./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.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-99.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 488e55d188f50c80d73146c130bc528a02bef0b3d213155fb7178728f7b142f2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 04:35:53,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 04:35:53,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 04:35:53,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 04:35:53,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 04:35:53,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 04:35:53,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 04:35:53,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 04:35:53,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 04:35:53,909 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 04:35:53,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 04:35:53,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 04:35:53,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 04:35:53,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 04:35:53,911 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 04:35:53,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 04:35:53,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 04:35:53,911 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 04:35:53,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 04:35:53,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 04:35:53,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 04:35:53,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 04:35:53,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 04:35:53,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 04:35:53,912 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 04:35:53,912 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 04:35:53,912 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 04:35:53,912 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 04:35:53,912 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 04:35:53,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:35:53,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 04:35:53,913 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 04:35:53,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 04:35:53,914 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 -> 488e55d188f50c80d73146c130bc528a02bef0b3d213155fb7178728f7b142f2 [2025-03-17 04:35:54,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 04:35:54,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 04:35:54,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 04:35:54,161 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 04:35:54,161 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 04:35:54,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i [2025-03-17 04:35:55,370 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9b070be/66e3b4cdefdb47b7ba3d1ecd377cfe78/FLAG2d235fd3e [2025-03-17 04:35:55,713 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 04:35:55,714 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i [2025-03-17 04:35:55,728 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9b070be/66e3b4cdefdb47b7ba3d1ecd377cfe78/FLAG2d235fd3e [2025-03-17 04:35:55,956 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9b070be/66e3b4cdefdb47b7ba3d1ecd377cfe78 [2025-03-17 04:35:55,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 04:35:55,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 04:35:55,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 04:35:55,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 04:35:55,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 04:35:55,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:35:55" (1/1) ... [2025-03-17 04:35:55,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf0269b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:55, skipping insertion in model container [2025-03-17 04:35:55,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:35:55" (1/1) ... [2025-03-17 04:35:56,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 04:35:56,129 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-99.i[916,929] [2025-03-17 04:35:56,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:35:56,302 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 04:35:56,311 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-99.i[916,929] [2025-03-17 04:35:56,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:35:56,400 INFO L204 MainTranslator]: Completed translation [2025-03-17 04:35:56,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56 WrapperNode [2025-03-17 04:35:56,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 04:35:56,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 04:35:56,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 04:35:56,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 04:35:56,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,486 INFO L138 Inliner]: procedures = 26, calls = 72, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 434 [2025-03-17 04:35:56,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 04:35:56,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 04:35:56,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 04:35:56,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 04:35:56,493 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,508 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,548 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 04:35:56,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,576 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,581 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 04:35:56,612 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 04:35:56,613 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 04:35:56,613 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 04:35:56,614 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (1/1) ... [2025-03-17 04:35:56,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:35:56,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:35:56,639 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 04:35:56,665 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 04:35:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 04:35:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 04:35:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 04:35:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 04:35:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 04:35:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 04:35:56,781 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 04:35:56,783 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 04:35:57,415 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L393: havoc property_#t~ite42#1;havoc property_#t~bitwise41#1;havoc property_#t~short43#1;havoc property_#t~bitwise44#1;havoc property_#t~short45#1; [2025-03-17 04:35:57,512 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2025-03-17 04:35:57,513 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 04:35:57,529 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 04:35:57,529 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 04:35:57,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:35:57 BoogieIcfgContainer [2025-03-17 04:35:57,530 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 04:35:57,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 04:35:57,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 04:35:57,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 04:35:57,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:35:55" (1/3) ... [2025-03-17 04:35:57,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b980e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:35:57, skipping insertion in model container [2025-03-17 04:35:57,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:35:56" (2/3) ... [2025-03-17 04:35:57,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b980e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:35:57, skipping insertion in model container [2025-03-17 04:35:57,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:35:57" (3/3) ... [2025-03-17 04:35:57,538 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-99.i [2025-03-17 04:35:57,551 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 04:35:57,554 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-99.i that has 2 procedures, 184 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 04:35:57,602 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 04:35:57,612 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;@18c978aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 04:35:57,612 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 04:35:57,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 122 states have (on average 1.4918032786885247) internal successors, (182), 123 states have internal predecessors, (182), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-03-17 04:35:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2025-03-17 04:35:57,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:35:57,634 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:35:57,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:35:57,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:35:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash 780510353, now seen corresponding path program 1 times [2025-03-17 04:35:57,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:35:57,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988344258] [2025-03-17 04:35:57,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:35:57,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:35:57,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 375 statements into 1 equivalence classes. [2025-03-17 04:35:57,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 375 of 375 statements. [2025-03-17 04:35:57,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:35:57,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:35:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2025-03-17 04:35:58,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:35:58,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988344258] [2025-03-17 04:35:58,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988344258] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:35:58,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867380948] [2025-03-17 04:35:58,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:35:58,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:35:58,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:35:58,195 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 04:35:58,197 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 04:35:58,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 375 statements into 1 equivalence classes. [2025-03-17 04:35:58,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 375 of 375 statements. [2025-03-17 04:35:58,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:35:58,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:35:58,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 04:35:58,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:35:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2025-03-17 04:35:58,544 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 04:35:58,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867380948] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:35:58,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:35:58,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 04:35:58,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111784862] [2025-03-17 04:35:58,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:35:58,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 04:35:58,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:35:58,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 04:35:58,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:35:58,573 INFO L87 Difference]: Start difference. First operand has 184 states, 122 states have (on average 1.4918032786885247) internal successors, (182), 123 states have internal predecessors, (182), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) [2025-03-17 04:35:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:35:58,627 INFO L93 Difference]: Finished difference Result 365 states and 657 transitions. [2025-03-17 04:35:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 04:35:58,630 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) Word has length 375 [2025-03-17 04:35:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:35:58,637 INFO L225 Difference]: With dead ends: 365 [2025-03-17 04:35:58,637 INFO L226 Difference]: Without dead ends: 182 [2025-03-17 04:35:58,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 376 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 04:35:58,644 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:35:58,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:35:58,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2025-03-17 04:35:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2025-03-17 04:35:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 121 states have (on average 1.462809917355372) internal successors, (177), 121 states have internal predecessors, (177), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-03-17 04:35:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 295 transitions. [2025-03-17 04:35:58,720 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 295 transitions. Word has length 375 [2025-03-17 04:35:58,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:35:58,720 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 295 transitions. [2025-03-17 04:35:58,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) [2025-03-17 04:35:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 295 transitions. [2025-03-17 04:35:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2025-03-17 04:35:58,730 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:35:58,730 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:35:58,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 04:35:58,935 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 04:35:58,935 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:35:58,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:35:58,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1793906716, now seen corresponding path program 1 times [2025-03-17 04:35:58,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:35:58,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533783412] [2025-03-17 04:35:58,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:35:58,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:35:58,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 375 statements into 1 equivalence classes. [2025-03-17 04:35:59,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 375 of 375 statements. [2025-03-17 04:35:59,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:35:59,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:35:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-03-17 04:35:59,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:35:59,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533783412] [2025-03-17 04:35:59,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533783412] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:35:59,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:35:59,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:35:59,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266128118] [2025-03-17 04:35:59,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:35:59,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:35:59,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:35:59,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:35:59,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:35:59,303 INFO L87 Difference]: Start difference. First operand 182 states and 295 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:35:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:35:59,465 INFO L93 Difference]: Finished difference Result 538 states and 872 transitions. [2025-03-17 04:35:59,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:35:59,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 375 [2025-03-17 04:35:59,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:35:59,473 INFO L225 Difference]: With dead ends: 538 [2025-03-17 04:35:59,473 INFO L226 Difference]: Without dead ends: 357 [2025-03-17 04:35:59,475 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 04:35:59,475 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 267 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:35:59,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 710 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:35:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2025-03-17 04:35:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 230. [2025-03-17 04:35:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 169 states have (on average 1.514792899408284) internal successors, (256), 169 states have internal predecessors, (256), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-03-17 04:35:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 374 transitions. [2025-03-17 04:35:59,515 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 374 transitions. Word has length 375 [2025-03-17 04:35:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:35:59,518 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 374 transitions. [2025-03-17 04:35:59,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:35:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 374 transitions. [2025-03-17 04:35:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2025-03-17 04:35:59,526 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:35:59,526 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:35:59,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 04:35:59,527 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:35:59,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:35:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1347586343, now seen corresponding path program 1 times [2025-03-17 04:35:59,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:35:59,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656003598] [2025-03-17 04:35:59,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:35:59,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:35:59,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 376 statements into 1 equivalence classes. [2025-03-17 04:35:59,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 376 of 376 statements. [2025-03-17 04:35:59,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:35:59,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-03-17 04:36:00,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656003598] [2025-03-17 04:36:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656003598] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:36:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:36:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:36:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904749912] [2025-03-17 04:36:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:36:00,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:36:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:00,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:36:00,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:36:00,287 INFO L87 Difference]: Start difference. First operand 230 states and 374 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:36:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:00,390 INFO L93 Difference]: Finished difference Result 637 states and 1028 transitions. [2025-03-17 04:36:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:36:00,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 376 [2025-03-17 04:36:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:00,395 INFO L225 Difference]: With dead ends: 637 [2025-03-17 04:36:00,395 INFO L226 Difference]: Without dead ends: 408 [2025-03-17 04:36:00,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:36:00,396 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 159 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:00,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 630 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:36:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2025-03-17 04:36:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 406. [2025-03-17 04:36:00,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 285 states have (on average 1.4526315789473685) internal successors, (414), 285 states have internal predecessors, (414), 118 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2025-03-17 04:36:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 650 transitions. [2025-03-17 04:36:00,495 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 650 transitions. Word has length 376 [2025-03-17 04:36:00,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:00,498 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 650 transitions. [2025-03-17 04:36:00,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:36:00,499 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 650 transitions. [2025-03-17 04:36:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2025-03-17 04:36:00,506 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:00,506 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:00,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 04:36:00,507 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:00,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1314576954, now seen corresponding path program 1 times [2025-03-17 04:36:00,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:00,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363594378] [2025-03-17 04:36:00,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:00,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:00,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 376 statements into 1 equivalence classes. [2025-03-17 04:36:00,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 376 of 376 statements. [2025-03-17 04:36:00,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:00,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-03-17 04:36:01,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:01,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363594378] [2025-03-17 04:36:01,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363594378] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:36:01,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:36:01,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:36:01,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50316323] [2025-03-17 04:36:01,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:36:01,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:36:01,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:01,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:36:01,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:36:01,055 INFO L87 Difference]: Start difference. First operand 406 states and 650 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:36:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:01,202 INFO L93 Difference]: Finished difference Result 1210 states and 1936 transitions. [2025-03-17 04:36:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:36:01,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 376 [2025-03-17 04:36:01,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:01,210 INFO L225 Difference]: With dead ends: 1210 [2025-03-17 04:36:01,210 INFO L226 Difference]: Without dead ends: 805 [2025-03-17 04:36:01,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:36:01,213 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 166 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:01,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 621 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:36:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2025-03-17 04:36:01,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 800. [2025-03-17 04:36:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 559 states have (on average 1.4400715563506261) internal successors, (805), 559 states have internal predecessors, (805), 236 states have call successors, (236), 4 states have call predecessors, (236), 4 states have return successors, (236), 236 states have call predecessors, (236), 236 states have call successors, (236) [2025-03-17 04:36:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1277 transitions. [2025-03-17 04:36:01,308 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1277 transitions. Word has length 376 [2025-03-17 04:36:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:01,309 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 1277 transitions. [2025-03-17 04:36:01,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:36:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1277 transitions. [2025-03-17 04:36:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2025-03-17 04:36:01,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:01,315 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:01,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 04:36:01,316 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:01,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1531832593, now seen corresponding path program 1 times [2025-03-17 04:36:01,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:01,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577507940] [2025-03-17 04:36:01,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:01,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:01,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 377 statements into 1 equivalence classes. [2025-03-17 04:36:01,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 377 of 377 statements. [2025-03-17 04:36:01,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:01,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-03-17 04:36:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577507940] [2025-03-17 04:36:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577507940] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:36:04,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:36:04,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 04:36:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786423271] [2025-03-17 04:36:04,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:36:04,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 04:36:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:04,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 04:36:04,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:36:04,100 INFO L87 Difference]: Start difference. First operand 800 states and 1277 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:36:05,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:05,770 INFO L93 Difference]: Finished difference Result 2465 states and 3886 transitions. [2025-03-17 04:36:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 04:36:05,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 377 [2025-03-17 04:36:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:05,779 INFO L225 Difference]: With dead ends: 2465 [2025-03-17 04:36:05,779 INFO L226 Difference]: Without dead ends: 1666 [2025-03-17 04:36:05,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-03-17 04:36:05,783 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 419 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:05,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1617 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 04:36:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2025-03-17 04:36:05,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1286. [2025-03-17 04:36:05,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1033 states have (on average 1.5091965150048403) internal successors, (1559), 1037 states have internal predecessors, (1559), 244 states have call successors, (244), 8 states have call predecessors, (244), 8 states have return successors, (244), 240 states have call predecessors, (244), 244 states have call successors, (244) [2025-03-17 04:36:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2047 transitions. [2025-03-17 04:36:05,890 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2047 transitions. Word has length 377 [2025-03-17 04:36:05,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:05,891 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 2047 transitions. [2025-03-17 04:36:05,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:36:05,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2047 transitions. [2025-03-17 04:36:05,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2025-03-17 04:36:05,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:05,899 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:05,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 04:36:05,899 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:05,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2070033006, now seen corresponding path program 1 times [2025-03-17 04:36:05,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:05,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816471293] [2025-03-17 04:36:05,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:05,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:05,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 377 statements into 1 equivalence classes. [2025-03-17 04:36:06,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 377 of 377 statements. [2025-03-17 04:36:06,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:06,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:06,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:06,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816471293] [2025-03-17 04:36:06,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816471293] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:36:06,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362922425] [2025-03-17 04:36:06,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:06,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:06,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:36:06,818 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 04:36:06,824 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 04:36:06,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 377 statements into 1 equivalence classes. [2025-03-17 04:36:07,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 377 of 377 statements. [2025-03-17 04:36:07,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:07,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:07,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 04:36:07,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:36:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3408 proven. 99 refuted. 0 times theorem prover too weak. 3337 trivial. 0 not checked. [2025-03-17 04:36:07,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:36:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 75 proven. 99 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:07,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362922425] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:36:07,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:36:07,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-03-17 04:36:07,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959579004] [2025-03-17 04:36:07,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:36:07,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 04:36:07,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:07,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 04:36:07,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:36:07,901 INFO L87 Difference]: Start difference. First operand 1286 states and 2047 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2025-03-17 04:36:08,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:08,442 INFO L93 Difference]: Finished difference Result 2635 states and 4149 transitions. [2025-03-17 04:36:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 04:36:08,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) Word has length 377 [2025-03-17 04:36:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:08,451 INFO L225 Difference]: With dead ends: 2635 [2025-03-17 04:36:08,451 INFO L226 Difference]: Without dead ends: 1350 [2025-03-17 04:36:08,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 751 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2025-03-17 04:36:08,455 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 482 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:08,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 541 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 04:36:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2025-03-17 04:36:08,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1318. [2025-03-17 04:36:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1057 states have (on average 1.4739829706717125) internal successors, (1558), 1061 states have internal predecessors, (1558), 244 states have call successors, (244), 16 states have call predecessors, (244), 16 states have return successors, (244), 240 states have call predecessors, (244), 244 states have call successors, (244) [2025-03-17 04:36:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2046 transitions. [2025-03-17 04:36:08,532 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2046 transitions. Word has length 377 [2025-03-17 04:36:08,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:08,532 INFO L471 AbstractCegarLoop]: Abstraction has 1318 states and 2046 transitions. [2025-03-17 04:36:08,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2025-03-17 04:36:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2046 transitions. [2025-03-17 04:36:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-03-17 04:36:08,535 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:08,536 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:08,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 04:36:08,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-17 04:36:08,737 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:08,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:08,737 INFO L85 PathProgramCache]: Analyzing trace with hash -627706709, now seen corresponding path program 1 times [2025-03-17 04:36:08,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:08,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68630606] [2025-03-17 04:36:08,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:08,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:08,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-17 04:36:09,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-17 04:36:09,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:09,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 114 proven. 60 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:09,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:09,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68630606] [2025-03-17 04:36:09,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68630606] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:36:09,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933212394] [2025-03-17 04:36:09,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:09,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:09,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:36:09,413 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 04:36:09,414 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 04:36:09,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-17 04:36:09,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-17 04:36:09,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:09,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:09,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 04:36:09,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:36:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 618 proven. 6 refuted. 0 times theorem prover too weak. 6220 trivial. 0 not checked. [2025-03-17 04:36:10,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:36:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 168 proven. 6 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:11,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933212394] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:36:11,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:36:11,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 18 [2025-03-17 04:36:11,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450716702] [2025-03-17 04:36:11,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:36:11,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 04:36:11,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:11,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 04:36:11,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2025-03-17 04:36:11,783 INFO L87 Difference]: Start difference. First operand 1318 states and 2046 transitions. Second operand has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 18 states have internal predecessors, (233), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2025-03-17 04:36:15,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:15,487 INFO L93 Difference]: Finished difference Result 3671 states and 5619 transitions. [2025-03-17 04:36:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-03-17 04:36:15,490 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 18 states have internal predecessors, (233), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) Word has length 379 [2025-03-17 04:36:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:15,505 INFO L225 Difference]: With dead ends: 3671 [2025-03-17 04:36:15,505 INFO L226 Difference]: Without dead ends: 2354 [2025-03-17 04:36:15,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=776, Invalid=3384, Unknown=0, NotChecked=0, Total=4160 [2025-03-17 04:36:15,512 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 1765 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 1044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 3651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:15,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 2615 Invalid, 3651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-17 04:36:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2025-03-17 04:36:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1722. [2025-03-17 04:36:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1150 states have (on average 1.3391304347826087) internal successors, (1540), 1156 states have internal predecessors, (1540), 527 states have call successors, (527), 44 states have call predecessors, (527), 44 states have return successors, (527), 521 states have call predecessors, (527), 527 states have call successors, (527) [2025-03-17 04:36:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2594 transitions. [2025-03-17 04:36:15,736 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2594 transitions. Word has length 379 [2025-03-17 04:36:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:15,764 INFO L471 AbstractCegarLoop]: Abstraction has 1722 states and 2594 transitions. [2025-03-17 04:36:15,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 18 states have internal predecessors, (233), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2025-03-17 04:36:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2594 transitions. [2025-03-17 04:36:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2025-03-17 04:36:15,772 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:15,772 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:15,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 04:36:15,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:15,977 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:15,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:15,978 INFO L85 PathProgramCache]: Analyzing trace with hash 44298025, now seen corresponding path program 1 times [2025-03-17 04:36:15,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:15,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382144836] [2025-03-17 04:36:15,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:15,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:16,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 381 statements into 1 equivalence classes. [2025-03-17 04:36:16,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 381 of 381 statements. [2025-03-17 04:36:16,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:16,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-03-17 04:36:17,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:17,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382144836] [2025-03-17 04:36:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382144836] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:36:17,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:36:17,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 04:36:17,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588756074] [2025-03-17 04:36:17,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:36:17,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 04:36:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:17,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 04:36:17,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:36:17,493 INFO L87 Difference]: Start difference. First operand 1722 states and 2594 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:36:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:18,978 INFO L93 Difference]: Finished difference Result 4180 states and 6242 transitions. [2025-03-17 04:36:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 04:36:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 381 [2025-03-17 04:36:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:19,002 INFO L225 Difference]: With dead ends: 4180 [2025-03-17 04:36:19,002 INFO L226 Difference]: Without dead ends: 2724 [2025-03-17 04:36:19,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2025-03-17 04:36:19,010 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 764 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:19,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1563 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 04:36:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2025-03-17 04:36:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 1846. [2025-03-17 04:36:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1274 states have (on average 1.3626373626373627) internal successors, (1736), 1280 states have internal predecessors, (1736), 527 states have call successors, (527), 44 states have call predecessors, (527), 44 states have return successors, (527), 521 states have call predecessors, (527), 527 states have call successors, (527) [2025-03-17 04:36:19,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2790 transitions. [2025-03-17 04:36:19,188 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2790 transitions. Word has length 381 [2025-03-17 04:36:19,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:19,189 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 2790 transitions. [2025-03-17 04:36:19,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:36:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2790 transitions. [2025-03-17 04:36:19,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2025-03-17 04:36:19,191 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:19,192 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:19,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 04:36:19,192 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:19,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash -152215480, now seen corresponding path program 1 times [2025-03-17 04:36:19,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:19,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78750827] [2025-03-17 04:36:19,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:19,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 381 statements into 1 equivalence classes. [2025-03-17 04:36:19,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 381 of 381 statements. [2025-03-17 04:36:19,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:19,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:19,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78750827] [2025-03-17 04:36:19,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78750827] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:36:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492235399] [2025-03-17 04:36:19,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:19,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:19,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:36:19,953 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 04:36:19,970 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 04:36:20,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 381 statements into 1 equivalence classes. [2025-03-17 04:36:20,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 381 of 381 statements. [2025-03-17 04:36:20,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:20,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:20,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 04:36:20,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:36:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3324 proven. 105 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2025-03-17 04:36:20,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:36:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:21,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492235399] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:36:21,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:36:21,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 13 [2025-03-17 04:36:21,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799260179] [2025-03-17 04:36:21,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:36:21,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 04:36:21,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:21,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 04:36:21,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-03-17 04:36:21,223 INFO L87 Difference]: Start difference. First operand 1846 states and 2790 transitions. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2025-03-17 04:36:23,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:23,320 INFO L93 Difference]: Finished difference Result 5776 states and 8580 transitions. [2025-03-17 04:36:23,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-17 04:36:23,321 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 381 [2025-03-17 04:36:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:23,348 INFO L225 Difference]: With dead ends: 5776 [2025-03-17 04:36:23,348 INFO L226 Difference]: Without dead ends: 3930 [2025-03-17 04:36:23,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 759 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=407, Invalid=1663, Unknown=0, NotChecked=0, Total=2070 [2025-03-17 04:36:23,359 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 1485 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:23,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1793 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 04:36:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2025-03-17 04:36:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3147. [2025-03-17 04:36:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3147 states, 2284 states have (on average 1.3542031523642732) internal successors, (3093), 2302 states have internal predecessors, (3093), 791 states have call successors, (791), 71 states have call predecessors, (791), 71 states have return successors, (791), 773 states have call predecessors, (791), 791 states have call successors, (791) [2025-03-17 04:36:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4675 transitions. [2025-03-17 04:36:23,713 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4675 transitions. Word has length 381 [2025-03-17 04:36:23,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:23,714 INFO L471 AbstractCegarLoop]: Abstraction has 3147 states and 4675 transitions. [2025-03-17 04:36:23,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2025-03-17 04:36:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4675 transitions. [2025-03-17 04:36:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2025-03-17 04:36:23,718 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:23,718 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:23,732 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 04:36:23,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:23,923 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:23,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:23,925 INFO L85 PathProgramCache]: Analyzing trace with hash 475979245, now seen corresponding path program 1 times [2025-03-17 04:36:23,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:23,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890735336] [2025-03-17 04:36:23,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:23,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:23,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 382 statements into 1 equivalence classes. [2025-03-17 04:36:24,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 382 of 382 statements. [2025-03-17 04:36:24,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:24,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-03-17 04:36:24,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:24,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890735336] [2025-03-17 04:36:24,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890735336] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:36:24,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:36:24,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:36:24,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561197147] [2025-03-17 04:36:24,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:36:24,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:36:24,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:24,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:36:24,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:36:24,566 INFO L87 Difference]: Start difference. First operand 3147 states and 4675 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:36:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:25,217 INFO L93 Difference]: Finished difference Result 4870 states and 7257 transitions. [2025-03-17 04:36:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:36:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 382 [2025-03-17 04:36:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:25,242 INFO L225 Difference]: With dead ends: 4870 [2025-03-17 04:36:25,242 INFO L226 Difference]: Without dead ends: 3163 [2025-03-17 04:36:25,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:36:25,250 INFO L435 NwaCegarLoop]: 293 mSDtfsCounter, 316 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:25,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1000 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 04:36:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2025-03-17 04:36:25,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3147. [2025-03-17 04:36:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3147 states, 2284 states have (on average 1.3524518388791593) internal successors, (3089), 2302 states have internal predecessors, (3089), 791 states have call successors, (791), 71 states have call predecessors, (791), 71 states have return successors, (791), 773 states have call predecessors, (791), 791 states have call successors, (791) [2025-03-17 04:36:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4671 transitions. [2025-03-17 04:36:25,595 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4671 transitions. Word has length 382 [2025-03-17 04:36:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:25,597 INFO L471 AbstractCegarLoop]: Abstraction has 3147 states and 4671 transitions. [2025-03-17 04:36:25,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-03-17 04:36:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4671 transitions. [2025-03-17 04:36:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2025-03-17 04:36:25,608 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:25,608 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:25,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 04:36:25,609 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:25,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash 586096387, now seen corresponding path program 1 times [2025-03-17 04:36:25,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:25,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157652585] [2025-03-17 04:36:25,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:25,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:25,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:36:25,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:36:25,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:25,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 54 proven. 120 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:26,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:26,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157652585] [2025-03-17 04:36:26,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157652585] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:36:26,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060044781] [2025-03-17 04:36:26,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:26,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:26,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:36:26,203 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 04:36:26,205 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 04:36:26,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:36:26,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:36:26,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:26,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:26,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 04:36:26,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:36:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2974 proven. 120 refuted. 0 times theorem prover too weak. 3750 trivial. 0 not checked. [2025-03-17 04:36:26,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:36:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 54 proven. 120 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:27,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060044781] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:36:27,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:36:27,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2025-03-17 04:36:27,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592565490] [2025-03-17 04:36:27,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:36:27,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 04:36:27,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:27,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 04:36:27,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:36:27,060 INFO L87 Difference]: Start difference. First operand 3147 states and 4671 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2025-03-17 04:36:28,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:28,089 INFO L93 Difference]: Finished difference Result 5569 states and 8179 transitions. [2025-03-17 04:36:28,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 04:36:28,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 383 [2025-03-17 04:36:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:28,108 INFO L225 Difference]: With dead ends: 5569 [2025-03-17 04:36:28,109 INFO L226 Difference]: Without dead ends: 2652 [2025-03-17 04:36:28,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 762 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-03-17 04:36:28,118 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 537 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:28,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 1012 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 04:36:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2025-03-17 04:36:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2381. [2025-03-17 04:36:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 1709 states have (on average 1.3370392042129902) internal successors, (2285), 1723 states have internal predecessors, (2285), 607 states have call successors, (607), 64 states have call predecessors, (607), 64 states have return successors, (607), 593 states have call predecessors, (607), 607 states have call successors, (607) [2025-03-17 04:36:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3499 transitions. [2025-03-17 04:36:28,369 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3499 transitions. Word has length 383 [2025-03-17 04:36:28,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:28,370 INFO L471 AbstractCegarLoop]: Abstraction has 2381 states and 3499 transitions. [2025-03-17 04:36:28,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2025-03-17 04:36:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3499 transitions. [2025-03-17 04:36:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2025-03-17 04:36:28,373 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:28,373 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:28,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 04:36:28,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-17 04:36:28,575 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:28,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash 397709508, now seen corresponding path program 1 times [2025-03-17 04:36:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:28,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312571252] [2025-03-17 04:36:28,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:28,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:28,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:36:28,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:36:28,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:28,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 123 proven. 51 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:29,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:29,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312571252] [2025-03-17 04:36:29,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312571252] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:36:29,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571427051] [2025-03-17 04:36:29,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:29,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:29,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:36:29,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:36:29,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 04:36:29,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:36:29,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:36:29,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:29,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:29,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 04:36:29,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:36:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2928 proven. 51 refuted. 0 times theorem prover too weak. 3865 trivial. 0 not checked. [2025-03-17 04:36:30,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:36:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 123 proven. 51 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:30,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571427051] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:36:30,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:36:30,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 15 [2025-03-17 04:36:30,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022012213] [2025-03-17 04:36:30,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:36:30,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 04:36:30,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:30,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 04:36:30,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-03-17 04:36:30,665 INFO L87 Difference]: Start difference. First operand 2381 states and 3499 transitions. Second operand has 15 states, 14 states have (on average 15.571428571428571) internal successors, (218), 14 states have internal predecessors, (218), 7 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 7 states have call predecessors, (177), 7 states have call successors, (177) [2025-03-17 04:36:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:32,506 INFO L93 Difference]: Finished difference Result 8207 states and 12014 transitions. [2025-03-17 04:36:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-17 04:36:32,507 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 15.571428571428571) internal successors, (218), 14 states have internal predecessors, (218), 7 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 7 states have call predecessors, (177), 7 states have call successors, (177) Word has length 383 [2025-03-17 04:36:32,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:32,532 INFO L225 Difference]: With dead ends: 8207 [2025-03-17 04:36:32,533 INFO L226 Difference]: Without dead ends: 6630 [2025-03-17 04:36:32,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2025-03-17 04:36:32,537 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 609 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:32,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1952 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 04:36:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2025-03-17 04:36:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 5493. [2025-03-17 04:36:32,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 3971 states have (on average 1.3364391840846135) internal successors, (5307), 4008 states have internal predecessors, (5307), 1365 states have call successors, (1365), 156 states have call predecessors, (1365), 156 states have return successors, (1365), 1328 states have call predecessors, (1365), 1365 states have call successors, (1365) [2025-03-17 04:36:32,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 8037 transitions. [2025-03-17 04:36:32,990 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 8037 transitions. Word has length 383 [2025-03-17 04:36:32,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:32,991 INFO L471 AbstractCegarLoop]: Abstraction has 5493 states and 8037 transitions. [2025-03-17 04:36:32,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 15.571428571428571) internal successors, (218), 14 states have internal predecessors, (218), 7 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 7 states have call predecessors, (177), 7 states have call successors, (177) [2025-03-17 04:36:32,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 8037 transitions. [2025-03-17 04:36:32,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2025-03-17 04:36:32,995 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:32,996 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:33,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 04:36:33,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:33,196 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:33,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:33,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1785967419, now seen corresponding path program 1 times [2025-03-17 04:36:33,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:33,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994428461] [2025-03-17 04:36:33,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:33,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:33,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:36:33,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:36:33,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:33,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 147 proven. 195 refuted. 0 times theorem prover too weak. 6502 trivial. 0 not checked. [2025-03-17 04:36:34,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:34,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994428461] [2025-03-17 04:36:34,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994428461] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:36:34,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018192217] [2025-03-17 04:36:34,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:34,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:34,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:36:34,655 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:36:34,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 04:36:34,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:36:34,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:36:34,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:34,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:34,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 04:36:34,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:36:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 4060 proven. 264 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2025-03-17 04:36:36,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:36:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 228 proven. 117 refuted. 0 times theorem prover too weak. 6499 trivial. 0 not checked. [2025-03-17 04:36:36,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018192217] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:36:36,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:36:36,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 9] total 27 [2025-03-17 04:36:36,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128493020] [2025-03-17 04:36:36,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:36:36,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-17 04:36:36,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:36,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-17 04:36:36,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2025-03-17 04:36:36,540 INFO L87 Difference]: Start difference. First operand 5493 states and 8037 transitions. Second operand has 27 states, 25 states have (on average 9.24) internal successors, (231), 24 states have internal predecessors, (231), 10 states have call successors, (143), 5 states have call predecessors, (143), 9 states have return successors, (145), 9 states have call predecessors, (145), 10 states have call successors, (145) [2025-03-17 04:36:43,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:43,530 INFO L93 Difference]: Finished difference Result 18603 states and 26406 transitions. [2025-03-17 04:36:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2025-03-17 04:36:43,532 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 9.24) internal successors, (231), 24 states have internal predecessors, (231), 10 states have call successors, (143), 5 states have call predecessors, (143), 9 states have return successors, (145), 9 states have call predecessors, (145), 10 states have call successors, (145) Word has length 383 [2025-03-17 04:36:43,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:43,602 INFO L225 Difference]: With dead ends: 18603 [2025-03-17 04:36:43,603 INFO L226 Difference]: Without dead ends: 13639 [2025-03-17 04:36:43,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5513 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3365, Invalid=12135, Unknown=0, NotChecked=0, Total=15500 [2025-03-17 04:36:43,623 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 1284 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:43,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 2106 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-17 04:36:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13639 states. [2025-03-17 04:36:44,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13639 to 6068. [2025-03-17 04:36:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6068 states, 4572 states have (on average 1.3348643919510061) internal successors, (6103), 4609 states have internal predecessors, (6103), 1241 states have call successors, (1241), 254 states have call predecessors, (1241), 254 states have return successors, (1241), 1204 states have call predecessors, (1241), 1241 states have call successors, (1241) [2025-03-17 04:36:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6068 states to 6068 states and 8585 transitions. [2025-03-17 04:36:44,456 INFO L78 Accepts]: Start accepts. Automaton has 6068 states and 8585 transitions. Word has length 383 [2025-03-17 04:36:44,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:44,457 INFO L471 AbstractCegarLoop]: Abstraction has 6068 states and 8585 transitions. [2025-03-17 04:36:44,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 9.24) internal successors, (231), 24 states have internal predecessors, (231), 10 states have call successors, (143), 5 states have call predecessors, (143), 9 states have return successors, (145), 9 states have call predecessors, (145), 10 states have call successors, (145) [2025-03-17 04:36:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 6068 states and 8585 transitions. [2025-03-17 04:36:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2025-03-17 04:36:44,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:44,461 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:44,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 04:36:44,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:44,663 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:44,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:44,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1948999045, now seen corresponding path program 1 times [2025-03-17 04:36:44,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:44,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743431909] [2025-03-17 04:36:44,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:44,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:44,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:36:44,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:36:44,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:44,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 120 proven. 54 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:45,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:45,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743431909] [2025-03-17 04:36:45,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743431909] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:36:45,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339500799] [2025-03-17 04:36:45,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:45,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:45,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:36:45,209 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:36:45,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 04:36:45,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:36:45,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:36:45,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:45,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:45,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 04:36:45,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:36:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3018 proven. 54 refuted. 0 times theorem prover too weak. 3772 trivial. 0 not checked. [2025-03-17 04:36:45,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:36:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 120 proven. 54 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:46,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339500799] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:36:46,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:36:46,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 12 [2025-03-17 04:36:46,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497522740] [2025-03-17 04:36:46,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:36:46,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 04:36:46,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:46,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 04:36:46,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-03-17 04:36:46,010 INFO L87 Difference]: Start difference. First operand 6068 states and 8585 transitions. Second operand has 12 states, 12 states have (on average 16.0) internal successors, (192), 12 states have internal predecessors, (192), 4 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (97), 4 states have call predecessors, (97), 4 states have call successors, (97) [2025-03-17 04:36:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:47,517 INFO L93 Difference]: Finished difference Result 12330 states and 17226 transitions. [2025-03-17 04:36:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 04:36:47,518 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.0) internal successors, (192), 12 states have internal predecessors, (192), 4 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (97), 4 states have call predecessors, (97), 4 states have call successors, (97) Word has length 383 [2025-03-17 04:36:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:47,545 INFO L225 Difference]: With dead ends: 12330 [2025-03-17 04:36:47,545 INFO L226 Difference]: Without dead ends: 6924 [2025-03-17 04:36:47,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2025-03-17 04:36:47,558 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 980 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:47,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1002 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 04:36:47,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2025-03-17 04:36:48,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 5322. [2025-03-17 04:36:48,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5322 states, 3977 states have (on average 1.319084737239125) internal successors, (5246), 4008 states have internal predecessors, (5246), 1101 states have call successors, (1101), 243 states have call predecessors, (1101), 243 states have return successors, (1101), 1070 states have call predecessors, (1101), 1101 states have call successors, (1101) [2025-03-17 04:36:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 7448 transitions. [2025-03-17 04:36:48,061 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 7448 transitions. Word has length 383 [2025-03-17 04:36:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:36:48,062 INFO L471 AbstractCegarLoop]: Abstraction has 5322 states and 7448 transitions. [2025-03-17 04:36:48,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.0) internal successors, (192), 12 states have internal predecessors, (192), 4 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (97), 4 states have call predecessors, (97), 4 states have call successors, (97) [2025-03-17 04:36:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 7448 transitions. [2025-03-17 04:36:48,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2025-03-17 04:36:48,065 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:36:48,065 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:48,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 04:36:48,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-17 04:36:48,266 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:36:48,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:36:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2134617338, now seen corresponding path program 1 times [2025-03-17 04:36:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:36:48,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330663418] [2025-03-17 04:36:48,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:48,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:36:48,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:36:48,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:36:48,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:48,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 114 proven. 60 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:48,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:36:48,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330663418] [2025-03-17 04:36:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330663418] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:36:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620896989] [2025-03-17 04:36:48,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:36:48,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:36:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:36:48,983 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:36:48,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 04:36:49,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:36:49,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:36:49,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:36:49,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:36:49,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 04:36:49,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:36:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3174 proven. 60 refuted. 0 times theorem prover too weak. 3610 trivial. 0 not checked. [2025-03-17 04:36:49,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:36:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 114 proven. 60 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-03-17 04:36:50,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620896989] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:36:50,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:36:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2025-03-17 04:36:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386203577] [2025-03-17 04:36:50,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:36:50,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-17 04:36:50,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:36:50,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-17 04:36:50,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2025-03-17 04:36:50,374 INFO L87 Difference]: Start difference. First operand 5322 states and 7448 transitions. Second operand has 22 states, 22 states have (on average 10.818181818181818) internal successors, (238), 22 states have internal predecessors, (238), 5 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 5 states have call predecessors, (177), 5 states have call successors, (177) [2025-03-17 04:36:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:36:59,198 INFO L93 Difference]: Finished difference Result 36739 states and 50452 transitions. [2025-03-17 04:36:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-03-17 04:36:59,199 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.818181818181818) internal successors, (238), 22 states have internal predecessors, (238), 5 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 5 states have call predecessors, (177), 5 states have call successors, (177) Word has length 383 [2025-03-17 04:36:59,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:36:59,349 INFO L225 Difference]: With dead ends: 36739 [2025-03-17 04:36:59,350 INFO L226 Difference]: Without dead ends: 32011 [2025-03-17 04:36:59,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2892 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1604, Invalid=6228, Unknown=0, NotChecked=0, Total=7832 [2025-03-17 04:36:59,378 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 3557 mSDsluCounter, 3914 mSDsCounter, 0 mSdLazyCounter, 4257 mSolverCounterSat, 2871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3615 SdHoareTripleChecker+Valid, 4215 SdHoareTripleChecker+Invalid, 7128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2871 IncrementalHoareTripleChecker+Valid, 4257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-17 04:36:59,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3615 Valid, 4215 Invalid, 7128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2871 Valid, 4257 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-17 04:36:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32011 states. [2025-03-17 04:37:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32011 to 14377. [2025-03-17 04:37:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14377 states, 10647 states have (on average 1.3108856955010801) internal successors, (13957), 10733 states have internal predecessors, (13957), 3051 states have call successors, (3051), 678 states have call predecessors, (3051), 678 states have return successors, (3051), 2965 states have call predecessors, (3051), 3051 states have call successors, (3051) [2025-03-17 04:37:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14377 states to 14377 states and 20059 transitions. [2025-03-17 04:37:01,817 INFO L78 Accepts]: Start accepts. Automaton has 14377 states and 20059 transitions. Word has length 383 [2025-03-17 04:37:01,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:37:01,818 INFO L471 AbstractCegarLoop]: Abstraction has 14377 states and 20059 transitions. [2025-03-17 04:37:01,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.818181818181818) internal successors, (238), 22 states have internal predecessors, (238), 5 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 5 states have call predecessors, (177), 5 states have call successors, (177) [2025-03-17 04:37:01,818 INFO L276 IsEmpty]: Start isEmpty. Operand 14377 states and 20059 transitions. [2025-03-17 04:37:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2025-03-17 04:37:01,821 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:37:01,821 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:37:01,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 04:37:02,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 04:37:02,022 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:37:02,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:37:02,024 INFO L85 PathProgramCache]: Analyzing trace with hash 363398599, now seen corresponding path program 1 times [2025-03-17 04:37:02,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:37:02,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266966247] [2025-03-17 04:37:02,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:37:02,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:37:02,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:37:02,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:37:02,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:37:02,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 04:37:02,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134067248] [2025-03-17 04:37:02,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:37:02,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:37:02,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:37:02,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:37:02,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 04:37:02,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-03-17 04:37:02,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-03-17 04:37:02,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:37:02,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:37:02,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-17 04:37:02,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:37:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2656 proven. 294 refuted. 0 times theorem prover too weak. 3894 trivial. 0 not checked. [2025-03-17 04:37:05,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:37:07,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:37:07,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266966247] [2025-03-17 04:37:07,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 04:37:07,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134067248] [2025-03-17 04:37:07,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134067248] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:37:07,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:37:07,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-03-17 04:37:07,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026938723] [2025-03-17 04:37:07,308 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-17 04:37:07,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 04:37:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:37:07,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 04:37:07,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2025-03-17 04:37:07,311 INFO L87 Difference]: Start difference. First operand 14377 states and 20059 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 10 states have internal predecessors, (103), 3 states have call successors, (59), 3 states have call predecessors, (59), 5 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59)