./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.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-24.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 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 04:27:06,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 04:27:07,028 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 04:27:07,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 04:27:07,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 04:27:07,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 04:27:07,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 04:27:07,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 04:27:07,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 04:27:07,047 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 04:27:07,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 04:27:07,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 04:27:07,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 04:27:07,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 04:27:07,048 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 04:27:07,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 04:27:07,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 04:27:07,048 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 04:27:07,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 04:27:07,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 04:27:07,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 04:27:07,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 04:27:07,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 04:27:07,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 04:27:07,049 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 04:27:07,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 04:27:07,049 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 04:27:07,049 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 04:27:07,049 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 04:27:07,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 04:27:07,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 04:27:07,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 04:27:07,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:27:07,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 04:27:07,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 04:27:07,050 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 04:27:07,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 04:27:07,050 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 04:27:07,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 04:27:07,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 04:27:07,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 04:27:07,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 04:27:07,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 04:27:07,050 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 -> 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d [2025-03-17 04:27:07,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 04:27:07,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 04:27:07,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 04:27:07,280 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 04:27:07,280 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 04:27:07,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2025-03-17 04:27:08,467 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372c5357e/aeed1921f9c64698812d7de2465016ed/FLAGe1cefa33c [2025-03-17 04:27:08,774 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 04:27:08,778 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2025-03-17 04:27:08,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372c5357e/aeed1921f9c64698812d7de2465016ed/FLAGe1cefa33c [2025-03-17 04:27:08,808 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372c5357e/aeed1921f9c64698812d7de2465016ed [2025-03-17 04:27:08,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 04:27:08,812 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 04:27:08,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 04:27:08,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 04:27:08,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 04:27:08,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:27:08" (1/1) ... [2025-03-17 04:27:08,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a9f603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:08, skipping insertion in model container [2025-03-17 04:27:08,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:27:08" (1/1) ... [2025-03-17 04:27:08,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 04:27:08,953 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-24.i[916,929] [2025-03-17 04:27:09,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:27:09,058 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 04:27:09,066 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-24.i[916,929] [2025-03-17 04:27:09,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:27:09,151 INFO L204 MainTranslator]: Completed translation [2025-03-17 04:27:09,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09 WrapperNode [2025-03-17 04:27:09,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 04:27:09,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 04:27:09,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 04:27:09,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 04:27:09,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,222 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 429 [2025-03-17 04:27:09,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 04:27:09,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 04:27:09,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 04:27:09,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 04:27:09,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,235 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,265 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 04:27:09,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,284 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 04:27:09,305 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 04:27:09,305 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 04:27:09,305 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 04:27:09,306 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (1/1) ... [2025-03-17 04:27:09,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:27:09,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:09,336 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 04:27:09,339 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 04:27:09,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 04:27:09,357 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 04:27:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 04:27:09,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 04:27:09,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 04:27:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 04:27:09,456 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 04:27:09,458 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 04:27:09,946 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L371: havoc property_#t~ite35#1;havoc property_#t~bitwise34#1;havoc property_#t~short36#1;havoc property_#t~ite38#1;havoc property_#t~bitwise37#1;havoc property_#t~short39#1;havoc property_#t~ite41#1;havoc property_#t~bitwise40#1;havoc property_#t~short42#1; [2025-03-17 04:27:10,028 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2025-03-17 04:27:10,028 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 04:27:10,048 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 04:27:10,048 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-17 04:27:10,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:27:10 BoogieIcfgContainer [2025-03-17 04:27:10,049 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 04:27:10,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 04:27:10,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 04:27:10,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 04:27:10,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:27:08" (1/3) ... [2025-03-17 04:27:10,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bb5a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:27:10, skipping insertion in model container [2025-03-17 04:27:10,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:09" (2/3) ... [2025-03-17 04:27:10,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bb5a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:27:10, skipping insertion in model container [2025-03-17 04:27:10,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:27:10" (3/3) ... [2025-03-17 04:27:10,056 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-24.i [2025-03-17 04:27:10,068 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 04:27:10,071 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-24.i that has 2 procedures, 177 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 04:27:10,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 04:27:10,127 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;@6dab8b01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 04:27:10,127 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 04:27:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 130 states have (on average 1.5307692307692307) internal successors, (199), 131 states have internal predecessors, (199), 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 04:27:10,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2025-03-17 04:27:10,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:10,151 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] [2025-03-17 04:27:10,151 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:10,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:10,156 INFO L85 PathProgramCache]: Analyzing trace with hash 352367068, now seen corresponding path program 1 times [2025-03-17 04:27:10,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:10,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324724700] [2025-03-17 04:27:10,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:10,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:10,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-03-17 04:27:10,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-03-17 04:27:10,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:10,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:10,533 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 04:27:10,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:10,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324724700] [2025-03-17 04:27:10,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324724700] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:10,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304922500] [2025-03-17 04:27:10,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:10,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:10,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:10,538 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 04:27:10,540 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 04:27:10,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-03-17 04:27:10,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-03-17 04:27:10,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:10,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:10,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 04:27:10,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:27:10,804 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 04:27:10,805 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 04:27:10,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304922500] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:10,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:27:10,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 04:27:10,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576638851] [2025-03-17 04:27:10,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:10,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 04:27:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:10,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 04:27:10,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:27:10,825 INFO L87 Difference]: Start difference. First operand has 177 states, 130 states have (on average 1.5307692307692307) internal successors, (199), 131 states have internal predecessors, (199), 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 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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 04:27:10,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:10,861 INFO L93 Difference]: Finished difference Result 351 states and 616 transitions. [2025-03-17 04:27:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 04:27:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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 295 [2025-03-17 04:27:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:10,868 INFO L225 Difference]: With dead ends: 351 [2025-03-17 04:27:10,868 INFO L226 Difference]: Without dead ends: 175 [2025-03-17 04:27:10,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 296 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 04:27:10,874 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:10,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:27:10,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-03-17 04:27:10,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2025-03-17 04:27:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.5116279069767442) internal successors, (195), 129 states have internal predecessors, (195), 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 04:27:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 283 transitions. [2025-03-17 04:27:10,924 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 283 transitions. Word has length 295 [2025-03-17 04:27:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:10,925 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 283 transitions. [2025-03-17 04:27:10,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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 04:27:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 283 transitions. [2025-03-17 04:27:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2025-03-17 04:27:10,932 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:10,932 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] [2025-03-17 04:27:10,939 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 04:27:11,133 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 04:27:11,134 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:11,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash -19888044, now seen corresponding path program 1 times [2025-03-17 04:27:11,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:11,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485260677] [2025-03-17 04:27:11,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:11,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:11,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-03-17 04:27:11,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-03-17 04:27:11,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:11,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:11,518 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 04:27:11,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:11,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485260677] [2025-03-17 04:27:11,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485260677] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:11,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:11,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:27:11,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668723550] [2025-03-17 04:27:11,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:11,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:27:11,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:11,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:27:11,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:27:11,521 INFO L87 Difference]: Start difference. First operand 175 states and 283 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 04:27:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:11,779 INFO L93 Difference]: Finished difference Result 524 states and 848 transitions. [2025-03-17 04:27:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:27:11,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 295 [2025-03-17 04:27:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:11,786 INFO L225 Difference]: With dead ends: 524 [2025-03-17 04:27:11,786 INFO L226 Difference]: Without dead ends: 350 [2025-03-17 04:27:11,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:27:11,788 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 216 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:11,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 804 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:27:11,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2025-03-17 04:27:11,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 259. [2025-03-17 04:27:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 168 states have (on average 1.4226190476190477) internal successors, (239), 168 states have internal predecessors, (239), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-03-17 04:27:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 415 transitions. [2025-03-17 04:27:11,835 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 415 transitions. Word has length 295 [2025-03-17 04:27:11,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:11,837 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 415 transitions. [2025-03-17 04:27:11,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 04:27:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 415 transitions. [2025-03-17 04:27:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2025-03-17 04:27:11,843 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:11,843 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] [2025-03-17 04:27:11,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 04:27:11,844 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:11,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:11,844 INFO L85 PathProgramCache]: Analyzing trace with hash 894802949, now seen corresponding path program 1 times [2025-03-17 04:27:11,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:11,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794769956] [2025-03-17 04:27:11,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:11,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:11,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 296 statements into 1 equivalence classes. [2025-03-17 04:27:11,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 296 of 296 statements. [2025-03-17 04:27:11,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:11,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:12,032 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 04:27:12,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:12,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794769956] [2025-03-17 04:27:12,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794769956] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:12,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:12,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:27:12,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510539868] [2025-03-17 04:27:12,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:12,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:27:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:12,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:27:12,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:27:12,035 INFO L87 Difference]: Start difference. First operand 259 states and 415 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 04:27:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:12,132 INFO L93 Difference]: Finished difference Result 591 states and 949 transitions. [2025-03-17 04:27:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:27:12,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 296 [2025-03-17 04:27:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:12,136 INFO L225 Difference]: With dead ends: 591 [2025-03-17 04:27:12,136 INFO L226 Difference]: Without dead ends: 417 [2025-03-17 04:27:12,137 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 04:27:12,138 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 249 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:12,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 656 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:27:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2025-03-17 04:27:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 314. [2025-03-17 04:27:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 223 states have (on average 1.4439461883408071) internal successors, (322), 223 states have internal predecessors, (322), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-03-17 04:27:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 498 transitions. [2025-03-17 04:27:12,179 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 498 transitions. Word has length 296 [2025-03-17 04:27:12,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:12,180 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 498 transitions. [2025-03-17 04:27:12,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 04:27:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 498 transitions. [2025-03-17 04:27:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2025-03-17 04:27:12,183 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:12,183 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] [2025-03-17 04:27:12,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 04:27:12,183 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:12,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1586752185, now seen corresponding path program 1 times [2025-03-17 04:27:12,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:12,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963708612] [2025-03-17 04:27:12,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:12,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:12,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 296 statements into 1 equivalence classes. [2025-03-17 04:27:12,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 296 of 296 statements. [2025-03-17 04:27:12,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:12,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:12,362 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 04:27:12,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:12,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963708612] [2025-03-17 04:27:12,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963708612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:12,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:12,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:27:12,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246688063] [2025-03-17 04:27:12,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:12,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:27:12,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:12,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:27:12,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:27:12,365 INFO L87 Difference]: Start difference. First operand 314 states and 498 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 04:27:12,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:12,474 INFO L93 Difference]: Finished difference Result 646 states and 1022 transitions. [2025-03-17 04:27:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:27:12,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 296 [2025-03-17 04:27:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:12,482 INFO L225 Difference]: With dead ends: 646 [2025-03-17 04:27:12,482 INFO L226 Difference]: Without dead ends: 417 [2025-03-17 04:27:12,486 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 04:27:12,487 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 245 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:12,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 484 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:27:12,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2025-03-17 04:27:12,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 314. [2025-03-17 04:27:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 223 states have (on average 1.399103139013453) internal successors, (312), 223 states have internal predecessors, (312), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-03-17 04:27:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 488 transitions. [2025-03-17 04:27:12,528 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 488 transitions. Word has length 296 [2025-03-17 04:27:12,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:12,529 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 488 transitions. [2025-03-17 04:27:12,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 04:27:12,530 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 488 transitions. [2025-03-17 04:27:12,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-17 04:27:12,533 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:12,534 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 04:27:12,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 04:27:12,534 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:12,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:12,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1371728401, now seen corresponding path program 1 times [2025-03-17 04:27:12,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:12,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665025873] [2025-03-17 04:27:12,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:12,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:12,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:27:12,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:27:12,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:12,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:12,819 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 04:27:12,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:12,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665025873] [2025-03-17 04:27:12,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665025873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:12,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:12,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:27:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208467758] [2025-03-17 04:27:12,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:12,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:27:12,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:12,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:27:12,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:27:12,823 INFO L87 Difference]: Start difference. First operand 314 states and 488 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 04:27:12,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:12,898 INFO L93 Difference]: Finished difference Result 773 states and 1199 transitions. [2025-03-17 04:27:12,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:27:12,899 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 04:27:12,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:12,906 INFO L225 Difference]: With dead ends: 773 [2025-03-17 04:27:12,907 INFO L226 Difference]: Without dead ends: 544 [2025-03-17 04:27:12,908 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 04:27:12,908 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 187 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:12,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 519 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:27:12,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2025-03-17 04:27:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 540. [2025-03-17 04:27:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 404 states have (on average 1.4183168316831682) internal successors, (573), 404 states have internal predecessors, (573), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2025-03-17 04:27:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 837 transitions. [2025-03-17 04:27:12,951 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 837 transitions. Word has length 297 [2025-03-17 04:27:12,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:12,951 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 837 transitions. [2025-03-17 04:27:12,952 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 04:27:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 837 transitions. [2025-03-17 04:27:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-17 04:27:12,956 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:12,956 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 04:27:12,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 04:27:12,958 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:12,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1897746896, now seen corresponding path program 1 times [2025-03-17 04:27:12,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:12,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643093780] [2025-03-17 04:27:12,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:12,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:12,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:27:13,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:27:13,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:13,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:14,063 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 04:27:14,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:14,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643093780] [2025-03-17 04:27:14,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643093780] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:14,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:14,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:27:14,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803905814] [2025-03-17 04:27:14,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:14,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:27:14,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:14,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:27:14,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:27:14,066 INFO L87 Difference]: Start difference. First operand 540 states and 837 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-17 04:27:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:14,351 INFO L93 Difference]: Finished difference Result 1448 states and 2243 transitions. [2025-03-17 04:27:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:27:14,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 297 [2025-03-17 04:27:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:14,357 INFO L225 Difference]: With dead ends: 1448 [2025-03-17 04:27:14,357 INFO L226 Difference]: Without dead ends: 994 [2025-03-17 04:27:14,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:27:14,360 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 361 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:14,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 685 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:27:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2025-03-17 04:27:14,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 990. [2025-03-17 04:27:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 764 states have (on average 1.425392670157068) internal successors, (1089), 764 states have internal predecessors, (1089), 220 states have call successors, (220), 5 states have call predecessors, (220), 5 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2025-03-17 04:27:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1529 transitions. [2025-03-17 04:27:14,440 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1529 transitions. Word has length 297 [2025-03-17 04:27:14,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:14,441 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1529 transitions. [2025-03-17 04:27:14,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-17 04:27:14,441 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1529 transitions. [2025-03-17 04:27:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-17 04:27:14,444 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:14,444 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 04:27:14,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 04:27:14,444 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:14,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:14,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1866727089, now seen corresponding path program 1 times [2025-03-17 04:27:14,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:14,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680082846] [2025-03-17 04:27:14,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:14,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:14,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:27:14,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:27:14,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:14,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:15,060 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 04:27:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680082846] [2025-03-17 04:27:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680082846] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:15,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:15,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 04:27:15,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380111571] [2025-03-17 04:27:15,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:15,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 04:27:15,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:15,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 04:27:15,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:27:15,062 INFO L87 Difference]: Start difference. First operand 990 states and 1529 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 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 04:27:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:15,520 INFO L93 Difference]: Finished difference Result 2686 states and 4094 transitions. [2025-03-17 04:27:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 04:27:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 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 04:27:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:15,529 INFO L225 Difference]: With dead ends: 2686 [2025-03-17 04:27:15,529 INFO L226 Difference]: Without dead ends: 1782 [2025-03-17 04:27:15,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:27:15,532 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 192 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:15,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1235 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 04:27:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2025-03-17 04:27:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1610. [2025-03-17 04:27:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1360 states have (on average 1.4419117647058823) internal successors, (1961), 1364 states have internal predecessors, (1961), 240 states have call successors, (240), 9 states have call predecessors, (240), 9 states have return successors, (240), 236 states have call predecessors, (240), 240 states have call successors, (240) [2025-03-17 04:27:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2441 transitions. [2025-03-17 04:27:15,613 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2441 transitions. Word has length 297 [2025-03-17 04:27:15,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:15,614 INFO L471 AbstractCegarLoop]: Abstraction has 1610 states and 2441 transitions. [2025-03-17 04:27:15,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 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 04:27:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2441 transitions. [2025-03-17 04:27:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-17 04:27:15,618 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:15,618 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 04:27:15,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 04:27:15,618 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:15,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:15,619 INFO L85 PathProgramCache]: Analyzing trace with hash 330472240, now seen corresponding path program 1 times [2025-03-17 04:27:15,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:15,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645030206] [2025-03-17 04:27:15,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:15,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:15,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:27:15,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:27:15,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:15,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:16,164 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 04:27:16,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645030206] [2025-03-17 04:27:16,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645030206] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413356197] [2025-03-17 04:27:16,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:16,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:16,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:16,167 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 04:27:16,169 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 04:27:16,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:27:16,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:27:16,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:16,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:16,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 04:27:16,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:27:17,039 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 04:27:17,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:27:17,349 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 04:27:17,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413356197] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:27:17,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:27:17,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2025-03-17 04:27:17,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558041265] [2025-03-17 04:27:17,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:27:17,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 04:27:17,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:17,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 04:27:17,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-03-17 04:27:17,352 INFO L87 Difference]: Start difference. First operand 1610 states and 2441 transitions. Second operand has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 5 states have call successors, (132) [2025-03-17 04:27:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:18,165 INFO L93 Difference]: Finished difference Result 4990 states and 7515 transitions. [2025-03-17 04:27:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 04:27:18,166 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 5 states have call successors, (132) Word has length 297 [2025-03-17 04:27:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:18,183 INFO L225 Difference]: With dead ends: 4990 [2025-03-17 04:27:18,183 INFO L226 Difference]: Without dead ends: 3466 [2025-03-17 04:27:18,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2025-03-17 04:27:18,190 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1276 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:18,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 1392 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 04:27:18,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2025-03-17 04:27:18,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 1626. [2025-03-17 04:27:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1375 states have (on average 1.442909090909091) internal successors, (1984), 1379 states have internal predecessors, (1984), 240 states have call successors, (240), 10 states have call predecessors, (240), 10 states have return successors, (240), 236 states have call predecessors, (240), 240 states have call successors, (240) [2025-03-17 04:27:18,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2464 transitions. [2025-03-17 04:27:18,298 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2464 transitions. Word has length 297 [2025-03-17 04:27:18,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:18,299 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2464 transitions. [2025-03-17 04:27:18,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 states have internal predecessors, (161), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 5 states have call successors, (132) [2025-03-17 04:27:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2464 transitions. [2025-03-17 04:27:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-17 04:27:18,305 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:18,305 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 04:27:18,313 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 04:27:18,509 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,SelfDestructingSolverStorable7 [2025-03-17 04:27:18,509 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:18,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1792052239, now seen corresponding path program 1 times [2025-03-17 04:27:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427627027] [2025-03-17 04:27:18,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:18,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:27:18,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:27:18,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:18,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 90 proven. 39 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-17 04:27:19,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:19,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427627027] [2025-03-17 04:27:19,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427627027] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:19,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603306482] [2025-03-17 04:27:19,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:19,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:19,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:19,324 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 04:27:19,326 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 04:27:19,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:27:19,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:27:19,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:19,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:19,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-17 04:27:19,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:27:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2056 proven. 174 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2025-03-17 04:27:20,345 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:27:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 306 proven. 192 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2025-03-17 04:27:21,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603306482] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:27:21,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:27:21,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 18] total 39 [2025-03-17 04:27:21,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566740466] [2025-03-17 04:27:21,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:27:21,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-03-17 04:27:21,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:21,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-03-17 04:27:21,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1253, Unknown=0, NotChecked=0, Total=1482 [2025-03-17 04:27:21,673 INFO L87 Difference]: Start difference. First operand 1626 states and 2464 transitions. Second operand has 39 states, 36 states have (on average 5.555555555555555) internal successors, (200), 35 states have internal predecessors, (200), 13 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 13 states have call successors, (119) [2025-03-17 04:27:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:30,515 INFO L93 Difference]: Finished difference Result 9196 states and 13339 transitions. [2025-03-17 04:27:30,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2025-03-17 04:27:30,516 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 5.555555555555555) internal successors, (200), 35 states have internal predecessors, (200), 13 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 13 states have call successors, (119) Word has length 297 [2025-03-17 04:27:30,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:30,543 INFO L225 Difference]: With dead ends: 9196 [2025-03-17 04:27:30,543 INFO L226 Difference]: Without dead ends: 7668 [2025-03-17 04:27:30,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16161 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=6585, Invalid=35235, Unknown=0, NotChecked=0, Total=41820 [2025-03-17 04:27:30,554 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 6546 mSDsluCounter, 4340 mSDsCounter, 0 mSdLazyCounter, 4389 mSolverCounterSat, 2400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6559 SdHoareTripleChecker+Valid, 4718 SdHoareTripleChecker+Invalid, 6789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2400 IncrementalHoareTripleChecker+Valid, 4389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:30,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6559 Valid, 4718 Invalid, 6789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2400 Valid, 4389 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-03-17 04:27:30,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7668 states. [2025-03-17 04:27:30,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7668 to 3738. [2025-03-17 04:27:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3738 states, 3044 states have (on average 1.3938896189224705) internal successors, (4243), 3056 states have internal predecessors, (4243), 612 states have call successors, (612), 81 states have call predecessors, (612), 81 states have return successors, (612), 600 states have call predecessors, (612), 612 states have call successors, (612) [2025-03-17 04:27:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 5467 transitions. [2025-03-17 04:27:30,815 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 5467 transitions. Word has length 297 [2025-03-17 04:27:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:30,816 INFO L471 AbstractCegarLoop]: Abstraction has 3738 states and 5467 transitions. [2025-03-17 04:27:30,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 5.555555555555555) internal successors, (200), 35 states have internal predecessors, (200), 13 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 13 states have call successors, (119) [2025-03-17 04:27:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 5467 transitions. [2025-03-17 04:27:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-17 04:27:30,821 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:30,821 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 04:27:30,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 04:27:31,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:31,026 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:31,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:31,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1935216783, now seen corresponding path program 1 times [2025-03-17 04:27:31,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:31,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419940234] [2025-03-17 04:27:31,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:31,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:31,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-17 04:27:31,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-17 04:27:31,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:31,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:31,176 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 04:27:31,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:31,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419940234] [2025-03-17 04:27:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419940234] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:31,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:31,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:27:31,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450666481] [2025-03-17 04:27:31,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:31,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:27:31,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:31,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:27:31,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:27:31,179 INFO L87 Difference]: Start difference. First operand 3738 states and 5467 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 04:27:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:31,368 INFO L93 Difference]: Finished difference Result 7346 states and 10758 transitions. [2025-03-17 04:27:31,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:27:31,370 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 04:27:31,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:31,386 INFO L225 Difference]: With dead ends: 7346 [2025-03-17 04:27:31,386 INFO L226 Difference]: Without dead ends: 3738 [2025-03-17 04:27:31,393 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 04:27:31,394 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 57 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:31,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 519 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:27:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2025-03-17 04:27:31,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3738. [2025-03-17 04:27:31,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3738 states, 3044 states have (on average 1.3899474375821288) internal successors, (4231), 3056 states have internal predecessors, (4231), 612 states have call successors, (612), 81 states have call predecessors, (612), 81 states have return successors, (612), 600 states have call predecessors, (612), 612 states have call successors, (612) [2025-03-17 04:27:31,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 5455 transitions. [2025-03-17 04:27:31,599 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 5455 transitions. Word has length 297 [2025-03-17 04:27:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:31,600 INFO L471 AbstractCegarLoop]: Abstraction has 3738 states and 5455 transitions. [2025-03-17 04:27:31,600 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 04:27:31,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 5455 transitions. [2025-03-17 04:27:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2025-03-17 04:27:31,604 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:31,604 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 04:27:31,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 04:27:31,604 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:31,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash 476214345, now seen corresponding path program 1 times [2025-03-17 04:27:31,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:31,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139215819] [2025-03-17 04:27:31,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:31,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:31,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-03-17 04:27:31,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-03-17 04:27:31,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:31,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:32,731 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 04:27:32,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:32,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139215819] [2025-03-17 04:27:32,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139215819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:32,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:32,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 04:27:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411156112] [2025-03-17 04:27:32,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:32,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 04:27:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:32,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 04:27:32,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-17 04:27:32,733 INFO L87 Difference]: Start difference. First operand 3738 states and 5455 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2025-03-17 04:27:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:34,311 INFO L93 Difference]: Finished difference Result 13910 states and 20285 transitions. [2025-03-17 04:27:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 04:27:34,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 298 [2025-03-17 04:27:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:34,354 INFO L225 Difference]: With dead ends: 13910 [2025-03-17 04:27:34,354 INFO L226 Difference]: Without dead ends: 10302 [2025-03-17 04:27:34,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2025-03-17 04:27:34,364 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 1669 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:34,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 1977 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 04:27:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10302 states. [2025-03-17 04:27:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10302 to 6368. [2025-03-17 04:27:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6368 states, 5272 states have (on average 1.399658573596358) internal successors, (7379), 5284 states have internal predecessors, (7379), 964 states have call successors, (964), 131 states have call predecessors, (964), 131 states have return successors, (964), 952 states have call predecessors, (964), 964 states have call successors, (964) [2025-03-17 04:27:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6368 states to 6368 states and 9307 transitions. [2025-03-17 04:27:34,757 INFO L78 Accepts]: Start accepts. Automaton has 6368 states and 9307 transitions. Word has length 298 [2025-03-17 04:27:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:34,758 INFO L471 AbstractCegarLoop]: Abstraction has 6368 states and 9307 transitions. [2025-03-17 04:27:34,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2025-03-17 04:27:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand 6368 states and 9307 transitions. [2025-03-17 04:27:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2025-03-17 04:27:34,763 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:34,763 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 04:27:34,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 04:27:34,764 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:34,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1175695056, now seen corresponding path program 1 times [2025-03-17 04:27:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:34,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630065415] [2025-03-17 04:27:34,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:34,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:34,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-03-17 04:27:34,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-03-17 04:27:34,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:34,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:36,353 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 04:27:36,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:36,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630065415] [2025-03-17 04:27:36,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630065415] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:36,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285602934] [2025-03-17 04:27:36,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:36,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:36,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:36,356 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 04:27:36,358 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 04:27:36,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-03-17 04:27:36,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-03-17 04:27:36,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:36,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:36,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-17 04:27:36,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:27:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1695 proven. 252 refuted. 0 times theorem prover too weak. 1837 trivial. 0 not checked. [2025-03-17 04:27:37,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:27:39,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285602934] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:39,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 04:27:39,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 24 [2025-03-17 04:27:39,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435806663] [2025-03-17 04:27:39,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 04:27:39,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 04:27:39,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:39,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 04:27:39,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2025-03-17 04:27:39,005 INFO L87 Difference]: Start difference. First operand 6368 states and 9307 transitions. Second operand has 24 states, 23 states have (on average 6.869565217391305) internal successors, (158), 22 states have internal predecessors, (158), 7 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 6 states have call predecessors, (88), 7 states have call successors, (88) [2025-03-17 04:27:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:41,187 INFO L93 Difference]: Finished difference Result 22100 states and 32019 transitions. [2025-03-17 04:27:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-17 04:27:41,188 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.869565217391305) internal successors, (158), 22 states have internal predecessors, (158), 7 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 6 states have call predecessors, (88), 7 states have call successors, (88) Word has length 298 [2025-03-17 04:27:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:41,229 INFO L225 Difference]: With dead ends: 22100 [2025-03-17 04:27:41,229 INFO L226 Difference]: Without dead ends: 15878 [2025-03-17 04:27:41,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=788, Invalid=2634, Unknown=0, NotChecked=0, Total=3422 [2025-03-17 04:27:41,245 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 1146 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:41,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 2376 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 04:27:41,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15878 states. [2025-03-17 04:27:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15878 to 14804. [2025-03-17 04:27:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14804 states, 12307 states have (on average 1.3719021694970341) internal successors, (16884), 12359 states have internal predecessors, (16884), 2184 states have call successors, (2184), 312 states have call predecessors, (2184), 312 states have return successors, (2184), 2132 states have call predecessors, (2184), 2184 states have call successors, (2184) [2025-03-17 04:27:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14804 states to 14804 states and 21252 transitions. [2025-03-17 04:27:42,209 INFO L78 Accepts]: Start accepts. Automaton has 14804 states and 21252 transitions. Word has length 298 [2025-03-17 04:27:42,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:42,210 INFO L471 AbstractCegarLoop]: Abstraction has 14804 states and 21252 transitions. [2025-03-17 04:27:42,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.869565217391305) internal successors, (158), 22 states have internal predecessors, (158), 7 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 6 states have call predecessors, (88), 7 states have call successors, (88) [2025-03-17 04:27:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 14804 states and 21252 transitions. [2025-03-17 04:27:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2025-03-17 04:27:42,219 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:42,219 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 04:27:42,228 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 04:27:42,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:42,420 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:42,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:42,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1322320881, now seen corresponding path program 1 times [2025-03-17 04:27:42,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:42,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777983302] [2025-03-17 04:27:42,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:42,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:42,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-03-17 04:27:42,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-03-17 04:27:42,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:42,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:43,150 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 04:27:43,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777983302] [2025-03-17 04:27:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777983302] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097775132] [2025-03-17 04:27:43,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:43,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:43,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:43,153 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 04:27:43,154 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 04:27:43,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-03-17 04:27:43,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-03-17 04:27:43,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:43,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:43,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-17 04:27:43,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:27:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2001 proven. 324 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2025-03-17 04:27:44,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:28:00,122 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-17 04:28:08,169 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-17 04:28:20,238 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-17 04:28:28,283 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)