 23:26:21,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-03 23:26:21,138 INFO L87 Difference]: Start difference. First operand 63 states and 91 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:21,606 INFO L93 Difference]: Finished difference Result 206 states and 290 transitions. [2025-03-03 23:26:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 23:26:21,607 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 97 [2025-03-03 23:26:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:21,608 INFO L225 Difference]: With dead ends: 206 [2025-03-03 23:26:21,608 INFO L226 Difference]: Without dead ends: 146 [2025-03-03 23:26:21,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-03 23:26:21,609 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 107 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:21,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 437 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 23:26:21,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-03-03 23:26:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 76. [2025-03-03 23:26:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 60 states have (on average 1.3833333333333333) internal successors, (83), 60 states have internal predecessors, (83), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-03 23:26:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 111 transitions. [2025-03-03 23:26:21,617 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 111 transitions. Word has length 97 [2025-03-03 23:26:21,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:21,618 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 111 transitions. [2025-03-03 23:26:21,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 111 transitions. [2025-03-03 23:26:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 23:26:21,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:21,620 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:21,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 23:26:21,620 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:21,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:21,621 INFO L85 PathProgramCache]: Analyzing trace with hash -42693107, now seen corresponding path program 1 times [2025-03-03 23:26:21,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:21,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154998655] [2025-03-03 23:26:21,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:21,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:21,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 23:26:21,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 23:26:21,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:21,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-03 23:26:21,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:26:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154998655] [2025-03-03 23:26:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154998655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:21,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:26:21,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 23:26:21,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632551725] [2025-03-03 23:26:21,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:21,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 23:26:21,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:26:21,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 23:26:21,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 23:26:21,926 INFO L87 Difference]: Start difference. First operand 76 states and 111 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:22,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:22,152 INFO L93 Difference]: Finished difference Result 213 states and 303 transitions. [2025-03-03 23:26:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 23:26:22,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 97 [2025-03-03 23:26:22,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:22,156 INFO L225 Difference]: With dead ends: 213 [2025-03-03 23:26:22,156 INFO L226 Difference]: Without dead ends: 140 [2025-03-03 23:26:22,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 23:26:22,158 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 70 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:22,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 268 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 23:26:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-03-03 23:26:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120. [2025-03-03 23:26:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 101 states have (on average 1.396039603960396) internal successors, (141), 102 states have internal predecessors, (141), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-03 23:26:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 173 transitions. [2025-03-03 23:26:22,178 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 173 transitions. Word has length 97 [2025-03-03 23:26:22,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:22,179 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 173 transitions. [2025-03-03 23:26:22,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 173 transitions. [2025-03-03 23:26:22,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 23:26:22,183 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:22,183 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:22,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 23:26:22,183 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:22,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:22,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1335775983, now seen corresponding path program 1 times [2025-03-03 23:26:22,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:22,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563615483] [2025-03-03 23:26:22,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:22,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:22,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 23:26:22,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 23:26:22,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:22,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-03 23:26:22,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:26:22,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563615483] [2025-03-03 23:26:22,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563615483] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:22,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:26:22,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-03 23:26:22,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287737614] [2025-03-03 23:26:22,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:22,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 23:26:22,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:26:22,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 23:26:22,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-03 23:26:22,889 INFO L87 Difference]: Start difference. First operand 120 states and 173 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 23:26:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:23,354 INFO L93 Difference]: Finished difference Result 337 states and 480 transitions. [2025-03-03 23:26:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 23:26:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2025-03-03 23:26:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:23,357 INFO L225 Difference]: With dead ends: 337 [2025-03-03 23:26:23,357 INFO L226 Difference]: Without dead ends: 220 [2025-03-03 23:26:23,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2025-03-03 23:26:23,359 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 169 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:23,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 552 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 23:26:23,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-03-03 23:26:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 186. [2025-03-03 23:26:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 149 states have (on average 1.3758389261744965) internal successors, (205), 151 states have internal predecessors, (205), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-03 23:26:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2025-03-03 23:26:23,391 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 97 [2025-03-03 23:26:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:23,391 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2025-03-03 23:26:23,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 23:26:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2025-03-03 23:26:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 23:26:23,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:23,392 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:23,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 23:26:23,393 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:23,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1464858702, now seen corresponding path program 1 times [2025-03-03 23:26:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:23,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989926843] [2025-03-03 23:26:23,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:23,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:23,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 23:26:23,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 23:26:23,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:23,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-03 23:26:23,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:26:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989926843] [2025-03-03 23:26:23,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989926843] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:23,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:26:23,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 23:26:23,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214192452] [2025-03-03 23:26:23,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:23,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 23:26:23,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:26:23,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 23:26:23,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 23:26:23,593 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 23:26:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:23,706 INFO L93 Difference]: Finished difference Result 353 states and 511 transitions. [2025-03-03 23:26:23,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 23:26:23,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2025-03-03 23:26:23,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:23,708 INFO L225 Difference]: With dead ends: 353 [2025-03-03 23:26:23,708 INFO L226 Difference]: Without dead ends: 178 [2025-03-03 23:26:23,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-03 23:26:23,713 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 93 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:23,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 216 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 23:26:23,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-03 23:26:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2025-03-03 23:26:23,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 139 states have (on average 1.3525179856115108) internal successors, (188), 141 states have internal predecessors, (188), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-03 23:26:23,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 252 transitions. [2025-03-03 23:26:23,727 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 252 transitions. Word has length 97 [2025-03-03 23:26:23,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:23,727 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 252 transitions. [2025-03-03 23:26:23,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 23:26:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 252 transitions. [2025-03-03 23:26:23,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 23:26:23,728 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:23,728 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:23,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 23:26:23,729 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:23,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:23,729 INFO L85 PathProgramCache]: Analyzing trace with hash -412549442, now seen corresponding path program 1 times [2025-03-03 23:26:23,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:23,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519162298] [2025-03-03 23:26:23,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:23,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:23,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 23:26:23,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 23:26:23,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:23,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-03 23:26:25,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:26:25,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519162298] [2025-03-03 23:26:25,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519162298] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:25,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:26:25,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 23:26:25,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963844230] [2025-03-03 23:26:25,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:25,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 23:26:25,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:26:25,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 23:26:25,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 23:26:25,625 INFO L87 Difference]: Start difference. First operand 176 states and 252 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:27,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:27,111 INFO L93 Difference]: Finished difference Result 340 states and 458 transitions. [2025-03-03 23:26:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 23:26:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 98 [2025-03-03 23:26:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:27,114 INFO L225 Difference]: With dead ends: 340 [2025-03-03 23:26:27,114 INFO L226 Difference]: Without dead ends: 338 [2025-03-03 23:26:27,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2025-03-03 23:26:27,115 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 78 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:27,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 434 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 23:26:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2025-03-03 23:26:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 282. [2025-03-03 23:26:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 232 states have (on average 1.3189655172413792) internal successors, (306), 237 states have internal predecessors, (306), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 37 states have call predecessors, (42), 42 states have call successors, (42) [2025-03-03 23:26:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 390 transitions. [2025-03-03 23:26:27,141 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 390 transitions. Word has length 98 [2025-03-03 23:26:27,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:27,141 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 390 transitions. [2025-03-03 23:26:27,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 390 transitions. [2025-03-03 23:26:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 23:26:27,143 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:27,143 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:27,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 23:26:27,143 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:27,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:27,143 INFO L85 PathProgramCache]: Analyzing trace with hash 867465367, now seen corresponding path program 1 times [2025-03-03 23:26:27,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:27,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217386594] [2025-03-03 23:26:27,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:27,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:27,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 23:26:27,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 23:26:27,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:27,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-03 23:26:28,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:26:28,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217386594] [2025-03-03 23:26:28,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217386594] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:28,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:26:28,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-03 23:26:28,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109572270] [2025-03-03 23:26:28,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:28,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 23:26:28,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:26:28,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 23:26:28,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-03 23:26:28,199 INFO L87 Difference]: Start difference. First operand 282 states and 390 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:28,610 INFO L93 Difference]: Finished difference Result 498 states and 683 transitions. [2025-03-03 23:26:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 23:26:28,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 98 [2025-03-03 23:26:28,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:28,615 INFO L225 Difference]: With dead ends: 498 [2025-03-03 23:26:28,615 INFO L226 Difference]: Without dead ends: 306 [2025-03-03 23:26:28,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-03 23:26:28,616 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 49 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:28,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 461 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 23:26:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2025-03-03 23:26:28,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 274. [2025-03-03 23:26:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 224 states have (on average 1.3080357142857142) internal successors, (293), 229 states have internal predecessors, (293), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 37 states have call predecessors, (42), 42 states have call successors, (42) [2025-03-03 23:26:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 377 transitions. [2025-03-03 23:26:28,637 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 377 transitions. Word has length 98 [2025-03-03 23:26:28,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:28,638 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 377 transitions. [2025-03-03 23:26:28,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:28,638 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 377 transitions. [2025-03-03 23:26:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 23:26:28,638 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:28,639 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:28,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 23:26:28,639 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:28,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash 574062360, now seen corresponding path program 1 times [2025-03-03 23:26:28,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:28,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105563836] [2025-03-03 23:26:28,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:28,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:28,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 23:26:28,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 23:26:28,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:28,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-03 23:26:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:26:30,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105563836] [2025-03-03 23:26:30,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105563836] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:30,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:26:30,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-03 23:26:30,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084740020] [2025-03-03 23:26:30,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:30,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 23:26:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:26:30,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 23:26:30,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-03 23:26:30,024 INFO L87 Difference]: Start difference. First operand 274 states and 377 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:30,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:30,620 INFO L93 Difference]: Finished difference Result 470 states and 643 transitions. [2025-03-03 23:26:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 23:26:30,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 98 [2025-03-03 23:26:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:30,622 INFO L225 Difference]: With dead ends: 470 [2025-03-03 23:26:30,622 INFO L226 Difference]: Without dead ends: 286 [2025-03-03 23:26:30,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-03-03 23:26:30,623 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 48 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:30,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 436 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 23:26:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2025-03-03 23:26:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 274. [2025-03-03 23:26:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 224 states have (on average 1.3035714285714286) internal successors, (292), 229 states have internal predecessors, (292), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 37 states have call predecessors, (42), 42 states have call successors, (42) [2025-03-03 23:26:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 376 transitions. [2025-03-03 23:26:30,648 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 376 transitions. Word has length 98 [2025-03-03 23:26:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:30,648 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 376 transitions. [2025-03-03 23:26:30,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 376 transitions. [2025-03-03 23:26:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-03 23:26:30,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:30,649 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:30,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 23:26:30,650 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:30,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:30,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1596187523, now seen corresponding path program 1 times [2025-03-03 23:26:30,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:30,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049821969] [2025-03-03 23:26:30,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:30,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:30,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-03 23:26:30,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 23:26:30,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:30,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-03 23:26:30,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:26:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049821969] [2025-03-03 23:26:30,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049821969] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:30,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:26:30,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 23:26:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955202572] [2025-03-03 23:26:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:30,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 23:26:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:26:30,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 23:26:30,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 23:26:30,685 INFO L87 Difference]: Start difference. First operand 274 states and 376 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:30,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:30,733 INFO L93 Difference]: Finished difference Result 644 states and 874 transitions. [2025-03-03 23:26:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 23:26:30,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 99 [2025-03-03 23:26:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:30,735 INFO L225 Difference]: With dead ends: 644 [2025-03-03 23:26:30,735 INFO L226 Difference]: Without dead ends: 381 [2025-03-03 23:26:30,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 23:26:30,736 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 26 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:30,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 148 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 23:26:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2025-03-03 23:26:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 295. [2025-03-03 23:26:30,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 242 states have (on average 1.3099173553719008) internal successors, (317), 248 states have internal predecessors, (317), 44 states have call successors, (44), 8 states have call predecessors, (44), 8 states have return successors, (44), 38 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-03 23:26:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 405 transitions. [2025-03-03 23:26:30,764 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 405 transitions. Word has length 99 [2025-03-03 23:26:30,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:30,766 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 405 transitions. [2025-03-03 23:26:30,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 23:26:30,766 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 405 transitions. [2025-03-03 23:26:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-03 23:26:30,767 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:30,768 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:30,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 23:26:30,768 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:30,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1531768586, now seen corresponding path program 1 times [2025-03-03 23:26:30,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:26:30,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837787182] [2025-03-03 23:26:30,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:30,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:26:30,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-03 23:26:30,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 23:26:30,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:30,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 23:26:30,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801535853] [2025-03-03 23:26:30,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:30,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:26:30,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:26:30,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 23:26:30,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 23:26:30,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-03 23:26:30,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 23:26:30,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:30,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 23:26:30,860 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 23:26:30,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-03 23:26:30,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 23:26:30,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:30,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 23:26:30,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 23:26:30,978 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 23:26:30,979 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 23:26:30,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 23:26:31,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-03 23:26:31,189 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:31,244 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 23:26:31,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 11:26:31 BoogieIcfgContainer [2025-03-03 23:26:31,247 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 23:26:31,248 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 23:26:31,248 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 23:26:31,248 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 23:26:31,248 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:26:15" (3/4) ... [2025-03-03 23:26:31,250 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-03 23:26:31,251 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 23:26:31,251 INFO L158 Benchmark]: Toolchain (without parser) took 16509.26ms. Allocated memory was 142.6MB in the beginning and 545.3MB in the end (delta: 402.7MB). Free memory was 111.8MB in the beginning and 500.9MB in the end (delta: -389.1MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2025-03-03 23:26:31,251 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory was 127.1MB in the beginning and 126.8MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 23:26:31,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.30ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 99.6MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 23:26:31,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.35ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 97.7MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 23:26:31,252 INFO L158 Benchmark]: Boogie Preprocessor took 20.43ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 96.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 23:26:31,252 INFO L158 Benchmark]: IcfgBuilder took 340.59ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 79.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 23:26:31,252 INFO L158 Benchmark]: TraceAbstraction took 15926.46ms. Allocated memory was 142.6MB in the beginning and 545.3MB in the end (delta: 402.7MB). Free memory was 78.8MB in the beginning and 501.1MB in the end (delta: -422.3MB). Peak memory consumption was 289.8MB. Max. memory is 16.1GB. [2025-03-03 23:26:31,252 INFO L158 Benchmark]: Witness Printer took 3.08ms. Allocated memory is still 545.3MB. Free memory was 501.1MB in the beginning and 500.9MB in the end (delta: 175.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 23:26:31,253 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory was 127.1MB in the beginning and 126.8MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.30ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 99.6MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.35ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 97.7MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.43ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 96.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 340.59ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 79.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15926.46ms. Allocated memory was 142.6MB in the beginning and 545.3MB in the end (delta: 402.7MB). Free memory was 78.8MB in the beginning and 501.1MB in the end (delta: -422.3MB). Peak memory consumption was 289.8MB. Max. memory is 16.1GB. * Witness Printer took 3.08ms. Allocated memory is still 545.3MB. Free memory was 501.1MB in the beginning and 500.9MB in the end (delta: 175.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 83, overapproximation of someBinaryFLOATComparisonOperation at line 93. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned long int var_1_1 = 1; [L23] unsigned char var_1_2 = 0; [L24] unsigned long int var_1_3 = 3164414017; [L25] unsigned long int var_1_4 = 128; [L26] signed char var_1_5 = -128; [L27] signed char var_1_6 = 10; [L28] signed char var_1_7 = 50; [L29] float var_1_8 = 5.1; [L30] float var_1_9 = 63.75; [L31] signed char var_1_10 = 100; [L32] signed long int var_1_12 = 5; [L33] signed char last_1_var_1_10 = 100; VAL [isInitial=0, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=0, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L97] isInitial = 1 [L98] FCALL initially() [L99] COND TRUE 1 [L100] CALL updateLastVariables() [L90] last_1_var_1_10 = var_1_10 VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=0, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L100] RET updateLastVariables() [L101] CALL updateVariables() [L67] var_1_2 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L68] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L69] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L69] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L70] var_1_3 = __VERIFIER_nondet_ulong() [L71] CALL assume_abort_if_not(var_1_3 >= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L71] RET assume_abort_if_not(var_1_3 >= 2147483647) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L72] CALL assume_abort_if_not(var_1_3 <= 4294967294) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L72] RET assume_abort_if_not(var_1_3 <= 4294967294) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L73] var_1_4 = __VERIFIER_nondet_ulong() [L74] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L74] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L75] CALL assume_abort_if_not(var_1_4 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L75] RET assume_abort_if_not(var_1_4 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L76] var_1_6 = __VERIFIER_nondet_char() [L77] CALL assume_abort_if_not(var_1_6 >= -126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L77] RET assume_abort_if_not(var_1_6 >= -126) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L78] CALL assume_abort_if_not(var_1_6 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L78] RET assume_abort_if_not(var_1_6 <= 126) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L79] var_1_7 = __VERIFIER_nondet_char() [L80] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10, var_1_9=255/4] [L80] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10, var_1_9=255/4] [L81] CALL assume_abort_if_not(var_1_7 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10, var_1_9=255/4] [L81] RET assume_abort_if_not(var_1_7 <= 126) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10, var_1_9=255/4] [L82] var_1_9 = __VERIFIER_nondet_float() [L83] CALL assume_abort_if_not((var_1_9 >= -922337.2036854765600e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854765600e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L83] RET assume_abort_if_not((var_1_9 >= -922337.2036854765600e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854765600e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L84] var_1_12 = __VERIFIER_nondet_long() [L85] CALL assume_abort_if_not(var_1_12 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L85] RET assume_abort_if_not(var_1_12 >= -2147483648) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L86] CALL assume_abort_if_not(var_1_12 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L86] RET assume_abort_if_not(var_1_12 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L87] CALL assume_abort_if_not(var_1_12 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L87] RET assume_abort_if_not(var_1_12 != 0) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=1, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L101] RET updateVariables() [L102] CALL step() [L37] COND TRUE \read(var_1_2) [L38] var_1_1 = ((((var_1_3 - var_1_4) < 0 ) ? -(var_1_3 - var_1_4) : (var_1_3 - var_1_4))) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L40] signed long int stepLocal_1 = -8; [L41] unsigned long int stepLocal_0 = var_1_1; VAL [isInitial=1, last_1_var_1_10=100, stepLocal_0=-125, stepLocal_1=-8, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-128, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L42] COND FALSE !(stepLocal_1 < var_1_4) [L49] var_1_5 = -2 VAL [isInitial=1, last_1_var_1_10=100, stepLocal_0=-125, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L51] unsigned long int stepLocal_3 = var_1_1; VAL [isInitial=1, last_1_var_1_10=100, stepLocal_0=-125, stepLocal_3=-125, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L52] EXPR var_1_4 >> var_1_3 VAL [isInitial=1, last_1_var_1_10=100, stepLocal_0=-125, stepLocal_3=-125, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L52] unsigned long int stepLocal_2 = var_1_4 >> var_1_3; [L53] COND TRUE var_1_6 >= stepLocal_2 VAL [isInitial=1, last_1_var_1_10=100, stepLocal_0=-125, stepLocal_3=-125, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=51/10] [L54] COND TRUE var_1_6 != stepLocal_3 [L55] var_1_8 = var_1_9 VAL [isInitial=1, last_1_var_1_10=100, stepLocal_0=-125, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=2, var_1_9=2] [L58] COND FALSE !((var_1_1 + (var_1_6 / var_1_12)) < var_1_1) VAL [isInitial=1, last_1_var_1_10=100, stepLocal_0=-125, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=2, var_1_9=2] [L102] RET step() [L103] CALL, EXPR property() [L93] EXPR ((var_1_2 ? (var_1_1 == ((unsigned long int) ((((var_1_3 - var_1_4) < 0 ) ? -(var_1_3 - var_1_4) : (var_1_3 - var_1_4))))) : 1) && ((-8 < var_1_4) ? ((var_1_4 != var_1_1) ? (var_1_5 == ((signed char) (((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))) - var_1_7))) : (var_1_5 == ((signed char) var_1_6))) : (var_1_5 == ((signed char) -2)))) && ((var_1_6 >= (var_1_4 >> var_1_3)) ? ((var_1_6 != var_1_1) ? (var_1_8 == ((float) var_1_9)) : 1) : 1) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=2, var_1_9=2] [L93] EXPR var_1_4 >> var_1_3 VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=2, var_1_9=2] [L93] EXPR ((var_1_2 ? (var_1_1 == ((unsigned long int) ((((var_1_3 - var_1_4) < 0 ) ? -(var_1_3 - var_1_4) : (var_1_3 - var_1_4))))) : 1) && ((-8 < var_1_4) ? ((var_1_4 != var_1_1) ? (var_1_5 == ((signed char) (((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))) - var_1_7))) : (var_1_5 == ((signed char) var_1_6))) : (var_1_5 == ((signed char) -2)))) && ((var_1_6 >= (var_1_4 >> var_1_3)) ? ((var_1_6 != var_1_1) ? (var_1_8 == ((float) var_1_9)) : 1) : 1) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=2, var_1_9=2] [L93-L94] return (((var_1_2 ? (var_1_1 == ((unsigned long int) ((((var_1_3 - var_1_4) < 0 ) ? -(var_1_3 - var_1_4) : (var_1_3 - var_1_4))))) : 1) && ((-8 < var_1_4) ? ((var_1_4 != var_1_1) ? (var_1_5 == ((signed char) (((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))) - var_1_7))) : (var_1_5 == ((signed char) var_1_6))) : (var_1_5 == ((signed char) -2)))) && ((var_1_6 >= (var_1_4 >> var_1_3)) ? ((var_1_6 != var_1_1) ? (var_1_8 == ((float) var_1_9)) : 1) : 1)) && (((var_1_1 + (var_1_6 / var_1_12)) < var_1_1) ? ((var_1_7 >= last_1_var_1_10) ? (var_1_10 == ((signed char) -32)) : (var_1_10 == ((signed char) var_1_7))) : 1) ; [L103] RET, EXPR property() [L103] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=2, var_1_9=2] [L19] reach_error() VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=127, var_1_1=-125, var_1_2=1, var_1_3=-4294967421, var_1_4=-4294967296, var_1_5=-2, var_1_6=-126, var_1_7=99, var_1_8=2, var_1_9=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.8s, OverallIterations: 11, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 707 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 707 mSDsluCounter, 3224 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2433 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1791 IncrementalHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 791 mSDtfsCounter, 1791 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=10, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 323 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 1267 NumberOfCodeBlocks, 1267 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1058 ConstructedInterpolants, 0 QuantifiedInterpolants, 8354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 223 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 3978/4004 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-03 23:26:31,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_loopvsstraightlinecode_25-while_file-87.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 57aa769afed4a061f728787b55a05b2a082848f9dc6ce06d34092eb1dbdd7a2a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 23:26:33,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 23:26:33,189 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-03 23:26:33,193 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 23:26:33,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 23:26:33,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 23:26:33,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 23:26:33,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 23:26:33,221 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 23:26:33,221 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 23:26:33,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 23:26:33,222 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 23:26:33,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 23:26:33,222 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 23:26:33,222 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 23:26:33,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 23:26:33,223 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 23:26:33,223 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 23:26:33,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 23:26:33,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 23:26:33,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 23:26:33,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 23:26:33,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 23:26:33,224 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 23:26:33,224 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 23:26:33,224 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 23:26:33,224 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 23:26:33,224 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 23:26:33,224 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 23:26:33,224 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 23:26:33,224 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 23:26:33,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 23:26:33,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 23:26:33,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 23:26:33,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 23:26:33,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 23:26:33,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 23:26:33,225 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 23:26:33,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 23:26:33,225 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 23:26:33,225 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 23:26:33,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 23:26:33,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 23:26:33,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 23:26:33,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 23:26:33,226 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 -> 57aa769afed4a061f728787b55a05b2a082848f9dc6ce06d34092eb1dbdd7a2a [2025-03-03 23:26:33,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 23:26:33,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 23:26:33,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 23:26:33,496 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 23:26:33,496 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 23:26:33,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i [2025-03-03 23:26:34,702 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e280fe73c/6fafbf42be5e428bbe340517f70023af/FLAGf774bdc7c [2025-03-03 23:26:34,875 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 23:26:34,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i [2025-03-03 23:26:34,884 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e280fe73c/6fafbf42be5e428bbe340517f70023af/FLAGf774bdc7c [2025-03-03 23:26:35,270 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e280fe73c/6fafbf42be5e428bbe340517f70023af [2025-03-03 23:26:35,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 23:26:35,273 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 23:26:35,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 23:26:35,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 23:26:35,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 23:26:35,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ff1a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35, skipping insertion in model container [2025-03-03 23:26:35,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 23:26:35,391 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_loopvsstraightlinecode_25-while_file-87.i[915,928] [2025-03-03 23:26:35,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 23:26:35,431 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 23:26:35,439 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_loopvsstraightlinecode_25-while_file-87.i[915,928] [2025-03-03 23:26:35,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 23:26:35,462 INFO L204 MainTranslator]: Completed translation [2025-03-03 23:26:35,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35 WrapperNode [2025-03-03 23:26:35,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 23:26:35,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 23:26:35,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 23:26:35,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 23:26:35,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,496 INFO L138 Inliner]: procedures = 27, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 97 [2025-03-03 23:26:35,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 23:26:35,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 23:26:35,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 23:26:35,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 23:26:35,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,529 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 23:26:35,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,539 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 23:26:35,548 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 23:26:35,548 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 23:26:35,548 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 23:26:35,549 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (1/1) ... [2025-03-03 23:26:35,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 23:26:35,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:26:35,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 23:26:35,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 23:26:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 23:26:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 23:26:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 23:26:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 23:26:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 23:26:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 23:26:35,663 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 23:26:35,665 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 23:26:35,940 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-03-03 23:26:35,940 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 23:26:35,945 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 23:26:35,946 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 23:26:35,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:26:35 BoogieIcfgContainer [2025-03-03 23:26:35,946 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 23:26:35,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 23:26:35,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 23:26:35,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 23:26:35,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:26:35" (1/3) ... [2025-03-03 23:26:35,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626eb6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:26:35, skipping insertion in model container [2025-03-03 23:26:35,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:26:35" (2/3) ... [2025-03-03 23:26:35,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626eb6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:26:35, skipping insertion in model container [2025-03-03 23:26:35,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:26:35" (3/3) ... [2025-03-03 23:26:35,952 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-87.i [2025-03-03 23:26:35,961 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 23:26:35,962 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-87.i that has 2 procedures, 48 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 23:26:35,993 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 23:26:36,000 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;@212d730b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 23:26:36,000 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 23:26:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 states have internal predecessors, (42), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-03 23:26:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-03 23:26:36,008 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:36,009 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:36,009 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:36,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash 719588101, now seen corresponding path program 1 times [2025-03-03 23:26:36,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 23:26:36,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290063069] [2025-03-03 23:26:36,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:36,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:26:36,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 23:26:36,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-03 23:26:36,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2025-03-03 23:26:36,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-03 23:26:36,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-03 23:26:36,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:36,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:36,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 23:26:36,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:26:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2025-03-03 23:26:36,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 23:26:36,213 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 23:26:36,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290063069] [2025-03-03 23:26:36,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290063069] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:26:36,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:26:36,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 23:26:36,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817280703] [2025-03-03 23:26:36,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:26:36,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 23:26:36,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 23:26:36,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 23:26:36,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 23:26:36,231 INFO L87 Difference]: Start difference. First operand has 48 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 states have internal predecessors, (42), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 23:26:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:26:36,245 INFO L93 Difference]: Finished difference Result 90 states and 149 transitions. [2025-03-03 23:26:36,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 23:26:36,246 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 92 [2025-03-03 23:26:36,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:26:36,252 INFO L225 Difference]: With dead ends: 90 [2025-03-03 23:26:36,253 INFO L226 Difference]: Without dead ends: 45 [2025-03-03 23:26:36,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 23:26:36,257 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 23:26:36,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 23:26:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-03 23:26:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2025-03-03 23:26:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-03 23:26:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2025-03-03 23:26:36,288 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 92 [2025-03-03 23:26:36,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:26:36,288 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2025-03-03 23:26:36,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 23:26:36,289 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2025-03-03 23:26:36,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-03 23:26:36,301 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:26:36,301 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:26:36,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2025-03-03 23:26:36,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:26:36,502 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:26:36,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:26:36,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1653896125, now seen corresponding path program 1 times [2025-03-03 23:26:36,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 23:26:36,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949091132] [2025-03-03 23:26:36,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:36,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:26:36,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 23:26:36,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-03 23:26:36,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2025-03-03 23:26:36,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-03 23:26:36,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-03 23:26:36,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:36,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:36,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 23:26:36,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:26:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 186 proven. 54 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2025-03-03 23:26:36,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 23:26:37,057 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 23:26:37,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949091132] [2025-03-03 23:26:37,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949091132] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 23:26:37,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2108826742] [2025-03-03 23:26:37,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:26:37,057 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-03 23:26:37,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-03 23:26:37,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-03 23:26:37,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2025-03-03 23:26:37,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-03 23:26:37,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-03 23:26:37,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:26:37,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:26:37,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-03 23:26:37,330 INFO L279 TraceCheckSpWp]: Computing forward predicates...