./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c -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 461bd06f1b3f06d79cc4cf710543bc8daecc2e978ce52b7fb468042420cb9979 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 00:28:52,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 00:28:52,502 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 00:28:52,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 00:28:52,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 00:28:52,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 00:28:52,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 00:28:52,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 00:28:52,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 00:28:52,534 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 00:28:52,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 00:28:52,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 00:28:52,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 00:28:52,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 00:28:52,535 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 00:28:52,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 00:28:52,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 00:28:52,536 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 00:28:52,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 00:28:52,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 00:28:52,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 00:28:52,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 00:28:52,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 00:28:52,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 00:28:52,536 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 00:28:52,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 00:28:52,537 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 00:28:52,537 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 00:28:52,537 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 00:28:52,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 00:28:52,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 00:28:52,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 00:28:52,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:28:52,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 00:28:52,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 00:28:52,538 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 00:28:52,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 00:28:52,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 00:28:52,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 00:28:52,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 00:28:52,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 00:28:52,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 00:28:52,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 00:28:52,538 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 -> 461bd06f1b3f06d79cc4cf710543bc8daecc2e978ce52b7fb468042420cb9979 [2025-03-08 00:28:52,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 00:28:52,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 00:28:52,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 00:28:52,759 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 00:28:52,759 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 00:28:52,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2025-03-08 00:28:53,845 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d5e0b64/49cda49f4374428ebccf0514eea598ad/FLAG8e96cc4c2 [2025-03-08 00:28:54,042 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 00:28:54,042 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2025-03-08 00:28:54,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d5e0b64/49cda49f4374428ebccf0514eea598ad/FLAG8e96cc4c2 [2025-03-08 00:28:54,415 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d5e0b64/49cda49f4374428ebccf0514eea598ad [2025-03-08 00:28:54,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 00:28:54,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 00:28:54,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 00:28:54,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 00:28:54,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 00:28:54,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5799ddcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54, skipping insertion in model container [2025-03-08 00:28:54,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 00:28:54,509 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/array-programs/partial_mod_count_limited_base.c[334,347] [2025-03-08 00:28:54,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:28:54,526 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 00:28:54,532 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/array-programs/partial_mod_count_limited_base.c[334,347] [2025-03-08 00:28:54,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:28:54,544 INFO L204 MainTranslator]: Completed translation [2025-03-08 00:28:54,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54 WrapperNode [2025-03-08 00:28:54,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 00:28:54,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 00:28:54,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 00:28:54,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 00:28:54,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,564 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2025-03-08 00:28:54,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 00:28:54,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 00:28:54,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 00:28:54,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 00:28:54,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,575 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,588 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-08 00:28:54,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,593 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 00:28:54,600 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 00:28:54,600 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 00:28:54,600 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 00:28:54,601 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (1/1) ... [2025-03-08 00:28:54,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:28:54,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:28:54,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 00:28:54,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 00:28:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 00:28:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 00:28:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 00:28:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 00:28:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 00:28:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 00:28:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 00:28:54,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 00:28:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 00:28:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 00:28:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 00:28:54,702 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 00:28:54,704 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 00:28:54,833 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L12: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2025-03-08 00:28:54,844 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-08 00:28:54,844 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 00:28:54,854 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 00:28:54,854 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 00:28:54,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:28:54 BoogieIcfgContainer [2025-03-08 00:28:54,855 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 00:28:54,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 00:28:54,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 00:28:54,861 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 00:28:54,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:28:54" (1/3) ... [2025-03-08 00:28:54,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416c0674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:28:54, skipping insertion in model container [2025-03-08 00:28:54,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:28:54" (2/3) ... [2025-03-08 00:28:54,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416c0674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:28:54, skipping insertion in model container [2025-03-08 00:28:54,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:28:54" (3/3) ... [2025-03-08 00:28:54,864 INFO L128 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2025-03-08 00:28:54,875 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 00:28:54,877 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG partial_mod_count_limited_base.c that has 1 procedures, 19 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-08 00:28:54,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 00:28:54,930 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;@3dc9befc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 00:28:54,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 00:28:54,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:54,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-08 00:28:54,938 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:28:54,938 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:28:54,939 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:28:54,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:28:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1315658020, now seen corresponding path program 1 times [2025-03-08 00:28:54,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:28:54,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906434164] [2025-03-08 00:28:54,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:28:54,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:28:54,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 00:28:55,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 00:28:55,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:28:55,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:28:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:28:55,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:28:55,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906434164] [2025-03-08 00:28:55,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906434164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:28:55,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:28:55,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 00:28:55,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461599768] [2025-03-08 00:28:55,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:28:55,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 00:28:55,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:28:55,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 00:28:55,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 00:28:55,078 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:28:55,087 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2025-03-08 00:28:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 00:28:55,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-08 00:28:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:28:55,092 INFO L225 Difference]: With dead ends: 35 [2025-03-08 00:28:55,092 INFO L226 Difference]: Without dead ends: 16 [2025-03-08 00:28:55,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 00:28:55,097 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:28:55,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:28:55,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-03-08 00:28:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-03-08 00:28:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2025-03-08 00:28:55,121 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2025-03-08 00:28:55,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:28:55,121 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2025-03-08 00:28:55,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2025-03-08 00:28:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-08 00:28:55,122 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:28:55,123 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:28:55,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 00:28:55,123 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:28:55,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:28:55,124 INFO L85 PathProgramCache]: Analyzing trace with hash 427152315, now seen corresponding path program 1 times [2025-03-08 00:28:55,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:28:55,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594296876] [2025-03-08 00:28:55,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:28:55,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:28:55,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 00:28:55,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 00:28:55,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:28:55,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:28:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:28:55,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:28:55,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594296876] [2025-03-08 00:28:55,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594296876] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:28:55,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:28:55,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:28:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922867008] [2025-03-08 00:28:55,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:28:55,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 00:28:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:28:55,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 00:28:55,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:28:55,245 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:28:55,285 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2025-03-08 00:28:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 00:28:55,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-08 00:28:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:28:55,287 INFO L225 Difference]: With dead ends: 40 [2025-03-08 00:28:55,287 INFO L226 Difference]: Without dead ends: 28 [2025-03-08 00:28:55,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:28:55,288 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:28:55,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 20 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:28:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-08 00:28:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2025-03-08 00:28:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-03-08 00:28:55,293 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2025-03-08 00:28:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:28:55,293 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-03-08 00:28:55,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-03-08 00:28:55,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-08 00:28:55,293 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:28:55,293 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:28:55,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 00:28:55,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:28:55,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:28:55,294 INFO L85 PathProgramCache]: Analyzing trace with hash -108668177, now seen corresponding path program 1 times [2025-03-08 00:28:55,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:28:55,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971032611] [2025-03-08 00:28:55,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:28:55,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:28:55,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-08 00:28:55,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 00:28:55,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:28:55,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:28:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 00:28:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:28:55,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971032611] [2025-03-08 00:28:55,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971032611] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:28:55,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:28:55,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 00:28:55,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340127694] [2025-03-08 00:28:55,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:28:55,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 00:28:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:28:55,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 00:28:55,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:28:55,490 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:28:55,533 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2025-03-08 00:28:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 00:28:55,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-03-08 00:28:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:28:55,534 INFO L225 Difference]: With dead ends: 30 [2025-03-08 00:28:55,535 INFO L226 Difference]: Without dead ends: 28 [2025-03-08 00:28:55,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-08 00:28:55,536 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:28:55,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:28:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-08 00:28:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-03-08 00:28:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2025-03-08 00:28:55,540 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 15 [2025-03-08 00:28:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:28:55,540 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2025-03-08 00:28:55,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2025-03-08 00:28:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-08 00:28:55,541 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:28:55,541 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:28:55,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 00:28:55,541 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:28:55,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:28:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash -65866530, now seen corresponding path program 1 times [2025-03-08 00:28:55,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:28:55,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722052261] [2025-03-08 00:28:55,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:28:55,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:28:55,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 00:28:55,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 00:28:55,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:28:55,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:28:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:28:55,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:28:55,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722052261] [2025-03-08 00:28:55,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722052261] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:28:55,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110075426] [2025-03-08 00:28:55,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:28:55,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:28:55,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:28:55,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:28:55,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 00:28:55,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 00:28:55,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 00:28:55,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:28:55,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:28:55,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 00:28:55,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:28:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:28:55,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:28:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:28:55,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110075426] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:28:55,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:28:55,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-08 00:28:55,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220474088] [2025-03-08 00:28:55,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:28:55,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 00:28:55,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:28:55,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 00:28:55,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-03-08 00:28:55,848 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:28:55,942 INFO L93 Difference]: Finished difference Result 107 states and 133 transitions. [2025-03-08 00:28:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 00:28:55,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-03-08 00:28:55,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:28:55,943 INFO L225 Difference]: With dead ends: 107 [2025-03-08 00:28:55,943 INFO L226 Difference]: Without dead ends: 85 [2025-03-08 00:28:55,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-03-08 00:28:55,944 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 105 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:28:55,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 39 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:28:55,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-03-08 00:28:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 42. [2025-03-08 00:28:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2025-03-08 00:28:55,953 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 20 [2025-03-08 00:28:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:28:55,953 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2025-03-08 00:28:55,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2025-03-08 00:28:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-08 00:28:55,955 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:28:55,955 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:28:55,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 00:28:56,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:28:56,156 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:28:56,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:28:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash 142072306, now seen corresponding path program 1 times [2025-03-08 00:28:56,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:28:56,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179040351] [2025-03-08 00:28:56,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:28:56,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:28:56,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-08 00:28:56,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-08 00:28:56,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:28:56,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:28:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:28:56,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:28:56,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179040351] [2025-03-08 00:28:56,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179040351] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:28:56,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681879153] [2025-03-08 00:28:56,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:28:56,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:28:56,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:28:56,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:28:56,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 00:28:56,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-08 00:28:56,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-08 00:28:56,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:28:56,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:28:56,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 00:28:56,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:28:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:28:56,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:28:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:28:56,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681879153] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:28:56,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:28:56,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-03-08 00:28:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611520410] [2025-03-08 00:28:56,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:28:56,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 00:28:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:28:56,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 00:28:56,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2025-03-08 00:28:56,625 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:56,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:28:56,807 INFO L93 Difference]: Finished difference Result 243 states and 302 transitions. [2025-03-08 00:28:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 00:28:56,807 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-03-08 00:28:56,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:28:56,808 INFO L225 Difference]: With dead ends: 243 [2025-03-08 00:28:56,809 INFO L226 Difference]: Without dead ends: 217 [2025-03-08 00:28:56,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2025-03-08 00:28:56,810 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 268 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:28:56,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 104 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:28:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-03-08 00:28:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 72. [2025-03-08 00:28:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 71 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2025-03-08 00:28:56,825 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 35 [2025-03-08 00:28:56,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:28:56,825 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2025-03-08 00:28:56,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2025-03-08 00:28:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 00:28:56,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:28:56,826 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:28:56,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 00:28:57,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:28:57,027 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:28:57,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:28:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1833013265, now seen corresponding path program 2 times [2025-03-08 00:28:57,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:28:57,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492276196] [2025-03-08 00:28:57,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:28:57,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:28:57,048 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-03-08 00:28:57,075 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 00:28:57,075 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:28:57,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:28:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 129 proven. 60 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-08 00:28:57,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:28:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492276196] [2025-03-08 00:28:57,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492276196] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:28:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852572897] [2025-03-08 00:28:57,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:28:57,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:28:57,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:28:57,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:28:57,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 00:28:57,449 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-03-08 00:28:57,477 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 00:28:57,477 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:28:57,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:28:57,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 00:28:57,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:28:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:28:57,757 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:28:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:28:58,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852572897] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:28:58,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:28:58,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2025-03-08 00:28:58,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201311672] [2025-03-08 00:28:58,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:28:58,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 00:28:58,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:28:58,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 00:28:58,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=618, Unknown=0, NotChecked=0, Total=992 [2025-03-08 00:28:58,010 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 32 states, 32 states have (on average 4.71875) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:58,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:28:58,459 INFO L93 Difference]: Finished difference Result 522 states and 650 transitions. [2025-03-08 00:28:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 00:28:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.71875) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-03-08 00:28:58,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:28:58,461 INFO L225 Difference]: With dead ends: 522 [2025-03-08 00:28:58,461 INFO L226 Difference]: Without dead ends: 481 [2025-03-08 00:28:58,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=671, Invalid=1135, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 00:28:58,463 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 731 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 00:28:58,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 203 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 00:28:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2025-03-08 00:28:58,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 132. [2025-03-08 00:28:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.2900763358778626) internal successors, (169), 131 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2025-03-08 00:28:58,478 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 65 [2025-03-08 00:28:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:28:58,478 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2025-03-08 00:28:58,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.71875) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:28:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2025-03-08 00:28:58,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-08 00:28:58,480 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:28:58,481 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:28:58,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 00:28:58,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:28:58,683 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:28:58,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:28:58,684 INFO L85 PathProgramCache]: Analyzing trace with hash -449357071, now seen corresponding path program 3 times [2025-03-08 00:28:58,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:28:58,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378507321] [2025-03-08 00:28:58,684 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:28:58,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:28:58,710 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 125 statements into 23 equivalence classes. [2025-03-08 00:28:59,022 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 90 of 125 statements. [2025-03-08 00:28:59,022 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-03-08 00:28:59,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:28:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 932 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2025-03-08 00:28:59,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:28:59,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378507321] [2025-03-08 00:28:59,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378507321] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:28:59,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009182256] [2025-03-08 00:28:59,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:28:59,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:28:59,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:28:59,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:28:59,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 00:28:59,719 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 125 statements into 23 equivalence classes. [2025-03-08 00:29:03,417 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 90 of 125 statements. [2025-03-08 00:29:03,417 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-03-08 00:29:03,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:29:03,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 00:29:03,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:29:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 613 proven. 319 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2025-03-08 00:29:04,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:29:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 932 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2025-03-08 00:29:04,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009182256] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:29:04,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:29:04,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 46 [2025-03-08 00:29:04,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555606865] [2025-03-08 00:29:04,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:29:04,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-03-08 00:29:04,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:29:04,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-03-08 00:29:04,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=721, Invalid=1441, Unknown=0, NotChecked=0, Total=2162 [2025-03-08 00:29:04,787 INFO L87 Difference]: Start difference. First operand 132 states and 169 transitions. Second operand has 47 states, 47 states have (on average 4.531914893617022) internal successors, (213), 46 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:29:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:29:09,036 INFO L93 Difference]: Finished difference Result 3190 states and 4214 transitions. [2025-03-08 00:29:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2025-03-08 00:29:09,037 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.531914893617022) internal successors, (213), 46 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2025-03-08 00:29:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:29:09,050 INFO L225 Difference]: With dead ends: 3190 [2025-03-08 00:29:09,051 INFO L226 Difference]: Without dead ends: 3173 [2025-03-08 00:29:09,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16657 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=12328, Invalid=27472, Unknown=0, NotChecked=0, Total=39800 [2025-03-08 00:29:09,063 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 1829 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 00:29:09,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 577 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 00:29:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2025-03-08 00:29:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 457. [2025-03-08 00:29:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.3399122807017543) internal successors, (611), 456 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:29:09,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 611 transitions. [2025-03-08 00:29:09,125 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 611 transitions. Word has length 125 [2025-03-08 00:29:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:29:09,126 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 611 transitions. [2025-03-08 00:29:09,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.531914893617022) internal successors, (213), 46 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:29:09,126 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 611 transitions. [2025-03-08 00:29:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-08 00:29:09,129 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:29:09,129 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:29:09,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 00:29:09,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:29:09,333 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:29:09,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:29:09,333 INFO L85 PathProgramCache]: Analyzing trace with hash -881955759, now seen corresponding path program 1 times [2025-03-08 00:29:09,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:29:09,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156449013] [2025-03-08 00:29:09,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:29:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:29:09,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 00:29:09,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 00:29:09,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:29:09,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:29:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 7 proven. 1065 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-03-08 00:29:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:29:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156449013] [2025-03-08 00:29:10,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156449013] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:29:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380331677] [2025-03-08 00:29:10,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:29:10,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:29:10,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:29:10,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:29:10,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 00:29:10,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 00:29:10,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 00:29:10,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:29:10,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:29:10,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-08 00:29:10,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:29:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:29:10,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:29:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:29:11,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380331677] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:29:11,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:29:11,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 25] total 68 [2025-03-08 00:29:11,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893413834] [2025-03-08 00:29:11,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:29:11,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2025-03-08 00:29:11,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:29:11,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2025-03-08 00:29:11,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1879, Invalid=2813, Unknown=0, NotChecked=0, Total=4692 [2025-03-08 00:29:11,424 INFO L87 Difference]: Start difference. First operand 457 states and 611 transitions. Second operand has 69 states, 69 states have (on average 4.63768115942029) internal successors, (320), 68 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:29:15,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:29:15,585 INFO L93 Difference]: Finished difference Result 6682 states and 9010 transitions. [2025-03-08 00:29:15,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2025-03-08 00:29:15,585 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.63768115942029) internal successors, (320), 68 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2025-03-08 00:29:15,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:29:15,600 INFO L225 Difference]: With dead ends: 6682 [2025-03-08 00:29:15,600 INFO L226 Difference]: Without dead ends: 6340 [2025-03-08 00:29:15,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13169 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=10928, Invalid=22744, Unknown=0, NotChecked=0, Total=33672 [2025-03-08 00:29:15,606 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 2005 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 00:29:15,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 402 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 00:29:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2025-03-08 00:29:15,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 2166. [2025-03-08 00:29:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 2165 states have (on average 1.3782909930715936) internal successors, (2984), 2165 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:29:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 2984 transitions. [2025-03-08 00:29:15,789 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 2984 transitions. Word has length 125 [2025-03-08 00:29:15,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:29:15,790 INFO L471 AbstractCegarLoop]: Abstraction has 2166 states and 2984 transitions. [2025-03-08 00:29:15,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.63768115942029) internal successors, (320), 68 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:29:15,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 2984 transitions. [2025-03-08 00:29:15,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2025-03-08 00:29:15,794 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:29:15,794 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 24, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:29:15,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 00:29:15,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:29:15,998 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:29:15,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:29:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1838506195, now seen corresponding path program 1 times [2025-03-08 00:29:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:29:15,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815732267] [2025-03-08 00:29:15,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:29:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:29:16,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 245 statements into 1 equivalence classes. [2025-03-08 00:29:16,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 245 of 245 statements. [2025-03-08 00:29:16,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:29:16,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:29:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 2667 proven. 1311 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2025-03-08 00:29:17,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:29:17,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815732267] [2025-03-08 00:29:17,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815732267] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:29:17,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184945343] [2025-03-08 00:29:17,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:29:17,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:29:17,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:29:17,683 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:29:17,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 00:29:17,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 245 statements into 1 equivalence classes. [2025-03-08 00:29:17,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 245 of 245 statements. [2025-03-08 00:29:17,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:29:17,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:29:17,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-08 00:29:17,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:29:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:29:19,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:29:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:29:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184945343] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:29:21,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:29:21,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 49, 49] total 121 [2025-03-08 00:29:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203298905] [2025-03-08 00:29:21,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:29:21,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2025-03-08 00:29:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:29:21,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2025-03-08 00:29:21,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5378, Invalid=9384, Unknown=0, NotChecked=0, Total=14762 [2025-03-08 00:29:21,183 INFO L87 Difference]: Start difference. First operand 2166 states and 2984 transitions. Second operand has 122 states, 122 states have (on average 4.942622950819672) internal successors, (603), 121 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:29:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:29:31,950 INFO L93 Difference]: Finished difference Result 58696 states and 79753 transitions. [2025-03-08 00:29:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2025-03-08 00:29:31,950 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 4.942622950819672) internal successors, (603), 121 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2025-03-08 00:29:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:29:32,051 INFO L225 Difference]: With dead ends: 58696 [2025-03-08 00:29:32,052 INFO L226 Difference]: Without dead ends: 56656 [2025-03-08 00:29:32,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8857 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=10031, Invalid=18361, Unknown=0, NotChecked=0, Total=28392 [2025-03-08 00:29:32,065 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5539 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5539 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 00:29:32,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5539 Valid, 898 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 00:29:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56656 states. [2025-03-08 00:29:33,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56656 to 5885. [2025-03-08 00:29:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5885 states, 5884 states have (on average 1.290958531611149) internal successors, (7596), 5884 states have internal predecessors, (7596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:29:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5885 states to 5885 states and 7596 transitions. [2025-03-08 00:29:33,360 INFO L78 Accepts]: Start accepts. Automaton has 5885 states and 7596 transitions. Word has length 245 [2025-03-08 00:29:33,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:29:33,361 INFO L471 AbstractCegarLoop]: Abstraction has 5885 states and 7596 transitions. [2025-03-08 00:29:33,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 4.942622950819672) internal successors, (603), 121 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:29:33,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5885 states and 7596 transitions. [2025-03-08 00:29:33,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2025-03-08 00:29:33,371 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:29:33,372 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:29:33,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 00:29:33,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:29:33,610 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:29:33,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:29:33,610 INFO L85 PathProgramCache]: Analyzing trace with hash 920679473, now seen corresponding path program 4 times [2025-03-08 00:29:33,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:29:33,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001096453] [2025-03-08 00:29:33,610 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:29:33,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:29:33,661 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 485 statements into 2 equivalence classes. [2025-03-08 00:29:33,819 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 485 of 485 statements. [2025-03-08 00:29:33,820 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 00:29:33,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:29:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:29:43,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:29:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001096453] [2025-03-08 00:29:43,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001096453] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:29:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470002211] [2025-03-08 00:29:43,480 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:29:43,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:29:43,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:29:43,482 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) [2025-03-08 00:29:43,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 00:29:43,602 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 485 statements into 2 equivalence classes.