./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-79.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-79.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 72bf3c0845cdd2bb0ceb7773d767081845ae984de3bbd8e14ca740b1ff59160d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:47:40,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:47:41,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:47:41,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:47:41,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:47:41,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:47:41,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:47:41,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:47:41,068 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:47:41,068 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:47:41,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:47:41,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:47:41,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:47:41,069 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:47:41,069 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:47:41,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:47:41,070 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:47:41,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:47:41,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:47:41,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:47:41,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:47:41,071 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:47:41,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:47:41,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:47:41,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:47:41,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:47:41,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:47:41,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:47:41,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:47:41,071 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 -> 72bf3c0845cdd2bb0ceb7773d767081845ae984de3bbd8e14ca740b1ff59160d [2025-03-08 15:47:41,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:47:41,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:47:41,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:47:41,320 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:47:41,320 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:47:41,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-79.i [2025-03-08 15:47:42,505 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d0ad678/01750e90f86a499bbcbecd5500dd4ee9/FLAG30211da87 [2025-03-08 15:47:42,813 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:47:42,813 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-79.i [2025-03-08 15:47:42,824 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d0ad678/01750e90f86a499bbcbecd5500dd4ee9/FLAG30211da87 [2025-03-08 15:47:42,835 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d0ad678/01750e90f86a499bbcbecd5500dd4ee9 [2025-03-08 15:47:42,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:47:42,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:47:42,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:47:42,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:47:42,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:47:42,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:47:42" (1/1) ... [2025-03-08 15:47:42,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f39d194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:42, skipping insertion in model container [2025-03-08 15:47:42,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:47:42" (1/1) ... [2025-03-08 15:47:42,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:47:43,010 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-79.i[916,929] [2025-03-08 15:47:43,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:47:43,276 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:47:43,286 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-79.i[916,929] [2025-03-08 15:47:43,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:47:43,392 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:47:43,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43 WrapperNode [2025-03-08 15:47:43,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:47:43,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:47:43,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:47:43,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:47:43,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,493 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 751 [2025-03-08 15:47:43,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:47:43,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:47:43,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:47:43,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:47:43,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,608 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]. [2025-03-08 15:47:43,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,652 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:47:43,691 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:47:43,691 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:47:43,691 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:47:43,692 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (1/1) ... [2025-03-08 15:47:43,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:47:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:43,720 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) [2025-03-08 15:47:43,725 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 [2025-03-08 15:47:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:47:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:47:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:47:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:47:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:47:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:47:43,840 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:47:43,842 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:47:44,709 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L614: havoc property_#t~bitwise49#1;havoc property_#t~ite57#1;havoc property_#t~bitwise50#1;havoc property_#t~bitwise51#1;havoc property_#t~ite56#1;havoc property_#t~ite55#1;havoc property_#t~bitwise52#1;havoc property_#t~bitwise53#1;havoc property_#t~bitwise54#1;havoc property_#t~short58#1;havoc property_#t~ite60#1;havoc property_#t~bitwise59#1;havoc property_#t~short61#1;havoc property_#t~ite64#1;havoc property_#t~ite63#1;havoc property_#t~bitwise62#1;havoc property_#t~short65#1;havoc property_#t~ite67#1;havoc property_#t~bitwise66#1;havoc property_#t~short68#1; [2025-03-08 15:47:44,816 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2025-03-08 15:47:44,816 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:47:44,845 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:47:44,845 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:47:44,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:47:44 BoogieIcfgContainer [2025-03-08 15:47:44,845 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:47:44,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:47:44,849 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:47:44,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:47:44,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:47:42" (1/3) ... [2025-03-08 15:47:44,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1ca5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:47:44, skipping insertion in model container [2025-03-08 15:47:44,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:47:43" (2/3) ... [2025-03-08 15:47:44,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1ca5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:47:44, skipping insertion in model container [2025-03-08 15:47:44,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:47:44" (3/3) ... [2025-03-08 15:47:44,854 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-79.i [2025-03-08 15:47:44,864 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:47:44,866 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-79.i that has 2 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:47:44,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:47:44,931 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;@25f68fca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:47:44,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:47:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 237 states have (on average 1.5654008438818565) internal successors, (371), 238 states have internal predecessors, (371), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-08 15:47:44,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2025-03-08 15:47:44,957 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:44,958 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:47:44,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:44,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash 312881004, now seen corresponding path program 1 times [2025-03-08 15:47:44,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:44,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217158382] [2025-03-08 15:47:44,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:44,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:45,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 437 statements into 1 equivalence classes. [2025-03-08 15:47:45,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 437 of 437 statements. [2025-03-08 15:47:45,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:45,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2025-03-08 15:47:45,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:45,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217158382] [2025-03-08 15:47:45,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217158382] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:47:45,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479232166] [2025-03-08 15:47:45,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:45,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:45,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:45,545 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) [2025-03-08 15:47:45,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 15:47:45,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 437 statements into 1 equivalence classes. [2025-03-08 15:47:45,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 437 of 437 statements. [2025-03-08 15:47:45,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:45,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:45,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:47:45,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:47:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2025-03-08 15:47:45,924 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:47:45,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479232166] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:45,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:47:45,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:47:45,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607529553] [2025-03-08 15:47:45,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:45,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:47:45,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:45,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:47:45,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:47:45,950 INFO L87 Difference]: Start difference. First operand has 302 states, 237 states have (on average 1.5654008438818565) internal successors, (371), 238 states have internal predecessors, (371), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2025-03-08 15:47:46,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:46,021 INFO L93 Difference]: Finished difference Result 594 states and 1041 transitions. [2025-03-08 15:47:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:47:46,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) Word has length 437 [2025-03-08 15:47:46,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:46,033 INFO L225 Difference]: With dead ends: 594 [2025-03-08 15:47:46,034 INFO L226 Difference]: Without dead ends: 295 [2025-03-08 15:47:46,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:47:46,042 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:46,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 466 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:47:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2025-03-08 15:47:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2025-03-08 15:47:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 231 states have (on average 1.5541125541125542) internal successors, (359), 231 states have internal predecessors, (359), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-08 15:47:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 483 transitions. [2025-03-08 15:47:46,097 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 483 transitions. Word has length 437 [2025-03-08 15:47:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:46,097 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 483 transitions. [2025-03-08 15:47:46,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2025-03-08 15:47:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 483 transitions. [2025-03-08 15:47:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2025-03-08 15:47:46,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:46,103 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:47:46,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 15:47:46,304 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 [2025-03-08 15:47:46,304 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:46,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:46,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2001566094, now seen corresponding path program 1 times [2025-03-08 15:47:46,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:46,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531628596] [2025-03-08 15:47:46,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:46,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:46,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 437 statements into 1 equivalence classes. [2025-03-08 15:47:46,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 437 of 437 statements. [2025-03-08 15:47:46,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:46,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:47:46,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:46,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531628596] [2025-03-08 15:47:46,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531628596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:46,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:47:46,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:47:46,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310414202] [2025-03-08 15:47:46,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:46,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:47:46,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:46,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:47:46,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:47:46,925 INFO L87 Difference]: Start difference. First operand 295 states and 483 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:47,407 INFO L93 Difference]: Finished difference Result 1033 states and 1691 transitions. [2025-03-08 15:47:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:47:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 437 [2025-03-08 15:47:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:47,419 INFO L225 Difference]: With dead ends: 1033 [2025-03-08 15:47:47,420 INFO L226 Difference]: Without dead ends: 741 [2025-03-08 15:47:47,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:47:47,422 INFO L435 NwaCegarLoop]: 746 mSDtfsCounter, 683 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:47,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1581 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 15:47:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2025-03-08 15:47:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 736. [2025-03-08 15:47:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 602 states have (on average 1.5365448504983388) internal successors, (925), 603 states have internal predecessors, (925), 130 states have call successors, (130), 3 states have call predecessors, (130), 3 states have return successors, (130), 129 states have call predecessors, (130), 130 states have call successors, (130) [2025-03-08 15:47:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1185 transitions. [2025-03-08 15:47:47,529 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1185 transitions. Word has length 437 [2025-03-08 15:47:47,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:47,530 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 1185 transitions. [2025-03-08 15:47:47,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1185 transitions. [2025-03-08 15:47:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2025-03-08 15:47:47,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:47,546 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:47:47,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:47:47,547 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:47,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:47,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1881293043, now seen corresponding path program 1 times [2025-03-08 15:47:47,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:47,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285606131] [2025-03-08 15:47:47,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:47,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:47,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 437 statements into 1 equivalence classes. [2025-03-08 15:47:47,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 437 of 437 statements. [2025-03-08 15:47:47,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:47,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:47:47,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:47,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285606131] [2025-03-08 15:47:47,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285606131] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:47,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:47:47,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:47:47,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555823367] [2025-03-08 15:47:47,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:47,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:47:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:47,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:47:47,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:47:47,912 INFO L87 Difference]: Start difference. First operand 736 states and 1185 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:48,044 INFO L93 Difference]: Finished difference Result 1796 states and 2891 transitions. [2025-03-08 15:47:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:47:48,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 437 [2025-03-08 15:47:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:48,052 INFO L225 Difference]: With dead ends: 1796 [2025-03-08 15:47:48,052 INFO L226 Difference]: Without dead ends: 1063 [2025-03-08 15:47:48,054 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 [2025-03-08 15:47:48,054 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 254 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:48,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 929 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:47:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2025-03-08 15:47:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 922. [2025-03-08 15:47:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 781 states have (on average 1.558258642765685) internal successors, (1217), 783 states have internal predecessors, (1217), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2025-03-08 15:47:48,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1489 transitions. [2025-03-08 15:47:48,139 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1489 transitions. Word has length 437 [2025-03-08 15:47:48,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:48,140 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1489 transitions. [2025-03-08 15:47:48,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:48,140 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1489 transitions. [2025-03-08 15:47:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2025-03-08 15:47:48,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:48,145 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:47:48,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:47:48,145 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:48,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:48,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2111804340, now seen corresponding path program 1 times [2025-03-08 15:47:48,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:48,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140988516] [2025-03-08 15:47:48,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:48,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:48,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 438 statements into 1 equivalence classes. [2025-03-08 15:47:48,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 438 of 438 statements. [2025-03-08 15:47:48,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:48,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:47:48,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:48,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140988516] [2025-03-08 15:47:48,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140988516] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:48,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:47:48,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:47:48,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663008993] [2025-03-08 15:47:48,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:48,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:47:48,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:48,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:47:48,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:47:48,395 INFO L87 Difference]: Start difference. First operand 922 states and 1489 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:48,501 INFO L93 Difference]: Finished difference Result 1994 states and 3225 transitions. [2025-03-08 15:47:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:47:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 438 [2025-03-08 15:47:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:48,510 INFO L225 Difference]: With dead ends: 1994 [2025-03-08 15:47:48,511 INFO L226 Difference]: Without dead ends: 1075 [2025-03-08 15:47:48,513 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 [2025-03-08 15:47:48,514 INFO L435 NwaCegarLoop]: 644 mSDtfsCounter, 425 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:48,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 856 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:47:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2025-03-08 15:47:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 906. [2025-03-08 15:47:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 765 states have (on average 1.4980392156862745) internal successors, (1146), 767 states have internal predecessors, (1146), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2025-03-08 15:47:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1418 transitions. [2025-03-08 15:47:48,609 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1418 transitions. Word has length 438 [2025-03-08 15:47:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:48,609 INFO L471 AbstractCegarLoop]: Abstraction has 906 states and 1418 transitions. [2025-03-08 15:47:48,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1418 transitions. [2025-03-08 15:47:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2025-03-08 15:47:48,615 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:48,615 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:47:48,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 15:47:48,615 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:48,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash -620451471, now seen corresponding path program 1 times [2025-03-08 15:47:48,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:48,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112449688] [2025-03-08 15:47:48,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:48,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:48,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-03-08 15:47:48,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-03-08 15:47:48,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:48,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:47:49,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112449688] [2025-03-08 15:47:49,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112449688] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:49,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:47:49,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:47:49,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157179883] [2025-03-08 15:47:49,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:49,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:47:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:49,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:47:49,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:47:49,251 INFO L87 Difference]: Start difference. First operand 906 states and 1418 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:49,691 INFO L93 Difference]: Finished difference Result 1839 states and 2883 transitions. [2025-03-08 15:47:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:47:49,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 439 [2025-03-08 15:47:49,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:49,696 INFO L225 Difference]: With dead ends: 1839 [2025-03-08 15:47:49,696 INFO L226 Difference]: Without dead ends: 936 [2025-03-08 15:47:49,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:47:49,699 INFO L435 NwaCegarLoop]: 754 mSDtfsCounter, 550 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:49,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2040 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:47:49,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2025-03-08 15:47:49,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 887. [2025-03-08 15:47:49,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 746 states have (on average 1.467828418230563) internal successors, (1095), 748 states have internal predecessors, (1095), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2025-03-08 15:47:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1367 transitions. [2025-03-08 15:47:49,771 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1367 transitions. Word has length 439 [2025-03-08 15:47:49,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:49,772 INFO L471 AbstractCegarLoop]: Abstraction has 887 states and 1367 transitions. [2025-03-08 15:47:49,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1367 transitions. [2025-03-08 15:47:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2025-03-08 15:47:49,779 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:49,779 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:47:49,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 15:47:49,782 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:49,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2097431994, now seen corresponding path program 1 times [2025-03-08 15:47:49,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:49,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020789366] [2025-03-08 15:47:49,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:49,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:49,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 440 statements into 1 equivalence classes. [2025-03-08 15:47:50,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 440 of 440 statements. [2025-03-08 15:47:50,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:50,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:47:50,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:50,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020789366] [2025-03-08 15:47:50,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020789366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:50,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:47:50,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:47:50,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585678480] [2025-03-08 15:47:50,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:50,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:47:50,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:50,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:47:50,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:47:50,994 INFO L87 Difference]: Start difference. First operand 887 states and 1367 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:51,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:51,455 INFO L93 Difference]: Finished difference Result 2521 states and 3889 transitions. [2025-03-08 15:47:51,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:47:51,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 440 [2025-03-08 15:47:51,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:51,463 INFO L225 Difference]: With dead ends: 2521 [2025-03-08 15:47:51,464 INFO L226 Difference]: Without dead ends: 1637 [2025-03-08 15:47:51,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:47:51,466 INFO L435 NwaCegarLoop]: 443 mSDtfsCounter, 376 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:51,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1288 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 15:47:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2025-03-08 15:47:51,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1583. [2025-03-08 15:47:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1379 states have (on average 1.495286439448876) internal successors, (2062), 1381 states have internal predecessors, (2062), 198 states have call successors, (198), 5 states have call predecessors, (198), 5 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2025-03-08 15:47:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2458 transitions. [2025-03-08 15:47:51,583 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2458 transitions. Word has length 440 [2025-03-08 15:47:51,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:51,583 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2458 transitions. [2025-03-08 15:47:51,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2458 transitions. [2025-03-08 15:47:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2025-03-08 15:47:51,590 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:51,590 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:47:51,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 15:47:51,590 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:51,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1403856618, now seen corresponding path program 1 times [2025-03-08 15:47:51,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:51,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819413339] [2025-03-08 15:47:51,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:51,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:51,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 441 statements into 1 equivalence classes. [2025-03-08 15:47:52,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 441 of 441 statements. [2025-03-08 15:47:52,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:52,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:47:52,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:52,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819413339] [2025-03-08 15:47:52,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819413339] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:52,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:47:52,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:47:52,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66628302] [2025-03-08 15:47:52,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:52,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:47:52,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:52,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:47:52,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:47:52,514 INFO L87 Difference]: Start difference. First operand 1583 states and 2458 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:52,894 INFO L93 Difference]: Finished difference Result 3082 states and 4758 transitions. [2025-03-08 15:47:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:47:52,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 441 [2025-03-08 15:47:52,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:52,902 INFO L225 Difference]: With dead ends: 3082 [2025-03-08 15:47:52,902 INFO L226 Difference]: Without dead ends: 1637 [2025-03-08 15:47:52,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:47:52,906 INFO L435 NwaCegarLoop]: 443 mSDtfsCounter, 375 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:52,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1749 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:47:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2025-03-08 15:47:52,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1583. [2025-03-08 15:47:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1379 states have (on average 1.4880348078317622) internal successors, (2052), 1381 states have internal predecessors, (2052), 198 states have call successors, (198), 5 states have call predecessors, (198), 5 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2025-03-08 15:47:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2448 transitions. [2025-03-08 15:47:52,995 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2448 transitions. Word has length 441 [2025-03-08 15:47:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:52,996 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2448 transitions. [2025-03-08 15:47:52,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2448 transitions. [2025-03-08 15:47:53,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2025-03-08 15:47:53,001 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:53,001 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:47:53,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 15:47:53,001 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:53,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:53,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1992644146, now seen corresponding path program 1 times [2025-03-08 15:47:53,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:53,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735894869] [2025-03-08 15:47:53,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:53,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:53,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 443 statements into 1 equivalence classes. [2025-03-08 15:47:53,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 443 of 443 statements. [2025-03-08 15:47:53,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:53,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:47:53,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:53,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735894869] [2025-03-08 15:47:53,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735894869] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:47:53,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:47:53,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:47:53,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651453487] [2025-03-08 15:47:53,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:47:53,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:47:53,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:53,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:47:53,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:47:53,332 INFO L87 Difference]: Start difference. First operand 1583 states and 2448 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:53,683 INFO L93 Difference]: Finished difference Result 3070 states and 4728 transitions. [2025-03-08 15:47:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:47:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 443 [2025-03-08 15:47:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:53,692 INFO L225 Difference]: With dead ends: 3070 [2025-03-08 15:47:53,692 INFO L226 Difference]: Without dead ends: 1623 [2025-03-08 15:47:53,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:47:53,696 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 385 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:53,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1766 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:47:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2025-03-08 15:47:53,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1577. [2025-03-08 15:47:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1373 states have (on average 1.484340859431901) internal successors, (2038), 1375 states have internal predecessors, (2038), 198 states have call successors, (198), 5 states have call predecessors, (198), 5 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2025-03-08 15:47:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2434 transitions. [2025-03-08 15:47:53,792 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2434 transitions. Word has length 443 [2025-03-08 15:47:53,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:53,793 INFO L471 AbstractCegarLoop]: Abstraction has 1577 states and 2434 transitions. [2025-03-08 15:47:53,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:47:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2434 transitions. [2025-03-08 15:47:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2025-03-08 15:47:53,797 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:53,798 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:47:53,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 15:47:53,798 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:53,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:53,799 INFO L85 PathProgramCache]: Analyzing trace with hash -87812109, now seen corresponding path program 1 times [2025-03-08 15:47:53,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:53,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350251073] [2025-03-08 15:47:53,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:53,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:53,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 443 statements into 1 equivalence classes. [2025-03-08 15:47:55,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 443 of 443 statements. [2025-03-08 15:47:55,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:55,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 27 proven. 156 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2025-03-08 15:47:55,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:55,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350251073] [2025-03-08 15:47:55,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350251073] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:47:55,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548521854] [2025-03-08 15:47:55,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:55,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:55,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:55,966 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) [2025-03-08 15:47:55,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 15:47:56,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 443 statements into 1 equivalence classes. [2025-03-08 15:47:56,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 443 of 443 statements. [2025-03-08 15:47:56,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:56,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:56,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 15:47:56,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:47:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 1951 proven. 156 refuted. 0 times theorem prover too weak. 5457 trivial. 0 not checked. [2025-03-08 15:47:56,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:47:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 27 proven. 156 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2025-03-08 15:47:57,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548521854] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:47:57,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:47:57,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-08 15:47:57,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323929589] [2025-03-08 15:47:57,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:47:57,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:47:57,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:47:57,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:47:57,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:47:57,288 INFO L87 Difference]: Start difference. First operand 1577 states and 2434 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2025-03-08 15:47:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:47:57,669 INFO L93 Difference]: Finished difference Result 2922 states and 4498 transitions. [2025-03-08 15:47:57,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:47:57,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 443 [2025-03-08 15:47:57,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:47:57,678 INFO L225 Difference]: With dead ends: 2922 [2025-03-08 15:47:57,678 INFO L226 Difference]: Without dead ends: 1605 [2025-03-08 15:47:57,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 883 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:47:57,681 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 545 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:47:57,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1003 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:47:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2025-03-08 15:47:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1589. [2025-03-08 15:47:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1382 states have (on average 1.4696092619392185) internal successors, (2031), 1384 states have internal predecessors, (2031), 198 states have call successors, (198), 8 states have call predecessors, (198), 8 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2025-03-08 15:47:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2427 transitions. [2025-03-08 15:47:57,764 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2427 transitions. Word has length 443 [2025-03-08 15:47:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:47:57,765 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2427 transitions. [2025-03-08 15:47:57,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2025-03-08 15:47:57,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2427 transitions. [2025-03-08 15:47:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2025-03-08 15:47:57,768 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:47:57,769 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:47:57,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 15:47:57,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-08 15:47:57,973 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:47:57,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:47:57,974 INFO L85 PathProgramCache]: Analyzing trace with hash 856355781, now seen corresponding path program 1 times [2025-03-08 15:47:57,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:47:57,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551159361] [2025-03-08 15:47:57,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:57,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:47:58,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 444 statements into 1 equivalence classes. [2025-03-08 15:47:59,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 444 of 444 statements. [2025-03-08 15:47:59,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:59,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 33 proven. 150 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2025-03-08 15:47:59,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:47:59,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551159361] [2025-03-08 15:47:59,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551159361] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:47:59,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931855077] [2025-03-08 15:47:59,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:47:59,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:47:59,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:47:59,605 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) [2025-03-08 15:47:59,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 15:47:59,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 444 statements into 1 equivalence classes. [2025-03-08 15:47:59,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 444 of 444 statements. [2025-03-08 15:47:59,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:47:59,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:47:59,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 15:47:59,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:48:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 2437 proven. 147 refuted. 0 times theorem prover too weak. 4980 trivial. 0 not checked. [2025-03-08 15:48:00,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:48:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 36 proven. 147 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2025-03-08 15:48:01,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931855077] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:48:01,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:48:01,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 8] total 17 [2025-03-08 15:48:01,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379768728] [2025-03-08 15:48:01,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:48:01,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 15:48:01,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:48:01,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 15:48:01,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2025-03-08 15:48:01,069 INFO L87 Difference]: Start difference. First operand 1589 states and 2427 transitions. Second operand has 17 states, 17 states have (on average 15.882352941176471) internal successors, (270), 17 states have internal predecessors, (270), 6 states have call successors, (186), 3 states have call predecessors, (186), 6 states have return successors, (186), 6 states have call predecessors, (186), 6 states have call successors, (186) [2025-03-08 15:48:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:48:02,562 INFO L93 Difference]: Finished difference Result 4090 states and 6205 transitions. [2025-03-08 15:48:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 15:48:02,563 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.882352941176471) internal successors, (270), 17 states have internal predecessors, (270), 6 states have call successors, (186), 3 states have call predecessors, (186), 6 states have return successors, (186), 6 states have call predecessors, (186), 6 states have call successors, (186) Word has length 444 [2025-03-08 15:48:02,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:48:02,575 INFO L225 Difference]: With dead ends: 4090 [2025-03-08 15:48:02,575 INFO L226 Difference]: Without dead ends: 2649 [2025-03-08 15:48:02,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 879 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=956, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 15:48:02,580 INFO L435 NwaCegarLoop]: 412 mSDtfsCounter, 2117 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2129 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:48:02,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2129 Valid, 2885 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 15:48:02,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2025-03-08 15:48:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2138. [2025-03-08 15:48:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1854 states have (on average 1.4492988133764833) internal successors, (2687), 1857 states have internal predecessors, (2687), 266 states have call successors, (266), 17 states have call predecessors, (266), 17 states have return successors, (266), 263 states have call predecessors, (266), 266 states have call successors, (266) [2025-03-08 15:48:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3219 transitions. [2025-03-08 15:48:02,695 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3219 transitions. Word has length 444 [2025-03-08 15:48:02,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:48:02,695 INFO L471 AbstractCegarLoop]: Abstraction has 2138 states and 3219 transitions. [2025-03-08 15:48:02,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.882352941176471) internal successors, (270), 17 states have internal predecessors, (270), 6 states have call successors, (186), 3 states have call predecessors, (186), 6 states have return successors, (186), 6 states have call predecessors, (186), 6 states have call successors, (186) [2025-03-08 15:48:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3219 transitions. [2025-03-08 15:48:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2025-03-08 15:48:02,698 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:48:02,699 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:48:02,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 15:48:02,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:48:02,903 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:48:02,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:48:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2109003019, now seen corresponding path program 1 times [2025-03-08 15:48:02,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:48:02,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660608507] [2025-03-08 15:48:02,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:02,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:48:02,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 445 statements into 1 equivalence classes. [2025-03-08 15:48:03,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 445 of 445 statements. [2025-03-08 15:48:03,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:03,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:48:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:48:03,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:48:03,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660608507] [2025-03-08 15:48:03,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660608507] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:48:03,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:48:03,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 15:48:03,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103976581] [2025-03-08 15:48:03,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:48:03,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 15:48:03,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:48:03,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 15:48:03,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:48:03,699 INFO L87 Difference]: Start difference. First operand 2138 states and 3219 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:48:04,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:48:04,054 INFO L93 Difference]: Finished difference Result 3717 states and 5601 transitions. [2025-03-08 15:48:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 15:48:04,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 445 [2025-03-08 15:48:04,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:48:04,065 INFO L225 Difference]: With dead ends: 3717 [2025-03-08 15:48:04,065 INFO L226 Difference]: Without dead ends: 2552 [2025-03-08 15:48:04,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:48:04,069 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 863 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:48:04,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1841 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:48:04,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2025-03-08 15:48:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2291. [2025-03-08 15:48:04,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2007 states have (on average 1.460388639760837) internal successors, (2931), 2010 states have internal predecessors, (2931), 266 states have call successors, (266), 17 states have call predecessors, (266), 17 states have return successors, (266), 263 states have call predecessors, (266), 266 states have call successors, (266) [2025-03-08 15:48:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3463 transitions. [2025-03-08 15:48:04,180 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3463 transitions. Word has length 445 [2025-03-08 15:48:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:48:04,180 INFO L471 AbstractCegarLoop]: Abstraction has 2291 states and 3463 transitions. [2025-03-08 15:48:04,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:48:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3463 transitions. [2025-03-08 15:48:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2025-03-08 15:48:04,188 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:48:04,188 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:48:04,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 15:48:04,189 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:48:04,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:48:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1376476820, now seen corresponding path program 1 times [2025-03-08 15:48:04,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:48:04,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857310413] [2025-03-08 15:48:04,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:04,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:48:04,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 445 statements into 1 equivalence classes. [2025-03-08 15:48:04,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 445 of 445 statements. [2025-03-08 15:48:04,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:04,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:48:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 120 proven. 63 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2025-03-08 15:48:05,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:48:05,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857310413] [2025-03-08 15:48:05,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857310413] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:48:05,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155846142] [2025-03-08 15:48:05,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:05,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:48:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:48:05,669 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) [2025-03-08 15:48:05,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 15:48:05,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 445 statements into 1 equivalence classes. [2025-03-08 15:48:05,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 445 of 445 statements. [2025-03-08 15:48:05,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:05,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:48:05,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-08 15:48:05,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:48:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3516 proven. 456 refuted. 0 times theorem prover too weak. 3592 trivial. 0 not checked. [2025-03-08 15:48:07,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:48:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 240 proven. 474 refuted. 0 times theorem prover too weak. 6850 trivial. 0 not checked. [2025-03-08 15:48:08,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155846142] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:48:08,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:48:08,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 32 [2025-03-08 15:48:08,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549185251] [2025-03-08 15:48:08,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:48:08,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 15:48:08,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:48:08,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 15:48:08,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2025-03-08 15:48:08,319 INFO L87 Difference]: Start difference. First operand 2291 states and 3463 transitions. Second operand has 32 states, 29 states have (on average 11.689655172413794) internal successors, (339), 28 states have internal predecessors, (339), 12 states have call successors, (165), 5 states have call predecessors, (165), 10 states have return successors, (166), 11 states have call predecessors, (166), 12 states have call successors, (166) [2025-03-08 15:48:11,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:48:11,864 INFO L93 Difference]: Finished difference Result 6513 states and 9736 transitions. [2025-03-08 15:48:11,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-03-08 15:48:11,865 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 11.689655172413794) internal successors, (339), 28 states have internal predecessors, (339), 12 states have call successors, (165), 5 states have call predecessors, (165), 10 states have return successors, (166), 11 states have call predecessors, (166), 12 states have call successors, (166) Word has length 445 [2025-03-08 15:48:11,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:48:11,883 INFO L225 Difference]: With dead ends: 6513 [2025-03-08 15:48:11,883 INFO L226 Difference]: Without dead ends: 4559 [2025-03-08 15:48:11,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1558, Invalid=4294, Unknown=0, NotChecked=0, Total=5852 [2025-03-08 15:48:11,887 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 3869 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3869 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:48:11,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3869 Valid, 2330 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1096 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-08 15:48:11,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2025-03-08 15:48:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 4503. [2025-03-08 15:48:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4503 states, 3966 states have (on average 1.4422592032274333) internal successors, (5720), 3972 states have internal predecessors, (5720), 470 states have call successors, (470), 66 states have call predecessors, (470), 66 states have return successors, (470), 464 states have call predecessors, (470), 470 states have call successors, (470) [2025-03-08 15:48:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 6660 transitions. [2025-03-08 15:48:12,221 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 6660 transitions. Word has length 445 [2025-03-08 15:48:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:48:12,222 INFO L471 AbstractCegarLoop]: Abstraction has 4503 states and 6660 transitions. [2025-03-08 15:48:12,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 11.689655172413794) internal successors, (339), 28 states have internal predecessors, (339), 12 states have call successors, (165), 5 states have call predecessors, (165), 10 states have return successors, (166), 11 states have call predecessors, (166), 12 states have call successors, (166) [2025-03-08 15:48:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 6660 transitions. [2025-03-08 15:48:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2025-03-08 15:48:12,232 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:48:12,232 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:48:12,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 15:48:12,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:48:12,433 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:48:12,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:48:12,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1924948127, now seen corresponding path program 1 times [2025-03-08 15:48:12,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:48:12,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589524371] [2025-03-08 15:48:12,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:12,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:48:12,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 446 statements into 1 equivalence classes. [2025-03-08 15:48:15,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 446 of 446 statements. [2025-03-08 15:48:15,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:15,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:48:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 135 proven. 48 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2025-03-08 15:48:15,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:48:15,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589524371] [2025-03-08 15:48:15,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589524371] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:48:15,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605465982] [2025-03-08 15:48:15,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:15,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:48:15,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:48:15,476 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) [2025-03-08 15:48:15,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 15:48:15,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 446 statements into 1 equivalence classes. [2025-03-08 15:48:15,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 446 of 446 statements. [2025-03-08 15:48:15,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:15,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:48:15,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 15:48:15,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:48:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:48:15,810 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:48:15,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605465982] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:48:15,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:48:15,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-08 15:48:15,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088062250] [2025-03-08 15:48:15,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:48:15,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 15:48:15,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:48:15,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 15:48:15,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:48:15,812 INFO L87 Difference]: Start difference. First operand 4503 states and 6660 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:48:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:48:16,633 INFO L93 Difference]: Finished difference Result 12407 states and 18390 transitions. [2025-03-08 15:48:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 15:48:16,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 446 [2025-03-08 15:48:16,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:48:16,663 INFO L225 Difference]: With dead ends: 12407 [2025-03-08 15:48:16,663 INFO L226 Difference]: Without dead ends: 8413 [2025-03-08 15:48:16,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-03-08 15:48:16,701 INFO L435 NwaCegarLoop]: 777 mSDtfsCounter, 862 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 15:48:16,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 2295 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 15:48:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8413 states. [2025-03-08 15:48:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8413 to 6093. [2025-03-08 15:48:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6093 states, 5556 states have (on average 1.4622030237580994) internal successors, (8124), 5562 states have internal predecessors, (8124), 470 states have call successors, (470), 66 states have call predecessors, (470), 66 states have return successors, (470), 464 states have call predecessors, (470), 470 states have call successors, (470) [2025-03-08 15:48:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 9064 transitions. [2025-03-08 15:48:16,941 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 9064 transitions. Word has length 446 [2025-03-08 15:48:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:48:16,942 INFO L471 AbstractCegarLoop]: Abstraction has 6093 states and 9064 transitions. [2025-03-08 15:48:16,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:48:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 9064 transitions. [2025-03-08 15:48:16,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2025-03-08 15:48:16,945 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:48:16,946 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:48:16,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 15:48:17,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 15:48:17,146 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:48:17,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:48:17,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1230298638, now seen corresponding path program 1 times [2025-03-08 15:48:17,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:48:17,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149786816] [2025-03-08 15:48:17,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:17,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:48:17,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 447 statements into 1 equivalence classes. [2025-03-08 15:48:18,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 447 of 447 statements. [2025-03-08 15:48:18,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:18,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:48:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 135 proven. 48 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2025-03-08 15:48:18,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:48:18,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149786816] [2025-03-08 15:48:18,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149786816] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:48:18,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60151755] [2025-03-08 15:48:18,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:18,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:48:18,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:48:18,985 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) [2025-03-08 15:48:18,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 15:48:19,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 447 statements into 1 equivalence classes. [2025-03-08 15:48:19,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 447 of 447 statements. [2025-03-08 15:48:19,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:19,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:48:19,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 15:48:19,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:48:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:48:19,409 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:48:19,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60151755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:48:19,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:48:19,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2025-03-08 15:48:19,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613082408] [2025-03-08 15:48:19,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:48:19,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 15:48:19,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:48:19,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 15:48:19,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-08 15:48:19,410 INFO L87 Difference]: Start difference. First operand 6093 states and 9064 transitions. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:48:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:48:21,798 INFO L93 Difference]: Finished difference Result 21049 states and 31282 transitions. [2025-03-08 15:48:21,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:48:21,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 447 [2025-03-08 15:48:21,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:48:21,838 INFO L225 Difference]: With dead ends: 21049 [2025-03-08 15:48:21,838 INFO L226 Difference]: Without dead ends: 15609 [2025-03-08 15:48:21,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-03-08 15:48:21,850 INFO L435 NwaCegarLoop]: 1087 mSDtfsCounter, 1885 mSDsluCounter, 2517 mSDsCounter, 0 mSdLazyCounter, 2541 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-08 15:48:21,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1885 Valid, 3604 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2541 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-08 15:48:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15609 states. [2025-03-08 15:48:22,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15609 to 7639. [2025-03-08 15:48:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7639 states, 7102 states have (on average 1.4598704590256266) internal successors, (10368), 7108 states have internal predecessors, (10368), 470 states have call successors, (470), 66 states have call predecessors, (470), 66 states have return successors, (470), 464 states have call predecessors, (470), 470 states have call successors, (470) [2025-03-08 15:48:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7639 states to 7639 states and 11308 transitions. [2025-03-08 15:48:22,202 INFO L78 Accepts]: Start accepts. Automaton has 7639 states and 11308 transitions. Word has length 447 [2025-03-08 15:48:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:48:22,202 INFO L471 AbstractCegarLoop]: Abstraction has 7639 states and 11308 transitions. [2025-03-08 15:48:22,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:48:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7639 states and 11308 transitions. [2025-03-08 15:48:22,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2025-03-08 15:48:22,209 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:48:22,209 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:48:22,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 15:48:22,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:48:22,411 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:48:22,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:48:22,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1197564527, now seen corresponding path program 1 times [2025-03-08 15:48:22,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:48:22,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428413490] [2025-03-08 15:48:22,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:22,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:48:22,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 448 statements into 1 equivalence classes. [2025-03-08 15:48:22,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 448 of 448 statements. [2025-03-08 15:48:22,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:22,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:48:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2025-03-08 15:48:22,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:48:22,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428413490] [2025-03-08 15:48:22,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428413490] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:48:22,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:48:22,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:48:22,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963417607] [2025-03-08 15:48:22,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:48:22,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:48:22,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:48:22,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:48:22,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:48:22,715 INFO L87 Difference]: Start difference. First operand 7639 states and 11308 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:48:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:48:22,995 INFO L93 Difference]: Finished difference Result 15743 states and 23479 transitions. [2025-03-08 15:48:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:48:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 448 [2025-03-08 15:48:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:48:23,014 INFO L225 Difference]: With dead ends: 15743 [2025-03-08 15:48:23,014 INFO L226 Difference]: Without dead ends: 9029 [2025-03-08 15:48:23,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:48:23,023 INFO L435 NwaCegarLoop]: 440 mSDtfsCounter, 85 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:48:23,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1395 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:48:23,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9029 states. [2025-03-08 15:48:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9029 to 8047. [2025-03-08 15:48:23,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8047 states, 7510 states have (on average 1.4508655126498002) internal successors, (10896), 7516 states have internal predecessors, (10896), 470 states have call successors, (470), 66 states have call predecessors, (470), 66 states have return successors, (470), 464 states have call predecessors, (470), 470 states have call successors, (470) [2025-03-08 15:48:23,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8047 states to 8047 states and 11836 transitions. [2025-03-08 15:48:23,417 INFO L78 Accepts]: Start accepts. Automaton has 8047 states and 11836 transitions. Word has length 448 [2025-03-08 15:48:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:48:23,417 INFO L471 AbstractCegarLoop]: Abstraction has 8047 states and 11836 transitions. [2025-03-08 15:48:23,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2025-03-08 15:48:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 8047 states and 11836 transitions. [2025-03-08 15:48:23,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2025-03-08 15:48:23,422 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:48:23,422 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:48:23,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 15:48:23,422 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:48:23,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:48:23,423 INFO L85 PathProgramCache]: Analyzing trace with hash -723829687, now seen corresponding path program 1 times [2025-03-08 15:48:23,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:48:23,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423722253] [2025-03-08 15:48:23,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:48:23,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:48:23,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 448 statements into 1 equivalence classes. [2025-03-08 15:48:25,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 448 of 448 statements. [2025-03-08 15:48:25,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:48:25,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat