./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-34.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 c9b50f113379d6dd32c9227ee2a149aa46425a55ff517b54eccf6b1bc662e210 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 04:28:27,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 04:28:27,909 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 04:28:27,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 04:28:27,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 04:28:27,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 04:28:27,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 04:28:27,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 04:28:27,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 04:28:27,949 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 04:28:27,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 04:28:27,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 04:28:27,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 04:28:27,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 04:28:27,950 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 04:28:27,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 04:28:27,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 04:28:27,950 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 04:28:27,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 04:28:27,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 04:28:27,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 04:28:27,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 04:28:27,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 04:28:27,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 04:28:27,953 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 04:28:27,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 04:28:27,953 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 04:28:27,953 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 04:28:27,953 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 04:28:27,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 04:28:27,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 04:28:27,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 04:28:27,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:28:27,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 04:28:27,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 04:28:27,954 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 04:28:27,954 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 04:28:27,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 04:28:27,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 04:28:27,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 04:28:27,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 04:28:27,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 04:28:27,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 04:28:27,955 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 -> c9b50f113379d6dd32c9227ee2a149aa46425a55ff517b54eccf6b1bc662e210 [2025-03-17 04:28:28,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 04:28:28,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 04:28:28,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 04:28:28,244 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 04:28:28,244 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 04:28:28,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-34.i [2025-03-17 04:28:29,461 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfb5b87c/5ae8a9fdd7b945a5b45ba8fb7e1886ca/FLAG78e5cb55b [2025-03-17 04:28:29,747 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 04:28:29,747 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-34.i [2025-03-17 04:28:29,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfb5b87c/5ae8a9fdd7b945a5b45ba8fb7e1886ca/FLAG78e5cb55b [2025-03-17 04:28:30,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfb5b87c/5ae8a9fdd7b945a5b45ba8fb7e1886ca [2025-03-17 04:28:30,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 04:28:30,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 04:28:30,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 04:28:30,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 04:28:30,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 04:28:30,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8ad8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30, skipping insertion in model container [2025-03-17 04:28:30,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,090 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 04:28:30,210 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-34.i[916,929] [2025-03-17 04:28:30,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:28:30,369 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 04:28:30,378 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-34.i[916,929] [2025-03-17 04:28:30,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:28:30,444 INFO L204 MainTranslator]: Completed translation [2025-03-17 04:28:30,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30 WrapperNode [2025-03-17 04:28:30,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 04:28:30,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 04:28:30,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 04:28:30,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 04:28:30,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,514 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 432 [2025-03-17 04:28:30,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 04:28:30,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 04:28:30,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 04:28:30,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 04:28:30,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,562 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 04:28:30,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,579 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,594 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 04:28:30,615 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 04:28:30,615 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 04:28:30,616 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 04:28:30,616 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (1/1) ... [2025-03-17 04:28:30,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:28:30,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:28:30,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 04:28:30,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 04:28:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 04:28:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 04:28:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 04:28:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 04:28:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 04:28:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 04:28:30,755 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 04:28:30,756 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 04:28:31,454 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L364: havoc property_#t~ite35#1;havoc property_#t~bitwise34#1;havoc property_#t~short36#1;havoc property_#t~bitwise37#1;havoc property_#t~short38#1;havoc property_#t~bitwise39#1;havoc property_#t~short40#1;havoc property_#t~ite42#1;havoc property_#t~bitwise41#1;havoc property_#t~short43#1; [2025-03-17 04:28:31,520 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2025-03-17 04:28:31,521 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 04:28:31,541 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 04:28:31,543 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 04:28:31,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:28:31 BoogieIcfgContainer [2025-03-17 04:28:31,543 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 04:28:31,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 04:28:31,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 04:28:31,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 04:28:31,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:28:30" (1/3) ... [2025-03-17 04:28:31,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef0a23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:28:31, skipping insertion in model container [2025-03-17 04:28:31,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:28:30" (2/3) ... [2025-03-17 04:28:31,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef0a23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:28:31, skipping insertion in model container [2025-03-17 04:28:31,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:28:31" (3/3) ... [2025-03-17 04:28:31,553 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-34.i [2025-03-17 04:28:31,566 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 04:28:31,568 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-34.i that has 2 procedures, 175 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 04:28:31,628 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 04:28:31,639 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;@4809faa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 04:28:31,640 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 04:28:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 128 states have (on average 1.515625) internal successors, (194), 129 states have internal predecessors, (194), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 04:28:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-17 04:28:31,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:28:31,657 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:28:31,658 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:28:31,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:28:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1581514139, now seen corresponding path program 1 times [2025-03-17 04:28:31,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:28:31,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974253541] [2025-03-17 04:28:31,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:31,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:28:31,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:28:31,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:28:31,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:31,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-03-17 04:28:32,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:28:32,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974253541] [2025-03-17 04:28:32,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974253541] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:28:32,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338756328] [2025-03-17 04:28:32,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:32,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:28:32,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:28:32,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:28:32,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 04:28:32,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:28:32,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:28:32,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:32,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:32,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 04:28:32,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:28:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-03-17 04:28:32,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 04:28:32,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338756328] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:28:32,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:28:32,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 04:28:32,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582710229] [2025-03-17 04:28:32,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:28:32,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 04:28:32,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:28:32,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 04:28:32,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:28:32,420 INFO L87 Difference]: Start difference. First operand has 175 states, 128 states have (on average 1.515625) internal successors, (194), 129 states have internal predecessors, (194), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-17 04:28:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:28:32,461 INFO L93 Difference]: Finished difference Result 347 states and 606 transitions. [2025-03-17 04:28:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 04:28:32,464 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 297 [2025-03-17 04:28:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:28:32,470 INFO L225 Difference]: With dead ends: 347 [2025-03-17 04:28:32,471 INFO L226 Difference]: Without dead ends: 173 [2025-03-17 04:28:32,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:28:32,477 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:28:32,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:28:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-17 04:28:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2025-03-17 04:28:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 127 states have (on average 1.4881889763779528) internal successors, (189), 127 states have internal predecessors, (189), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 04:28:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 277 transitions. [2025-03-17 04:28:32,530 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 277 transitions. Word has length 297 [2025-03-17 04:28:32,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:28:32,530 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 277 transitions. [2025-03-17 04:28:32,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-17 04:28:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 277 transitions. [2025-03-17 04:28:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-17 04:28:32,538 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:28:32,538 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:28:32,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 04:28:32,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 04:28:32,739 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:28:32,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:28:32,740 INFO L85 PathProgramCache]: Analyzing trace with hash -693594205, now seen corresponding path program 1 times [2025-03-17 04:28:32,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:28:32,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854534554] [2025-03-17 04:28:32,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:32,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:28:32,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:28:32,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:28:32,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:32,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-17 04:28:33,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:28:33,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854534554] [2025-03-17 04:28:33,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854534554] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:28:33,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:28:33,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:28:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226245014] [2025-03-17 04:28:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:28:33,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:28:33,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:28:33,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:28:33,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:28:33,063 INFO L87 Difference]: Start difference. First operand 173 states and 277 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:28:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:28:33,165 INFO L93 Difference]: Finished difference Result 474 states and 757 transitions. [2025-03-17 04:28:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:28:33,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 297 [2025-03-17 04:28:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:28:33,170 INFO L225 Difference]: With dead ends: 474 [2025-03-17 04:28:33,171 INFO L226 Difference]: Without dead ends: 302 [2025-03-17 04:28:33,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:28:33,174 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 192 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:28:33,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 688 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:28:33,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2025-03-17 04:28:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 299. [2025-03-17 04:28:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 233 states have (on average 1.5064377682403434) internal successors, (351), 234 states have internal predecessors, (351), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2025-03-17 04:28:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 477 transitions. [2025-03-17 04:28:33,206 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 477 transitions. Word has length 297 [2025-03-17 04:28:33,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:28:33,208 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 477 transitions. [2025-03-17 04:28:33,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:28:33,208 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 477 transitions. [2025-03-17 04:28:33,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-17 04:28:33,212 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:28:33,213 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:28:33,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 04:28:33,214 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:28:33,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:28:33,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1268975555, now seen corresponding path program 1 times [2025-03-17 04:28:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:28:33,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878409645] [2025-03-17 04:28:33,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:33,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:28:33,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:28:33,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:28:33,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:33,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-17 04:28:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:28:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878409645] [2025-03-17 04:28:33,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878409645] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:28:33,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:28:33,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:28:33,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218479585] [2025-03-17 04:28:33,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:28:33,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:28:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:28:33,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:28:33,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:28:33,459 INFO L87 Difference]: Start difference. First operand 299 states and 477 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:28:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:28:33,592 INFO L93 Difference]: Finished difference Result 855 states and 1358 transitions. [2025-03-17 04:28:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:28:33,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 297 [2025-03-17 04:28:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:28:33,602 INFO L225 Difference]: With dead ends: 855 [2025-03-17 04:28:33,602 INFO L226 Difference]: Without dead ends: 557 [2025-03-17 04:28:33,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:28:33,603 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 224 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:28:33,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 544 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:28:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-17 04:28:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 361. [2025-03-17 04:28:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 295 states have (on average 1.4915254237288136) internal successors, (440), 296 states have internal predecessors, (440), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2025-03-17 04:28:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 566 transitions. [2025-03-17 04:28:33,666 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 566 transitions. Word has length 297 [2025-03-17 04:28:33,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:28:33,667 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 566 transitions. [2025-03-17 04:28:33,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:28:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 566 transitions. [2025-03-17 04:28:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-17 04:28:33,671 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:28:33,671 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:28:33,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 04:28:33,672 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:28:33,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:28:33,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1329594662, now seen corresponding path program 1 times [2025-03-17 04:28:33,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:28:33,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996734839] [2025-03-17 04:28:33,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:33,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:28:33,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:28:33,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:28:33,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:33,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-17 04:28:33,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:28:33,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996734839] [2025-03-17 04:28:33,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996734839] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:28:33,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:28:33,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:28:33,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394832863] [2025-03-17 04:28:33,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:28:33,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:28:33,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:28:33,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:28:33,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:28:33,988 INFO L87 Difference]: Start difference. First operand 361 states and 566 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:28:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:28:34,082 INFO L93 Difference]: Finished difference Result 1081 states and 1696 transitions. [2025-03-17 04:28:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:28:34,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 297 [2025-03-17 04:28:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:28:34,090 INFO L225 Difference]: With dead ends: 1081 [2025-03-17 04:28:34,092 INFO L226 Difference]: Without dead ends: 721 [2025-03-17 04:28:34,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:28:34,094 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 170 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:28:34,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 521 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:28:34,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2025-03-17 04:28:34,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 709. [2025-03-17 04:28:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 578 states have (on average 1.4775086505190311) internal successors, (854), 580 states have internal predecessors, (854), 126 states have call successors, (126), 4 states have call predecessors, (126), 4 states have return successors, (126), 124 states have call predecessors, (126), 126 states have call successors, (126) [2025-03-17 04:28:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1106 transitions. [2025-03-17 04:28:34,184 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1106 transitions. Word has length 297 [2025-03-17 04:28:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:28:34,184 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 1106 transitions. [2025-03-17 04:28:34,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:28:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1106 transitions. [2025-03-17 04:28:34,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2025-03-17 04:28:34,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:28:34,192 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:28:34,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 04:28:34,192 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:28:34,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:28:34,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1580024559, now seen corresponding path program 1 times [2025-03-17 04:28:34,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:28:34,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935601592] [2025-03-17 04:28:34,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:34,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:28:34,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-03-17 04:28:34,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-03-17 04:28:34,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:34,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-17 04:28:35,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:28:35,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935601592] [2025-03-17 04:28:35,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935601592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:28:35,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:28:35,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:28:35,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077396795] [2025-03-17 04:28:35,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:28:35,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:28:35,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:28:35,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:28:35,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:28:35,139 INFO L87 Difference]: Start difference. First operand 709 states and 1106 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:28:35,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:28:35,452 INFO L93 Difference]: Finished difference Result 1972 states and 3074 transitions. [2025-03-17 04:28:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:28:35,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 298 [2025-03-17 04:28:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:28:35,459 INFO L225 Difference]: With dead ends: 1972 [2025-03-17 04:28:35,459 INFO L226 Difference]: Without dead ends: 1264 [2025-03-17 04:28:35,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:28:35,461 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 254 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:28:35,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 799 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:28:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2025-03-17 04:28:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1046. [2025-03-17 04:28:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 870 states have (on average 1.5103448275862068) internal successors, (1314), 872 states have internal predecessors, (1314), 170 states have call successors, (170), 5 states have call predecessors, (170), 5 states have return successors, (170), 168 states have call predecessors, (170), 170 states have call successors, (170) [2025-03-17 04:28:35,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1654 transitions. [2025-03-17 04:28:35,561 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1654 transitions. Word has length 298 [2025-03-17 04:28:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:28:35,562 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1654 transitions. [2025-03-17 04:28:35,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:28:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1654 transitions. [2025-03-17 04:28:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2025-03-17 04:28:35,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:28:35,568 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:28:35,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 04:28:35,570 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:28:35,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:28:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -933800, now seen corresponding path program 1 times [2025-03-17 04:28:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:28:35,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442472217] [2025-03-17 04:28:35,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:28:35,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 299 statements into 1 equivalence classes. [2025-03-17 04:28:36,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 299 of 299 statements. [2025-03-17 04:28:36,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:36,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-17 04:28:36,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:28:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442472217] [2025-03-17 04:28:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442472217] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:28:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627036453] [2025-03-17 04:28:36,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:36,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:28:36,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:28:36,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:28:36,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 04:28:36,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 299 statements into 1 equivalence classes. [2025-03-17 04:28:36,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 299 of 299 statements. [2025-03-17 04:28:36,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:36,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:36,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 04:28:36,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:28:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1873 proven. 150 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2025-03-17 04:28:37,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:28:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-17 04:28:37,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627036453] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:28:37,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:28:37,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 13 [2025-03-17 04:28:37,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902668708] [2025-03-17 04:28:37,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:28:37,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 04:28:37,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:28:37,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 04:28:37,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2025-03-17 04:28:37,600 INFO L87 Difference]: Start difference. First operand 1046 states and 1654 transitions. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 3 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2025-03-17 04:28:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:28:39,173 INFO L93 Difference]: Finished difference Result 3170 states and 4846 transitions. [2025-03-17 04:28:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-17 04:28:39,173 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 3 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) Word has length 299 [2025-03-17 04:28:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:28:39,184 INFO L225 Difference]: With dead ends: 3170 [2025-03-17 04:28:39,184 INFO L226 Difference]: Without dead ends: 2294 [2025-03-17 04:28:39,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 595 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=446, Invalid=1276, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 04:28:39,188 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 1807 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:28:39,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 1182 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 04:28:39,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2025-03-17 04:28:39,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1552. [2025-03-17 04:28:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1277 states have (on average 1.4526233359436178) internal successors, (1855), 1281 states have internal predecessors, (1855), 254 states have call successors, (254), 20 states have call predecessors, (254), 20 states have return successors, (254), 250 states have call predecessors, (254), 254 states have call successors, (254) [2025-03-17 04:28:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2363 transitions. [2025-03-17 04:28:39,304 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2363 transitions. Word has length 299 [2025-03-17 04:28:39,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:28:39,304 INFO L471 AbstractCegarLoop]: Abstraction has 1552 states and 2363 transitions. [2025-03-17 04:28:39,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 3 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2025-03-17 04:28:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2363 transitions. [2025-03-17 04:28:39,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-03-17 04:28:39,309 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:28:39,309 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:28:39,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 04:28:39,514 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,SelfDestructingSolverStorable5 [2025-03-17 04:28:39,514 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:28:39,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:28:39,515 INFO L85 PathProgramCache]: Analyzing trace with hash 731136819, now seen corresponding path program 1 times [2025-03-17 04:28:39,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:28:39,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507921191] [2025-03-17 04:28:39,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:39,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:28:39,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-17 04:28:39,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-17 04:28:39,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:39,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 219 proven. 33 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2025-03-17 04:28:41,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:28:41,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507921191] [2025-03-17 04:28:41,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507921191] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:28:41,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697612699] [2025-03-17 04:28:41,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:41,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:28:41,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:28:41,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:28:41,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 04:28:42,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-17 04:28:42,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-17 04:28:42,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:42,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:42,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-17 04:28:42,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:28:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1600 proven. 48 refuted. 0 times theorem prover too weak. 2136 trivial. 0 not checked. [2025-03-17 04:28:43,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:29:07,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697612699] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:29:07,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 04:29:07,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 28 [2025-03-17 04:29:07,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970880605] [2025-03-17 04:29:07,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 04:29:07,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 04:29:07,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:29:07,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 04:29:07,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=902, Unknown=3, NotChecked=0, Total=1056 [2025-03-17 04:29:07,282 INFO L87 Difference]: Start difference. First operand 1552 states and 2363 transitions. Second operand has 28 states, 28 states have (on average 5.25) internal successors, (147), 26 states have internal predecessors, (147), 6 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 7 states have call predecessors, (88), 6 states have call successors, (88) [2025-03-17 04:29:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:29:12,750 INFO L93 Difference]: Finished difference Result 4832 states and 7114 transitions. [2025-03-17 04:29:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-17 04:29:12,751 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.25) internal successors, (147), 26 states have internal predecessors, (147), 6 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 7 states have call predecessors, (88), 6 states have call successors, (88) Word has length 300 [2025-03-17 04:29:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:29:12,770 INFO L225 Difference]: With dead ends: 4832 [2025-03-17 04:29:12,770 INFO L226 Difference]: Without dead ends: 3744 [2025-03-17 04:29:12,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=870, Invalid=5133, Unknown=3, NotChecked=0, Total=6006 [2025-03-17 04:29:12,777 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 1892 mSDsluCounter, 4020 mSDsCounter, 0 mSdLazyCounter, 4303 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 4408 SdHoareTripleChecker+Invalid, 4722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 4303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-17 04:29:12,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 4408 Invalid, 4722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 4303 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-17 04:29:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2025-03-17 04:29:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3106. [2025-03-17 04:29:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 2622 states have (on average 1.4275362318840579) internal successors, (3743), 2636 states have internal predecessors, (3743), 432 states have call successors, (432), 51 states have call predecessors, (432), 51 states have return successors, (432), 418 states have call predecessors, (432), 432 states have call successors, (432) [2025-03-17 04:29:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 4607 transitions. [2025-03-17 04:29:12,950 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 4607 transitions. Word has length 300 [2025-03-17 04:29:12,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:29:12,953 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 4607 transitions. [2025-03-17 04:29:12,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.25) internal successors, (147), 26 states have internal predecessors, (147), 6 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 7 states have call predecessors, (88), 6 states have call successors, (88) [2025-03-17 04:29:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 4607 transitions. [2025-03-17 04:29:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-03-17 04:29:12,960 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:29:12,960 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:29:12,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 04:29:13,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:13,161 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:29:13,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:29:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1864327412, now seen corresponding path program 1 times [2025-03-17 04:29:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:29:13,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941137183] [2025-03-17 04:29:13,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:29:13,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-17 04:29:13,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-17 04:29:13,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:13,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:14,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 312 proven. 57 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2025-03-17 04:29:14,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:29:14,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941137183] [2025-03-17 04:29:14,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941137183] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:29:14,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573577188] [2025-03-17 04:29:14,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:14,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:14,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:29:14,725 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:29:14,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 04:29:14,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-17 04:29:14,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-17 04:29:14,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:14,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:14,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-17 04:29:14,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:29:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1600 proven. 48 refuted. 0 times theorem prover too weak. 2136 trivial. 0 not checked. [2025-03-17 04:29:16,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:29:17,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573577188] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:29:17,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 04:29:17,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2025-03-17 04:29:17,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836885498] [2025-03-17 04:29:17,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 04:29:17,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-17 04:29:17,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:29:17,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-17 04:29:17,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2025-03-17 04:29:17,531 INFO L87 Difference]: Start difference. First operand 3106 states and 4607 transitions. Second operand has 26 states, 25 states have (on average 5.88) internal successors, (147), 23 states have internal predecessors, (147), 7 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 8 states have call predecessors, (88), 7 states have call successors, (88) [2025-03-17 04:29:20,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:29:20,884 INFO L93 Difference]: Finished difference Result 6458 states and 9479 transitions. [2025-03-17 04:29:20,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-17 04:29:20,885 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.88) internal successors, (147), 23 states have internal predecessors, (147), 7 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 8 states have call predecessors, (88), 7 states have call successors, (88) Word has length 300 [2025-03-17 04:29:20,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:29:20,911 INFO L225 Difference]: With dead ends: 6458 [2025-03-17 04:29:20,911 INFO L226 Difference]: Without dead ends: 5370 [2025-03-17 04:29:20,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 345 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=645, Invalid=1905, Unknown=0, NotChecked=0, Total=2550 [2025-03-17 04:29:20,917 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 1532 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 2970 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 2970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:29:20,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 3852 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2970 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-17 04:29:20,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5370 states. [2025-03-17 04:29:21,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5370 to 4916. [2025-03-17 04:29:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4916 states, 4200 states have (on average 1.4245238095238095) internal successors, (5983), 4222 states have internal predecessors, (5983), 634 states have call successors, (634), 81 states have call predecessors, (634), 81 states have return successors, (634), 612 states have call predecessors, (634), 634 states have call successors, (634) [2025-03-17 04:29:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 7251 transitions. [2025-03-17 04:29:21,163 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 7251 transitions. Word has length 300 [2025-03-17 04:29:21,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:29:21,163 INFO L471 AbstractCegarLoop]: Abstraction has 4916 states and 7251 transitions. [2025-03-17 04:29:21,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.88) internal successors, (147), 23 states have internal predecessors, (147), 7 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 8 states have call predecessors, (88), 7 states have call successors, (88) [2025-03-17 04:29:21,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 7251 transitions. [2025-03-17 04:29:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-03-17 04:29:21,169 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:29:21,169 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:29:21,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 04:29:21,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:21,371 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:29:21,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:29:21,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1923012308, now seen corresponding path program 1 times [2025-03-17 04:29:21,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:29:21,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026521635] [2025-03-17 04:29:21,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:21,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:29:21,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-17 04:29:21,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-17 04:29:21,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:21,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 126 proven. 126 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2025-03-17 04:29:22,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:29:22,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026521635] [2025-03-17 04:29:22,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026521635] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:29:22,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810205690] [2025-03-17 04:29:22,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:22,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:22,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:29:22,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:29:22,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 04:29:22,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-17 04:29:22,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-17 04:29:22,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:22,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:22,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 04:29:22,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:29:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1629 proven. 90 refuted. 0 times theorem prover too weak. 2065 trivial. 0 not checked. [2025-03-17 04:29:22,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:29:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-17 04:29:23,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810205690] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:29:23,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:29:23,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2025-03-17 04:29:23,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859670521] [2025-03-17 04:29:23,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:29:23,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 04:29:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:29:23,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 04:29:23,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-17 04:29:23,020 INFO L87 Difference]: Start difference. First operand 4916 states and 7251 transitions. Second operand has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 states have internal predecessors, (176), 4 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 4 states have call predecessors, (105), 4 states have call successors, (105) [2025-03-17 04:29:23,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:29:23,559 INFO L93 Difference]: Finished difference Result 8742 states and 12702 transitions. [2025-03-17 04:29:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 04:29:23,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 states have internal predecessors, (176), 4 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 4 states have call predecessors, (105), 4 states have call successors, (105) Word has length 301 [2025-03-17 04:29:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:29:23,580 INFO L225 Difference]: With dead ends: 8742 [2025-03-17 04:29:23,581 INFO L226 Difference]: Without dead ends: 5130 [2025-03-17 04:29:23,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2025-03-17 04:29:23,592 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 430 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:29:23,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 494 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:29:23,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5130 states. [2025-03-17 04:29:23,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5130 to 5044. [2025-03-17 04:29:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5044 states, 4296 states have (on average 1.406657355679702) internal successors, (6043), 4318 states have internal predecessors, (6043), 634 states have call successors, (634), 113 states have call predecessors, (634), 113 states have return successors, (634), 612 states have call predecessors, (634), 634 states have call successors, (634) [2025-03-17 04:29:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5044 states to 5044 states and 7311 transitions. [2025-03-17 04:29:23,915 INFO L78 Accepts]: Start accepts. Automaton has 5044 states and 7311 transitions. Word has length 301 [2025-03-17 04:29:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:29:23,923 INFO L471 AbstractCegarLoop]: Abstraction has 5044 states and 7311 transitions. [2025-03-17 04:29:23,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.555555555555557) internal successors, (176), 9 states have internal predecessors, (176), 4 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 4 states have call predecessors, (105), 4 states have call successors, (105) [2025-03-17 04:29:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states and 7311 transitions. [2025-03-17 04:29:23,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-03-17 04:29:23,934 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:29:23,934 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:29:23,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 04:29:24,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:24,135 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:29:24,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:29:24,136 INFO L85 PathProgramCache]: Analyzing trace with hash 202092757, now seen corresponding path program 1 times [2025-03-17 04:29:24,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:29:24,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653918563] [2025-03-17 04:29:24,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:24,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:29:24,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-17 04:29:24,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-17 04:29:24,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:24,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 60 proven. 69 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-17 04:29:24,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:29:24,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653918563] [2025-03-17 04:29:24,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653918563] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:29:24,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344120954] [2025-03-17 04:29:24,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:24,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:24,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:29:24,609 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:29:24,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 04:29:24,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-17 04:29:24,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-17 04:29:24,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:24,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:24,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 04:29:24,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:29:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1923 proven. 69 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2025-03-17 04:29:25,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:29:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 60 proven. 69 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-17 04:29:25,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344120954] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:29:25,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:29:25,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-17 04:29:25,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592512225] [2025-03-17 04:29:25,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:29:25,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 04:29:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:29:25,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 04:29:25,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 04:29:25,291 INFO L87 Difference]: Start difference. First operand 5044 states and 7311 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2025-03-17 04:29:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:29:25,759 INFO L93 Difference]: Finished difference Result 7188 states and 10298 transitions. [2025-03-17 04:29:25,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 04:29:25,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 301 [2025-03-17 04:29:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:29:25,790 INFO L225 Difference]: With dead ends: 7188 [2025-03-17 04:29:25,790 INFO L226 Difference]: Without dead ends: 2853 [2025-03-17 04:29:25,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-17 04:29:25,801 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 328 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:29:25,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 539 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:29:25,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2025-03-17 04:29:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 2769. [2025-03-17 04:29:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2162 states have (on average 1.3482886216466234) internal successors, (2915), 2170 states have internal predecessors, (2915), 500 states have call successors, (500), 106 states have call predecessors, (500), 106 states have return successors, (500), 492 states have call predecessors, (500), 500 states have call successors, (500) [2025-03-17 04:29:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 3915 transitions. [2025-03-17 04:29:26,097 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 3915 transitions. Word has length 301 [2025-03-17 04:29:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:29:26,098 INFO L471 AbstractCegarLoop]: Abstraction has 2769 states and 3915 transitions. [2025-03-17 04:29:26,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 4 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2025-03-17 04:29:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 3915 transitions. [2025-03-17 04:29:26,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-03-17 04:29:26,104 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:29:26,105 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:29:26,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 04:29:26,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:26,306 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:29:26,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:29:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1728577994, now seen corresponding path program 1 times [2025-03-17 04:29:26,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:29:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931553533] [2025-03-17 04:29:26,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:29:26,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-17 04:29:26,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-17 04:29:26,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:26,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 04:29:26,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828704536] [2025-03-17 04:29:26,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:26,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:26,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:29:26,635 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:29:26,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 04:29:26,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-17 04:29:26,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-17 04:29:26,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:26,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:26,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-17 04:29:26,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:29:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2487 proven. 216 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2025-03-17 04:29:28,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:29:31,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:29:31,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931553533] [2025-03-17 04:29:31,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 04:29:31,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828704536] [2025-03-17 04:29:31,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828704536] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:29:31,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:29:31,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2025-03-17 04:29:31,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730473179] [2025-03-17 04:29:31,898 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-17 04:29:31,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 04:29:31,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:29:31,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 04:29:31,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2025-03-17 04:29:31,900 INFO L87 Difference]: Start difference. First operand 2769 states and 3915 transitions. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2025-03-17 04:29:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:29:33,470 INFO L93 Difference]: Finished difference Result 5033 states and 7078 transitions. [2025-03-17 04:29:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-17 04:29:33,479 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 301 [2025-03-17 04:29:33,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:29:33,501 INFO L225 Difference]: With dead ends: 5033 [2025-03-17 04:29:33,501 INFO L226 Difference]: Without dead ends: 3008 [2025-03-17 04:29:33,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=650, Invalid=1900, Unknown=0, NotChecked=0, Total=2550 [2025-03-17 04:29:33,509 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 360 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 04:29:33,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2705 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 04:29:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2025-03-17 04:29:33,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2992. [2025-03-17 04:29:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2350 states have (on average 1.3417021276595744) internal successors, (3153), 2360 states have internal predecessors, (3153), 526 states have call successors, (526), 115 states have call predecessors, (526), 115 states have return successors, (526), 516 states have call predecessors, (526), 526 states have call successors, (526) [2025-03-17 04:29:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 4205 transitions. [2025-03-17 04:29:33,798 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 4205 transitions. Word has length 301 [2025-03-17 04:29:33,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:29:33,799 INFO L471 AbstractCegarLoop]: Abstraction has 2992 states and 4205 transitions. [2025-03-17 04:29:33,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2025-03-17 04:29:33,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 4205 transitions. [2025-03-17 04:29:33,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:29:33,801 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:29:33,802 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:29:33,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 04:29:34,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:34,007 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:29:34,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:29:34,007 INFO L85 PathProgramCache]: Analyzing trace with hash -604305145, now seen corresponding path program 1 times [2025-03-17 04:29:34,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:29:34,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33953690] [2025-03-17 04:29:34,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:34,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:29:34,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:29:34,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:29:34,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:34,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-17 04:29:34,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:29:34,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33953690] [2025-03-17 04:29:34,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33953690] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:29:34,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:29:34,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:29:34,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232456597] [2025-03-17 04:29:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:29:34,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:29:34,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:29:34,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:29:34,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:29:34,233 INFO L87 Difference]: Start difference. First operand 2992 states and 4205 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:29:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:29:34,667 INFO L93 Difference]: Finished difference Result 4960 states and 7017 transitions. [2025-03-17 04:29:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:29:34,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 302 [2025-03-17 04:29:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:29:34,685 INFO L225 Difference]: With dead ends: 4960 [2025-03-17 04:29:34,686 INFO L226 Difference]: Without dead ends: 3861 [2025-03-17 04:29:34,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-17 04:29:34,691 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 130 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:29:34,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1142 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:29:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2025-03-17 04:29:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3806. [2025-03-17 04:29:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3146 states have (on average 1.3722186904005085) internal successors, (4317), 3162 states have internal predecessors, (4317), 538 states have call successors, (538), 121 states have call predecessors, (538), 121 states have return successors, (538), 522 states have call predecessors, (538), 538 states have call successors, (538) [2025-03-17 04:29:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 5393 transitions. [2025-03-17 04:29:34,899 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 5393 transitions. Word has length 302 [2025-03-17 04:29:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:29:34,900 INFO L471 AbstractCegarLoop]: Abstraction has 3806 states and 5393 transitions. [2025-03-17 04:29:34,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:29:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 5393 transitions. [2025-03-17 04:29:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:29:34,903 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:29:34,903 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:29:34,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 04:29:34,903 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:29:34,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:29:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash 749004552, now seen corresponding path program 1 times [2025-03-17 04:29:34,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:29:34,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324510831] [2025-03-17 04:29:34,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:34,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:29:34,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:29:34,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:29:34,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:34,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-17 04:29:35,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:29:35,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324510831] [2025-03-17 04:29:35,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324510831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:29:35,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:29:35,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:29:35,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365868468] [2025-03-17 04:29:35,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:29:35,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:29:35,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:29:35,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:29:35,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:29:35,776 INFO L87 Difference]: Start difference. First operand 3806 states and 5393 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:29:36,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:29:36,344 INFO L93 Difference]: Finished difference Result 5583 states and 7925 transitions. [2025-03-17 04:29:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:29:36,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 302 [2025-03-17 04:29:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:29:36,361 INFO L225 Difference]: With dead ends: 5583 [2025-03-17 04:29:36,361 INFO L226 Difference]: Without dead ends: 4124 [2025-03-17 04:29:36,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:29:36,367 INFO L435 NwaCegarLoop]: 349 mSDtfsCounter, 208 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:29:36,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1035 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:29:36,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4124 states. [2025-03-17 04:29:36,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4124 to 4069. [2025-03-17 04:29:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 3409 states have (on average 1.3789967732472865) internal successors, (4701), 3425 states have internal predecessors, (4701), 538 states have call successors, (538), 121 states have call predecessors, (538), 121 states have return successors, (538), 522 states have call predecessors, (538), 538 states have call successors, (538) [2025-03-17 04:29:36,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 5777 transitions. [2025-03-17 04:29:36,602 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 5777 transitions. Word has length 302 [2025-03-17 04:29:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:29:36,603 INFO L471 AbstractCegarLoop]: Abstraction has 4069 states and 5777 transitions. [2025-03-17 04:29:36,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-17 04:29:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 5777 transitions. [2025-03-17 04:29:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:29:36,607 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:29:36,607 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:29:36,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 04:29:36,607 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:29:36,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:29:36,608 INFO L85 PathProgramCache]: Analyzing trace with hash 55902855, now seen corresponding path program 1 times [2025-03-17 04:29:36,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:29:36,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892578447] [2025-03-17 04:29:36,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:36,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:29:36,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:29:36,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:29:36,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:36,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 6 proven. 123 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-17 04:29:37,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:29:37,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892578447] [2025-03-17 04:29:37,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892578447] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:29:37,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85597972] [2025-03-17 04:29:37,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:37,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:37,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:29:37,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:29:37,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 04:29:37,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:29:37,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:29:37,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:37,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:37,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 04:29:37,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:29:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1629 proven. 90 refuted. 0 times theorem prover too weak. 2065 trivial. 0 not checked. [2025-03-17 04:29:37,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:29:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-17 04:29:38,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85597972] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:29:38,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:29:38,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 16 [2025-03-17 04:29:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550120980] [2025-03-17 04:29:38,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:29:38,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 04:29:38,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:29:38,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 04:29:38,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2025-03-17 04:29:38,266 INFO L87 Difference]: Start difference. First operand 4069 states and 5777 transitions. Second operand has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 6 states have call predecessors, (132), 6 states have call successors, (132) [2025-03-17 04:29:40,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:29:40,587 INFO L93 Difference]: Finished difference Result 10895 states and 15416 transitions. [2025-03-17 04:29:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-17 04:29:40,588 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 6 states have call predecessors, (132), 6 states have call successors, (132) Word has length 302 [2025-03-17 04:29:40,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:29:40,616 INFO L225 Difference]: With dead ends: 10895 [2025-03-17 04:29:40,616 INFO L226 Difference]: Without dead ends: 6983 [2025-03-17 04:29:40,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=603, Invalid=2259, Unknown=0, NotChecked=0, Total=2862 [2025-03-17 04:29:40,629 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 2771 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:29:40,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2775 Valid, 2066 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 04:29:40,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6983 states. [2025-03-17 04:29:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6983 to 5801. [2025-03-17 04:29:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 4791 states have (on average 1.353162179085786) internal successors, (6483), 4809 states have internal predecessors, (6483), 806 states have call successors, (806), 203 states have call predecessors, (806), 203 states have return successors, (806), 788 states have call predecessors, (806), 806 states have call successors, (806) [2025-03-17 04:29:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 8095 transitions. [2025-03-17 04:29:41,028 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 8095 transitions. Word has length 302 [2025-03-17 04:29:41,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:29:41,029 INFO L471 AbstractCegarLoop]: Abstraction has 5801 states and 8095 transitions. [2025-03-17 04:29:41,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 6 states have call predecessors, (132), 6 states have call successors, (132) [2025-03-17 04:29:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 8095 transitions. [2025-03-17 04:29:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:29:41,032 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:29:41,033 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:29:41,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 04:29:41,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-17 04:29:41,234 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:29:41,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:29:41,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1534305524, now seen corresponding path program 1 times [2025-03-17 04:29:41,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:29:41,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712646001] [2025-03-17 04:29:41,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:41,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:29:41,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:29:41,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:29:41,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:41,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 66 proven. 63 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-17 04:29:41,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:29:41,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712646001] [2025-03-17 04:29:41,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712646001] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:29:41,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002706695] [2025-03-17 04:29:41,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:41,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:41,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:29:41,903 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:29:41,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 04:29:42,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:29:42,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:29:42,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:42,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:29:42,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 04:29:42,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:29:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1958 proven. 120 refuted. 0 times theorem prover too weak. 1706 trivial. 0 not checked. [2025-03-17 04:29:43,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:29:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 132 proven. 123 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2025-03-17 04:29:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002706695] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:29:43,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:29:43,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 24 [2025-03-17 04:29:43,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825729358] [2025-03-17 04:29:43,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:29:43,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 04:29:43,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:29:43,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 04:29:43,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2025-03-17 04:29:43,814 INFO L87 Difference]: Start difference. First operand 5801 states and 8095 transitions. Second operand has 24 states, 23 states have (on average 8.347826086956522) internal successors, (192), 22 states have internal predecessors, (192), 7 states have call successors, (132), 4 states have call predecessors, (132), 8 states have return successors, (132), 7 states have call predecessors, (132), 7 states have call successors, (132) [2025-03-17 04:29:45,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:29:45,374 INFO L93 Difference]: Finished difference Result 12335 states and 17148 transitions. [2025-03-17 04:29:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-17 04:29:45,374 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 8.347826086956522) internal successors, (192), 22 states have internal predecessors, (192), 7 states have call successors, (132), 4 states have call predecessors, (132), 8 states have return successors, (132), 7 states have call predecessors, (132), 7 states have call successors, (132) Word has length 302 [2025-03-17 04:29:45,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:29:45,394 INFO L225 Difference]: With dead ends: 12335 [2025-03-17 04:29:45,395 INFO L226 Difference]: Without dead ends: 7033 [2025-03-17 04:29:45,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 590 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1145, Unknown=0, NotChecked=0, Total=1560 [2025-03-17 04:29:45,406 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 1785 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 04:29:45,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 1757 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 04:29:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2025-03-17 04:29:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 5809. [2025-03-17 04:29:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5809 states, 4797 states have (on average 1.3489681050656661) internal successors, (6471), 4815 states have internal predecessors, (6471), 806 states have call successors, (806), 205 states have call predecessors, (806), 205 states have return successors, (806), 788 states have call predecessors, (806), 806 states have call successors, (806) [2025-03-17 04:29:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5809 states to 5809 states and 8083 transitions. [2025-03-17 04:29:45,766 INFO L78 Accepts]: Start accepts. Automaton has 5809 states and 8083 transitions. Word has length 302 [2025-03-17 04:29:45,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:29:45,767 INFO L471 AbstractCegarLoop]: Abstraction has 5809 states and 8083 transitions. [2025-03-17 04:29:45,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 8.347826086956522) internal successors, (192), 22 states have internal predecessors, (192), 7 states have call successors, (132), 4 states have call predecessors, (132), 8 states have return successors, (132), 7 states have call predecessors, (132), 7 states have call successors, (132) [2025-03-17 04:29:45,767 INFO L276 IsEmpty]: Start isEmpty. Operand 5809 states and 8083 transitions. [2025-03-17 04:29:45,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:29:45,770 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:29:45,770 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:29:45,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 04:29:45,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 04:29:45,971 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:29:45,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:29:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1822401588, now seen corresponding path program 1 times [2025-03-17 04:29:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:29:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547897015] [2025-03-17 04:29:45,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:45,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:29:45,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:29:46,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:29:46,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:46,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 04:29:46,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399952992] [2025-03-17 04:29:46,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:29:46,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:29:46,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:29:46,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:29:46,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 04:29:46,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:29:46,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:29:46,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:46,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 04:29:46,809 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 04:29:46,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:29:47,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:29:47,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:29:47,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 04:29:47,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 04:29:47,395 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 04:29:47,396 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-17 04:29:47,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 04:29:47,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-17 04:29:47,601 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:29:47,774 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 04:29:47,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 04:29:47 BoogieIcfgContainer [2025-03-17 04:29:47,777 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 04:29:47,779 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 04:29:47,779 INFO L270 PluginConnector]: Initializing Witness Printer...