./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-10.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 432664c2eda1030555a8d42748674a5f8f3357a27417c048e2327859bae46f10 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 03:12:36,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 03:12:36,672 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 03:12:36,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 03:12:36,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 03:12:36,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 03:12:36,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 03:12:36,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 03:12:36,691 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 03:12:36,691 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 03:12:36,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 03:12:36,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 03:12:36,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 03:12:36,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 03:12:36,692 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 03:12:36,692 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 03:12:36,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 03:12:36,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 03:12:36,694 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 -> 432664c2eda1030555a8d42748674a5f8f3357a27417c048e2327859bae46f10 [2025-03-17 03:12:36,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 03:12:36,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 03:12:36,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 03:12:36,930 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 03:12:36,930 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 03:12:36,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-10.i [2025-03-17 03:12:38,106 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7dc426c5/f0f4946f22704e5a8f9acca3335ad5c8/FLAG03a8b9843 [2025-03-17 03:12:38,381 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 03:12:38,382 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-10.i [2025-03-17 03:12:38,393 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7dc426c5/f0f4946f22704e5a8f9acca3335ad5c8/FLAG03a8b9843 [2025-03-17 03:12:38,674 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7dc426c5/f0f4946f22704e5a8f9acca3335ad5c8 [2025-03-17 03:12:38,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 03:12:38,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 03:12:38,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 03:12:38,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 03:12:38,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 03:12:38,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:38,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5964049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38, skipping insertion in model container [2025-03-17 03:12:38,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:38,704 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 03:12:38,809 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_100-while_file-10.i[916,929] [2025-03-17 03:12:38,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 03:12:38,906 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 03:12:38,916 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_100-while_file-10.i[916,929] [2025-03-17 03:12:38,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 03:12:38,982 INFO L204 MainTranslator]: Completed translation [2025-03-17 03:12:38,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38 WrapperNode [2025-03-17 03:12:38,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 03:12:38,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 03:12:38,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 03:12:38,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 03:12:38,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,040 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 288 [2025-03-17 03:12:39,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 03:12:39,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 03:12:39,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 03:12:39,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 03:12:39,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,077 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 03:12:39,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,090 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 03:12:39,115 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 03:12:39,116 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 03:12:39,116 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 03:12:39,117 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (1/1) ... [2025-03-17 03:12:39,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 03:12:39,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 03:12:39,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 03:12:39,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 03:12:39,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 03:12:39,163 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 03:12:39,163 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 03:12:39,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 03:12:39,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 03:12:39,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 03:12:39,223 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 03:12:39,225 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 03:12:39,652 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L200: havoc property_#t~ite25#1;havoc property_#t~bitwise24#1;havoc property_#t~short26#1;havoc property_#t~ite30#1;havoc property_#t~bitwise27#1;havoc property_#t~ite29#1;havoc property_#t~bitwise28#1;havoc property_#t~short31#1; [2025-03-17 03:12:39,688 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2025-03-17 03:12:39,688 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 03:12:39,702 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 03:12:39,702 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 03:12:39,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:12:39 BoogieIcfgContainer [2025-03-17 03:12:39,702 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 03:12:39,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 03:12:39,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 03:12:39,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 03:12:39,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:12:38" (1/3) ... [2025-03-17 03:12:39,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b54e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:12:39, skipping insertion in model container [2025-03-17 03:12:39,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:12:38" (2/3) ... [2025-03-17 03:12:39,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b54e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:12:39, skipping insertion in model container [2025-03-17 03:12:39,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:12:39" (3/3) ... [2025-03-17 03:12:39,709 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-10.i [2025-03-17 03:12:39,718 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 03:12:39,721 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-while_file-10.i that has 2 procedures, 119 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 03:12:39,760 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 03:12:39,768 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;@7a695e81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 03:12:39,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 03:12:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 89 states have internal predecessors, (130), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-17 03:12:39,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-03-17 03:12:39,786 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:12:39,786 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:12:39,787 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:12:39,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:12:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1951576586, now seen corresponding path program 1 times [2025-03-17 03:12:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:12:39,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100585451] [2025-03-17 03:12:39,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:39,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:12:39,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-03-17 03:12:39,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-03-17 03:12:39,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:39,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:12:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2025-03-17 03:12:40,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 03:12:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100585451] [2025-03-17 03:12:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100585451] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 03:12:40,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767241655] [2025-03-17 03:12:40,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:40,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 03:12:40,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 03:12:40,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 03:12:40,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 03:12:40,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-03-17 03:12:40,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-03-17 03:12:40,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:40,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:12:40,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 03:12:40,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 03:12:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2025-03-17 03:12:40,296 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 03:12:40,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767241655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 03:12:40,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 03:12:40,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 03:12:40,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096399080] [2025-03-17 03:12:40,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 03:12:40,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 03:12:40,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 03:12:40,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 03:12:40,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 03:12:40,319 INFO L87 Difference]: Start difference. First operand has 119 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 89 states have internal predecessors, (130), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2025-03-17 03:12:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 03:12:40,358 INFO L93 Difference]: Finished difference Result 235 states and 398 transitions. [2025-03-17 03:12:40,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 03:12:40,362 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) Word has length 189 [2025-03-17 03:12:40,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 03:12:40,366 INFO L225 Difference]: With dead ends: 235 [2025-03-17 03:12:40,367 INFO L226 Difference]: Without dead ends: 117 [2025-03-17 03:12:40,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 03:12:40,373 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 03:12:40,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 03:12:40,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-17 03:12:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-03-17 03:12:40,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 87 states have (on average 1.4482758620689655) internal successors, (126), 87 states have internal predecessors, (126), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-17 03:12:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 182 transitions. [2025-03-17 03:12:40,408 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 182 transitions. Word has length 189 [2025-03-17 03:12:40,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 03:12:40,408 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 182 transitions. [2025-03-17 03:12:40,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2025-03-17 03:12:40,408 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 182 transitions. [2025-03-17 03:12:40,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-03-17 03:12:40,411 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:12:40,411 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:12:40,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 03:12:40,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 03:12:40,612 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:12:40,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:12:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash 361074378, now seen corresponding path program 1 times [2025-03-17 03:12:40,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:12:40,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507565580] [2025-03-17 03:12:40,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:40,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:12:40,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-03-17 03:12:40,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-03-17 03:12:40,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:40,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:12:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-03-17 03:12:40,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 03:12:40,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507565580] [2025-03-17 03:12:40,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507565580] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 03:12:40,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 03:12:40,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 03:12:40,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297930310] [2025-03-17 03:12:40,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 03:12:40,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 03:12:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 03:12:40,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 03:12:40,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 03:12:40,976 INFO L87 Difference]: Start difference. First operand 117 states and 182 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-03-17 03:12:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 03:12:41,004 INFO L93 Difference]: Finished difference Result 233 states and 363 transitions. [2025-03-17 03:12:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 03:12:41,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 189 [2025-03-17 03:12:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 03:12:41,007 INFO L225 Difference]: With dead ends: 233 [2025-03-17 03:12:41,007 INFO L226 Difference]: Without dead ends: 117 [2025-03-17 03:12:41,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 03:12:41,009 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 03:12:41,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 03:12:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-17 03:12:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-03-17 03:12:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 87 states have internal predecessors, (125), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-17 03:12:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 181 transitions. [2025-03-17 03:12:41,018 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 181 transitions. Word has length 189 [2025-03-17 03:12:41,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 03:12:41,019 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 181 transitions. [2025-03-17 03:12:41,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-03-17 03:12:41,020 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 181 transitions. [2025-03-17 03:12:41,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-03-17 03:12:41,022 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:12:41,022 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:12:41,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 03:12:41,022 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:12:41,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:12:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1322688395, now seen corresponding path program 1 times [2025-03-17 03:12:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:12:41,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350254340] [2025-03-17 03:12:41,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:12:41,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-03-17 03:12:41,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-03-17 03:12:41,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:41,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:12:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-03-17 03:12:41,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 03:12:41,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350254340] [2025-03-17 03:12:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350254340] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 03:12:41,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 03:12:41,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 03:12:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852803607] [2025-03-17 03:12:41,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 03:12:41,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 03:12:41,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 03:12:41,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 03:12:41,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 03:12:41,399 INFO L87 Difference]: Start difference. First operand 117 states and 181 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-03-17 03:12:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 03:12:41,641 INFO L93 Difference]: Finished difference Result 406 states and 629 transitions. [2025-03-17 03:12:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 03:12:41,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 189 [2025-03-17 03:12:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 03:12:41,643 INFO L225 Difference]: With dead ends: 406 [2025-03-17 03:12:41,643 INFO L226 Difference]: Without dead ends: 290 [2025-03-17 03:12:41,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 03:12:41,644 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 255 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 03:12:41,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 527 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 03:12:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2025-03-17 03:12:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 265. [2025-03-17 03:12:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 206 states have (on average 1.4563106796116505) internal successors, (300), 206 states have internal predecessors, (300), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-03-17 03:12:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 412 transitions. [2025-03-17 03:12:41,682 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 412 transitions. Word has length 189 [2025-03-17 03:12:41,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 03:12:41,682 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 412 transitions. [2025-03-17 03:12:41,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-03-17 03:12:41,683 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 412 transitions. [2025-03-17 03:12:41,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-03-17 03:12:41,685 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:12:41,685 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:12:41,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 03:12:41,686 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:12:41,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:12:41,686 INFO L85 PathProgramCache]: Analyzing trace with hash 298010592, now seen corresponding path program 1 times [2025-03-17 03:12:41,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:12:41,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050323428] [2025-03-17 03:12:41,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:41,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:12:41,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-03-17 03:12:41,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-03-17 03:12:41,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:41,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:12:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-03-17 03:12:42,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 03:12:42,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050323428] [2025-03-17 03:12:42,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050323428] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 03:12:42,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 03:12:42,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 03:12:42,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115640253] [2025-03-17 03:12:42,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 03:12:42,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 03:12:42,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 03:12:42,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 03:12:42,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 03:12:42,239 INFO L87 Difference]: Start difference. First operand 265 states and 412 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-03-17 03:12:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 03:12:42,582 INFO L93 Difference]: Finished difference Result 875 states and 1352 transitions. [2025-03-17 03:12:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 03:12:42,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2025-03-17 03:12:42,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 03:12:42,586 INFO L225 Difference]: With dead ends: 875 [2025-03-17 03:12:42,587 INFO L226 Difference]: Without dead ends: 611 [2025-03-17 03:12:42,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 03:12:42,588 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 242 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 03:12:42,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 495 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 03:12:42,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2025-03-17 03:12:42,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 443. [2025-03-17 03:12:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 334 states have (on average 1.4251497005988023) internal successors, (476), 336 states have internal predecessors, (476), 104 states have call successors, (104), 4 states have call predecessors, (104), 4 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 03:12:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 684 transitions. [2025-03-17 03:12:42,653 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 684 transitions. Word has length 191 [2025-03-17 03:12:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 03:12:42,653 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 684 transitions. [2025-03-17 03:12:42,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-03-17 03:12:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 684 transitions. [2025-03-17 03:12:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-03-17 03:12:42,655 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:12:42,655 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:12:42,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 03:12:42,656 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:12:42,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:12:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash -500951040, now seen corresponding path program 1 times [2025-03-17 03:12:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:12:42,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046109336] [2025-03-17 03:12:42,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:42,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:12:42,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-03-17 03:12:42,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-03-17 03:12:42,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:42,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:12:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2025-03-17 03:12:42,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 03:12:42,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046109336] [2025-03-17 03:12:42,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046109336] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 03:12:42,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946744963] [2025-03-17 03:12:42,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:42,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 03:12:42,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 03:12:42,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 03:12:42,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 03:12:42,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-03-17 03:12:43,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-03-17 03:12:43,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:43,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:12:43,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 03:12:43,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 03:12:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 231 proven. 75 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2025-03-17 03:12:43,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 03:12:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2025-03-17 03:12:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946744963] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 03:12:43,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 03:12:43,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-03-17 03:12:43,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410688477] [2025-03-17 03:12:43,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 03:12:43,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 03:12:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 03:12:43,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 03:12:43,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 03:12:43,624 INFO L87 Difference]: Start difference. First operand 443 states and 684 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2025-03-17 03:12:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 03:12:43,820 INFO L93 Difference]: Finished difference Result 909 states and 1387 transitions. [2025-03-17 03:12:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 03:12:43,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 191 [2025-03-17 03:12:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 03:12:43,825 INFO L225 Difference]: With dead ends: 909 [2025-03-17 03:12:43,825 INFO L226 Difference]: Without dead ends: 467 [2025-03-17 03:12:43,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2025-03-17 03:12:43,827 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 97 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 03:12:43,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 351 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 03:12:43,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2025-03-17 03:12:43,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2025-03-17 03:12:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 346 states have (on average 1.384393063583815) internal successors, (479), 348 states have internal predecessors, (479), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 03:12:43,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 687 transitions. [2025-03-17 03:12:43,868 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 687 transitions. Word has length 191 [2025-03-17 03:12:43,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 03:12:43,869 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 687 transitions. [2025-03-17 03:12:43,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2025-03-17 03:12:43,870 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 687 transitions. [2025-03-17 03:12:43,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-03-17 03:12:43,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:12:43,872 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:12:43,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 03:12:44,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 03:12:44,075 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:12:44,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:12:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash -136100608, now seen corresponding path program 1 times [2025-03-17 03:12:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:12:44,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929490478] [2025-03-17 03:12:44,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:44,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:12:44,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-17 03:12:44,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-17 03:12:44,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:44,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 03:12:44,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882024136] [2025-03-17 03:12:44,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:44,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 03:12:44,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 03:12:44,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 03:12:44,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 03:12:44,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-17 03:12:44,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-17 03:12:44,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:44,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:12:44,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-03-17 03:12:44,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 03:12:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 1015 proven. 330 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2025-03-17 03:12:48,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 03:12:52,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 03:12:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929490478] [2025-03-17 03:12:52,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 03:12:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882024136] [2025-03-17 03:12:52,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882024136] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 03:12:52,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-17 03:12:52,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2025-03-17 03:12:52,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936877503] [2025-03-17 03:12:52,363 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-17 03:12:52,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-17 03:12:52,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 03:12:52,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-17 03:12:52,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1494, Unknown=0, NotChecked=0, Total=1806 [2025-03-17 03:12:52,365 INFO L87 Difference]: Start difference. First operand 459 states and 687 transitions. Second operand has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 28 states have internal predecessors, (88), 9 states have call successors, (28), 9 states have call predecessors, (28), 12 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) [2025-03-17 03:12:54,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 03:12:54,703 INFO L93 Difference]: Finished difference Result 1114 states and 1603 transitions. [2025-03-17 03:12:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-17 03:12:54,703 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 28 states have internal predecessors, (88), 9 states have call successors, (28), 9 states have call predecessors, (28), 12 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) Word has length 192 [2025-03-17 03:12:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 03:12:54,707 INFO L225 Difference]: With dead ends: 1114 [2025-03-17 03:12:54,707 INFO L226 Difference]: Without dead ends: 656 [2025-03-17 03:12:54,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=685, Invalid=2621, Unknown=0, NotChecked=0, Total=3306 [2025-03-17 03:12:54,709 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 525 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 03:12:54,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1603 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 03:12:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2025-03-17 03:12:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 535. [2025-03-17 03:12:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 406 states have (on average 1.3374384236453203) internal successors, (543), 408 states have internal predecessors, (543), 104 states have call successors, (104), 24 states have call predecessors, (104), 24 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 03:12:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 751 transitions. [2025-03-17 03:12:54,742 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 751 transitions. Word has length 192 [2025-03-17 03:12:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 03:12:54,742 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 751 transitions. [2025-03-17 03:12:54,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 28 states have internal predecessors, (88), 9 states have call successors, (28), 9 states have call predecessors, (28), 12 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) [2025-03-17 03:12:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 751 transitions. [2025-03-17 03:12:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-03-17 03:12:54,744 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:12:54,744 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:12:54,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 03:12:54,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 03:12:54,949 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:12:54,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:12:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1648627969, now seen corresponding path program 1 times [2025-03-17 03:12:54,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:12:54,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214569211] [2025-03-17 03:12:54,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:54,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:12:54,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-17 03:12:55,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-17 03:12:55,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:55,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 03:12:55,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601413308] [2025-03-17 03:12:55,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:12:55,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 03:12:55,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 03:12:55,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 03:12:55,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 03:12:55,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-17 03:12:55,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-17 03:12:55,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:12:55,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:12:55,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-17 03:12:55,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 03:12:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 1004 proven. 141 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2025-03-17 03:12:56,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 03:12:58,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 03:12:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214569211] [2025-03-17 03:12:58,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 03:12:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601413308] [2025-03-17 03:12:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601413308] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 03:12:58,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-17 03:12:58,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2025-03-17 03:12:58,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738976866] [2025-03-17 03:12:58,667 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-17 03:12:58,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-17 03:12:58,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 03:12:58,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-17 03:12:58,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2025-03-17 03:12:58,669 INFO L87 Difference]: Start difference. First operand 535 states and 751 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 22 states have internal predecessors, (79), 6 states have call successors, (28), 6 states have call predecessors, (28), 9 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2025-03-17 03:13:01,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-03-17 03:13:01,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 03:13:01,273 INFO L93 Difference]: Finished difference Result 1266 states and 1796 transitions. [2025-03-17 03:13:01,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-17 03:13:01,274 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 22 states have internal predecessors, (79), 6 states have call successors, (28), 6 states have call predecessors, (28), 9 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 192 [2025-03-17 03:13:01,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 03:13:01,280 INFO L225 Difference]: With dead ends: 1266 [2025-03-17 03:13:01,280 INFO L226 Difference]: Without dead ends: 1052 [2025-03-17 03:13:01,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=332, Invalid=1150, Unknown=0, NotChecked=0, Total=1482 [2025-03-17 03:13:01,282 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 534 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-17 03:13:01,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1611 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1323 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2025-03-17 03:13:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2025-03-17 03:13:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 595. [2025-03-17 03:13:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.367170626349892) internal successors, (633), 464 states have internal predecessors, (633), 108 states have call successors, (108), 23 states have call predecessors, (108), 23 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2025-03-17 03:13:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 849 transitions. [2025-03-17 03:13:01,341 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 849 transitions. Word has length 192 [2025-03-17 03:13:01,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 03:13:01,343 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 849 transitions. [2025-03-17 03:13:01,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 22 states have internal predecessors, (79), 6 states have call successors, (28), 6 states have call predecessors, (28), 9 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2025-03-17 03:13:01,343 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 849 transitions. [2025-03-17 03:13:01,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-03-17 03:13:01,344 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:13:01,344 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:13:01,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 03:13:01,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 03:13:01,545 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:13:01,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:13:01,546 INFO L85 PathProgramCache]: Analyzing trace with hash -141076160, now seen corresponding path program 1 times [2025-03-17 03:13:01,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:13:01,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078386058] [2025-03-17 03:13:01,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:13:01,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:13:01,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-17 03:13:01,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-17 03:13:01,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:13:01,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:13:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2025-03-17 03:13:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 03:13:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078386058] [2025-03-17 03:13:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078386058] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 03:13:01,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 03:13:01,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 03:13:01,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129402252] [2025-03-17 03:13:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 03:13:01,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 03:13:01,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 03:13:01,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 03:13:01,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 03:13:01,603 INFO L87 Difference]: Start difference. First operand 595 states and 849 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-03-17 03:13:01,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 03:13:01,689 INFO L93 Difference]: Finished difference Result 1719 states and 2450 transitions. [2025-03-17 03:13:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 03:13:01,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2025-03-17 03:13:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 03:13:01,694 INFO L225 Difference]: With dead ends: 1719 [2025-03-17 03:13:01,695 INFO L226 Difference]: Without dead ends: 1125 [2025-03-17 03:13:01,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 03:13:01,696 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 173 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 03:13:01,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 452 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 03:13:01,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2025-03-17 03:13:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 590. [2025-03-17 03:13:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 458 states have (on average 1.3624454148471616) internal successors, (624), 459 states have internal predecessors, (624), 108 states have call successors, (108), 23 states have call predecessors, (108), 23 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2025-03-17 03:13:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 840 transitions. [2025-03-17 03:13:01,744 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 840 transitions. Word has length 192 [2025-03-17 03:13:01,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 03:13:01,744 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 840 transitions. [2025-03-17 03:13:01,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2025-03-17 03:13:01,744 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 840 transitions. [2025-03-17 03:13:01,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2025-03-17 03:13:01,745 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:13:01,746 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:13:01,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 03:13:01,746 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:13:01,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:13:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1243800433, now seen corresponding path program 1 times [2025-03-17 03:13:01,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:13:01,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113838142] [2025-03-17 03:13:01,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:13:01,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:13:01,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-03-17 03:13:01,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-03-17 03:13:01,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:13:01,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 03:13:01,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63266644] [2025-03-17 03:13:01,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:13:01,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 03:13:01,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 03:13:01,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 03:13:01,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 03:13:01,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-03-17 03:13:01,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-03-17 03:13:01,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:13:01,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:13:01,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-03-17 03:13:01,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 03:13:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 910 proven. 381 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2025-03-17 03:13:04,471 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 03:13:40,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 03:13:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113838142] [2025-03-17 03:13:40,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 03:13:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63266644] [2025-03-17 03:13:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63266644] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 03:13:40,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-17 03:13:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2025-03-17 03:13:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757508939] [2025-03-17 03:13:40,458 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-17 03:13:40,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-17 03:13:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 03:13:40,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-17 03:13:40,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2025-03-17 03:13:40,459 INFO L87 Difference]: Start difference. First operand 590 states and 840 transitions. Second operand has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 30 states have internal predecessors, (89), 9 states have call successors, (28), 9 states have call predecessors, (28), 12 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) [2025-03-17 03:13:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 03:13:42,181 INFO L93 Difference]: Finished difference Result 1373 states and 1964 transitions. [2025-03-17 03:13:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-03-17 03:13:42,182 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 30 states have internal predecessors, (89), 9 states have call successors, (28), 9 states have call predecessors, (28), 12 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) Word has length 193 [2025-03-17 03:13:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 03:13:42,188 INFO L225 Difference]: With dead ends: 1373 [2025-03-17 03:13:42,188 INFO L226 Difference]: Without dead ends: 1120 [2025-03-17 03:13:42,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=584, Invalid=2278, Unknown=0, NotChecked=0, Total=2862 [2025-03-17 03:13:42,190 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 891 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 03:13:42,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1869 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 03:13:42,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2025-03-17 03:13:42,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 954. [2025-03-17 03:13:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 751 states have (on average 1.351531291611185) internal successors, (1015), 753 states have internal predecessors, (1015), 160 states have call successors, (160), 42 states have call predecessors, (160), 42 states have return successors, (160), 158 states have call predecessors, (160), 160 states have call successors, (160) [2025-03-17 03:13:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1335 transitions. [2025-03-17 03:13:42,246 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1335 transitions. Word has length 193 [2025-03-17 03:13:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 03:13:42,247 INFO L471 AbstractCegarLoop]: Abstraction has 954 states and 1335 transitions. [2025-03-17 03:13:42,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 30 states have internal predecessors, (89), 9 states have call successors, (28), 9 states have call predecessors, (28), 12 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) [2025-03-17 03:13:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1335 transitions. [2025-03-17 03:13:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2025-03-17 03:13:42,251 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:13:42,251 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:13:42,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 03:13:42,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 03:13:42,454 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:13:42,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:13:42,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1538639502, now seen corresponding path program 1 times [2025-03-17 03:13:42,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:13:42,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792332691] [2025-03-17 03:13:42,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:13:42,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:13:42,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-03-17 03:13:42,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-03-17 03:13:42,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:13:42,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 03:13:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514151414] [2025-03-17 03:13:42,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:13:42,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 03:13:42,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 03:13:42,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 03:13:42,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 03:13:42,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-03-17 03:13:42,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-03-17 03:13:42,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:13:42,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:13:42,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-03-17 03:13:42,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 03:13:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 1099 proven. 255 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2025-03-17 03:13:44,905 INFO L312 TraceCheckSpWp]: Computing backward predicates...