./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label26.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label26.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 f7d9d441800fd040181450c0920264f1b228689c17b8db097e43b17ec5ad46cc --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 15:01:20,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:01:20,870 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 15:01:20,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:01:20,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:01:20,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:01:20,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:01:20,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:01:20,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:01:20,895 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:01:20,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:01:20,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:01:20,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:01:20,896 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:01:20,896 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:01:20,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:01:20,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:01:20,896 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:01:20,897 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 15:01:20,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:01:20,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:01:20,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:01:20,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:01:20,897 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:01:20,897 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:01:20,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:01:20,897 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:01:20,897 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:01:20,897 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:01:20,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:01:20,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:01:20,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:01:20,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:01:20,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:01:20,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:01:20,898 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:01:20,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:01:20,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 15:01:20,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 15:01:20,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:01:20,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:01:20,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:01:20,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:01:20,899 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 -> f7d9d441800fd040181450c0920264f1b228689c17b8db097e43b17ec5ad46cc [2025-03-16 15:01:21,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:01:21,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:01:21,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:01:21,107 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:01:21,107 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:01:21,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label26.c [2025-03-16 15:01:22,222 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5c4c2a2/1e3c27b03dc34813a1bdd8e8380a5122/FLAG0c232e0b6 [2025-03-16 15:01:22,740 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:01:22,741 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label26.c [2025-03-16 15:01:22,774 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5c4c2a2/1e3c27b03dc34813a1bdd8e8380a5122/FLAG0c232e0b6 [2025-03-16 15:01:22,785 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5c4c2a2/1e3c27b03dc34813a1bdd8e8380a5122 [2025-03-16 15:01:22,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:01:22,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:01:22,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:01:22,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:01:22,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:01:22,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:01:22" (1/1) ... [2025-03-16 15:01:22,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237cd493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:22, skipping insertion in model container [2025-03-16 15:01:22,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:01:22" (1/1) ... [2025-03-16 15:01:22,880 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:01:23,046 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/eca-rers2012/Problem13_label26.c[5554,5567] [2025-03-16 15:01:23,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:01:23,549 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:01:23,567 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/eca-rers2012/Problem13_label26.c[5554,5567] [2025-03-16 15:01:23,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:01:23,859 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:01:23,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23 WrapperNode [2025-03-16 15:01:23,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:01:23,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:01:23,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:01:23,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:01:23,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:23,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,377 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2025-03-16 15:01:24,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:01:24,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:01:24,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:01:24,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:01:24,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,453 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,660 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 15:01:24,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,777 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:01:24,872 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:01:24,872 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:01:24,872 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:01:24,873 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (1/1) ... [2025-03-16 15:01:24,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:01:24,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:01:24,901 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) [2025-03-16 15:01:24,903 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 [2025-03-16 15:01:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:01:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 15:01:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:01:24,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:01:24,969 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:01:24,971 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:01:29,025 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2025-03-16 15:01:29,025 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2025-03-16 15:01:29,025 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2025-03-16 15:01:29,226 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2025-03-16 15:01:29,226 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:01:29,259 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:01:29,262 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:01:29,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:01:29 BoogieIcfgContainer [2025-03-16 15:01:29,263 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:01:29,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:01:29,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:01:29,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:01:29,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:01:22" (1/3) ... [2025-03-16 15:01:29,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445be71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:01:29, skipping insertion in model container [2025-03-16 15:01:29,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:01:23" (2/3) ... [2025-03-16 15:01:29,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445be71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:01:29, skipping insertion in model container [2025-03-16 15:01:29,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:01:29" (3/3) ... [2025-03-16 15:01:29,272 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label26.c [2025-03-16 15:01:29,284 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:01:29,285 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label26.c that has 1 procedures, 1037 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 15:01:29,367 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:01:29,375 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;@59a18a31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:01:29,375 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:01:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 1037 states, 1035 states have (on average 1.8753623188405797) internal successors, (1941), 1036 states have internal predecessors, (1941), 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) [2025-03-16 15:01:29,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-16 15:01:29,386 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:29,386 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:29,387 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:29,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1603457902, now seen corresponding path program 1 times [2025-03-16 15:01:29,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:29,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335174988] [2025-03-16 15:01:29,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:29,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:29,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-16 15:01:29,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-16 15:01:29,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:29,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:01:29,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:29,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335174988] [2025-03-16 15:01:29,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335174988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:29,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:29,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:01:29,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904761616] [2025-03-16 15:01:29,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:29,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 15:01:29,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:29,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 15:01:29,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:01:29,517 INFO L87 Difference]: Start difference. First operand has 1037 states, 1035 states have (on average 1.8753623188405797) internal successors, (1941), 1036 states have internal predecessors, (1941), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2025-03-16 15:01:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:29,606 INFO L93 Difference]: Finished difference Result 2073 states and 3881 transitions. [2025-03-16 15:01:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 15:01:29,608 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2025-03-16 15:01:29,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:29,625 INFO L225 Difference]: With dead ends: 2073 [2025-03-16 15:01:29,625 INFO L226 Difference]: Without dead ends: 1034 [2025-03-16 15:01:29,634 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 [2025-03-16 15:01:29,637 INFO L435 NwaCegarLoop]: 1879 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, 1879 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 [2025-03-16 15:01:29,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:01:29,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2025-03-16 15:01:29,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2025-03-16 15:01:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 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) [2025-03-16 15:01:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2025-03-16 15:01:29,714 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 37 [2025-03-16 15:01:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:29,717 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2025-03-16 15:01:29,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2025-03-16 15:01:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2025-03-16 15:01:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-16 15:01:29,718 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:29,718 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:29,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 15:01:29,718 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:29,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1174204050, now seen corresponding path program 1 times [2025-03-16 15:01:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:29,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537934187] [2025-03-16 15:01:29,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:29,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-16 15:01:29,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-16 15:01:29,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:29,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:01:29,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:29,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537934187] [2025-03-16 15:01:29,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537934187] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:29,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:29,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:01:29,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358220964] [2025-03-16 15:01:29,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:29,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:29,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:29,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:29,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:29,906 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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) [2025-03-16 15:01:33,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:33,321 INFO L93 Difference]: Finished difference Result 2931 states and 5350 transitions. [2025-03-16 15:01:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:33,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2025-03-16 15:01:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:33,332 INFO L225 Difference]: With dead ends: 2931 [2025-03-16 15:01:33,332 INFO L226 Difference]: Without dead ends: 1898 [2025-03-16 15:01:33,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:33,334 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 977 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 3434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:33,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 600 Invalid, 3434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2874 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-16 15:01:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2025-03-16 15:01:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1893. [2025-03-16 15:01:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 1.73784355179704) internal successors, (3288), 1892 states have internal predecessors, (3288), 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) [2025-03-16 15:01:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3288 transitions. [2025-03-16 15:01:33,382 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3288 transitions. Word has length 37 [2025-03-16 15:01:33,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:33,383 INFO L471 AbstractCegarLoop]: Abstraction has 1893 states and 3288 transitions. [2025-03-16 15:01:33,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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) [2025-03-16 15:01:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3288 transitions. [2025-03-16 15:01:33,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-03-16 15:01:33,386 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:33,386 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:33,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 15:01:33,387 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:33,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash -686244251, now seen corresponding path program 1 times [2025-03-16 15:01:33,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:33,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444509669] [2025-03-16 15:01:33,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:33,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-16 15:01:33,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-16 15:01:33,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:33,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:01:33,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:33,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444509669] [2025-03-16 15:01:33,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444509669] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:33,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:33,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:01:33,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483952022] [2025-03-16 15:01:33,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:33,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:33,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:33,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:33,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:33,703 INFO L87 Difference]: Start difference. First operand 1893 states and 3288 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2025-03-16 15:01:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:36,575 INFO L93 Difference]: Finished difference Result 5436 states and 9565 transitions. [2025-03-16 15:01:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 102 [2025-03-16 15:01:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:36,588 INFO L225 Difference]: With dead ends: 5436 [2025-03-16 15:01:36,588 INFO L226 Difference]: Without dead ends: 3544 [2025-03-16 15:01:36,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:36,592 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 815 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 3127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:36,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 880 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 3127 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-16 15:01:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2025-03-16 15:01:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3483. [2025-03-16 15:01:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3483 states, 3482 states have (on average 1.586731763354394) internal successors, (5525), 3482 states have internal predecessors, (5525), 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) [2025-03-16 15:01:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3483 states to 3483 states and 5525 transitions. [2025-03-16 15:01:36,648 INFO L78 Accepts]: Start accepts. Automaton has 3483 states and 5525 transitions. Word has length 102 [2025-03-16 15:01:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:36,648 INFO L471 AbstractCegarLoop]: Abstraction has 3483 states and 5525 transitions. [2025-03-16 15:01:36,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2025-03-16 15:01:36,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3483 states and 5525 transitions. [2025-03-16 15:01:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-16 15:01:36,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:36,650 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:36,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 15:01:36,650 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:36,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:36,651 INFO L85 PathProgramCache]: Analyzing trace with hash -763463785, now seen corresponding path program 1 times [2025-03-16 15:01:36,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:36,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294675283] [2025-03-16 15:01:36,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:36,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:36,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-16 15:01:36,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-16 15:01:36,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:36,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:01:36,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:36,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294675283] [2025-03-16 15:01:36,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294675283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:36,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:36,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:01:36,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427037788] [2025-03-16 15:01:36,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:36,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:36,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:36,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:36,784 INFO L87 Difference]: Start difference. First operand 3483 states and 5525 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2025-03-16 15:01:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:39,399 INFO L93 Difference]: Finished difference Result 10137 states and 16133 transitions. [2025-03-16 15:01:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:39,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 103 [2025-03-16 15:01:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:39,418 INFO L225 Difference]: With dead ends: 10137 [2025-03-16 15:01:39,418 INFO L226 Difference]: Without dead ends: 6655 [2025-03-16 15:01:39,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:39,425 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 871 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 3256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:39,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1135 Invalid, 3256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 15:01:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6655 states. [2025-03-16 15:01:39,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6655 to 6654. [2025-03-16 15:01:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6654 states, 6653 states have (on average 1.4172553735157072) internal successors, (9429), 6653 states have internal predecessors, (9429), 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) [2025-03-16 15:01:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6654 states to 6654 states and 9429 transitions. [2025-03-16 15:01:39,524 INFO L78 Accepts]: Start accepts. Automaton has 6654 states and 9429 transitions. Word has length 103 [2025-03-16 15:01:39,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:39,525 INFO L471 AbstractCegarLoop]: Abstraction has 6654 states and 9429 transitions. [2025-03-16 15:01:39,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2025-03-16 15:01:39,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6654 states and 9429 transitions. [2025-03-16 15:01:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-16 15:01:39,530 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:39,530 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:39,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 15:01:39,531 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:39,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:39,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1209463333, now seen corresponding path program 1 times [2025-03-16 15:01:39,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:39,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569078925] [2025-03-16 15:01:39,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:39,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:39,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 15:01:39,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 15:01:39,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:39,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:01:39,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:39,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569078925] [2025-03-16 15:01:39,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569078925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:39,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:39,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:01:39,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986576659] [2025-03-16 15:01:39,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:39,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:39,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:39,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:39,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:39,642 INFO L87 Difference]: Start difference. First operand 6654 states and 9429 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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) [2025-03-16 15:01:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:42,610 INFO L93 Difference]: Finished difference Result 14119 states and 20672 transitions. [2025-03-16 15:01:42,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:42,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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 106 [2025-03-16 15:01:42,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:42,626 INFO L225 Difference]: With dead ends: 14119 [2025-03-16 15:01:42,627 INFO L226 Difference]: Without dead ends: 7466 [2025-03-16 15:01:42,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:42,634 INFO L435 NwaCegarLoop]: 1042 mSDtfsCounter, 872 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 3381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:42,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1175 Invalid, 3381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-16 15:01:42,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7466 states. [2025-03-16 15:01:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7466 to 7455. [2025-03-16 15:01:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 7454 states have (on average 1.3390126106788303) internal successors, (9981), 7454 states have internal predecessors, (9981), 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) [2025-03-16 15:01:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 9981 transitions. [2025-03-16 15:01:42,719 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 9981 transitions. Word has length 106 [2025-03-16 15:01:42,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:42,719 INFO L471 AbstractCegarLoop]: Abstraction has 7455 states and 9981 transitions. [2025-03-16 15:01:42,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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) [2025-03-16 15:01:42,720 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 9981 transitions. [2025-03-16 15:01:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-16 15:01:42,721 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:42,721 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:42,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 15:01:42,721 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:42,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:42,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1189718154, now seen corresponding path program 1 times [2025-03-16 15:01:42,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:42,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451787579] [2025-03-16 15:01:42,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:42,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:42,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-16 15:01:42,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-16 15:01:42,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:42,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:01:42,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451787579] [2025-03-16 15:01:42,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451787579] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:42,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:42,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:01:42,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938112892] [2025-03-16 15:01:42,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:42,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:42,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:42,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:42,996 INFO L87 Difference]: Start difference. First operand 7455 states and 9981 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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) [2025-03-16 15:01:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:45,015 INFO L93 Difference]: Finished difference Result 14122 states and 19149 transitions. [2025-03-16 15:01:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:45,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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 148 [2025-03-16 15:01:45,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:45,031 INFO L225 Difference]: With dead ends: 14122 [2025-03-16 15:01:45,031 INFO L226 Difference]: Without dead ends: 7455 [2025-03-16 15:01:45,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:45,038 INFO L435 NwaCegarLoop]: 1085 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:45,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1214 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 15:01:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2025-03-16 15:01:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7455. [2025-03-16 15:01:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 7454 states have (on average 1.3363294875234772) internal successors, (9961), 7454 states have internal predecessors, (9961), 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) [2025-03-16 15:01:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 9961 transitions. [2025-03-16 15:01:45,164 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 9961 transitions. Word has length 148 [2025-03-16 15:01:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:45,166 INFO L471 AbstractCegarLoop]: Abstraction has 7455 states and 9961 transitions. [2025-03-16 15:01:45,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 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) [2025-03-16 15:01:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 9961 transitions. [2025-03-16 15:01:45,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-16 15:01:45,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:45,167 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:45,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 15:01:45,167 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:45,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:45,167 INFO L85 PathProgramCache]: Analyzing trace with hash -530784032, now seen corresponding path program 1 times [2025-03-16 15:01:45,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:45,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195236713] [2025-03-16 15:01:45,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:45,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:45,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-16 15:01:45,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-16 15:01:45,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:45,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-16 15:01:45,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:45,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195236713] [2025-03-16 15:01:45,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195236713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:45,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:45,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:01:45,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105284811] [2025-03-16 15:01:45,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:45,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:45,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:45,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:45,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:45,279 INFO L87 Difference]: Start difference. First operand 7455 states and 9961 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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) [2025-03-16 15:01:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:47,813 INFO L93 Difference]: Finished difference Result 19655 states and 26990 transitions. [2025-03-16 15:01:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:47,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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 162 [2025-03-16 15:01:47,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:47,834 INFO L225 Difference]: With dead ends: 19655 [2025-03-16 15:01:47,834 INFO L226 Difference]: Without dead ends: 12988 [2025-03-16 15:01:47,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:47,842 INFO L435 NwaCegarLoop]: 1051 mSDtfsCounter, 743 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:47,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1202 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-16 15:01:47,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2025-03-16 15:01:47,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 12971. [2025-03-16 15:01:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12970 states have (on average 1.235929067077872) internal successors, (16030), 12970 states have internal predecessors, (16030), 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) [2025-03-16 15:01:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16030 transitions. [2025-03-16 15:01:47,953 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16030 transitions. Word has length 162 [2025-03-16 15:01:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:47,954 INFO L471 AbstractCegarLoop]: Abstraction has 12971 states and 16030 transitions. [2025-03-16 15:01:47,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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) [2025-03-16 15:01:47,954 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16030 transitions. [2025-03-16 15:01:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2025-03-16 15:01:47,956 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:47,956 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:47,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 15:01:47,956 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:47,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash 815777967, now seen corresponding path program 1 times [2025-03-16 15:01:47,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:47,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460006610] [2025-03-16 15:01:47,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:47,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:47,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-16 15:01:47,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-16 15:01:47,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:47,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:01:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460006610] [2025-03-16 15:01:48,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460006610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:48,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:48,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:01:48,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402557754] [2025-03-16 15:01:48,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:48,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:48,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:48,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:48,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:48,246 INFO L87 Difference]: Start difference. First operand 12971 states and 16030 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2025-03-16 15:01:50,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:50,789 INFO L93 Difference]: Finished difference Result 31479 states and 39985 transitions. [2025-03-16 15:01:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:50,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 249 [2025-03-16 15:01:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:50,818 INFO L225 Difference]: With dead ends: 31479 [2025-03-16 15:01:50,818 INFO L226 Difference]: Without dead ends: 19296 [2025-03-16 15:01:50,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:50,832 INFO L435 NwaCegarLoop]: 1776 mSDtfsCounter, 775 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:50,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1917 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-16 15:01:50,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19296 states. [2025-03-16 15:01:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19296 to 19272. [2025-03-16 15:01:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19272 states, 19271 states have (on average 1.1922059052462248) internal successors, (22975), 19271 states have internal predecessors, (22975), 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) [2025-03-16 15:01:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19272 states to 19272 states and 22975 transitions. [2025-03-16 15:01:51,108 INFO L78 Accepts]: Start accepts. Automaton has 19272 states and 22975 transitions. Word has length 249 [2025-03-16 15:01:51,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:51,108 INFO L471 AbstractCegarLoop]: Abstraction has 19272 states and 22975 transitions. [2025-03-16 15:01:51,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2025-03-16 15:01:51,109 INFO L276 IsEmpty]: Start isEmpty. Operand 19272 states and 22975 transitions. [2025-03-16 15:01:51,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2025-03-16 15:01:51,113 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:51,113 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:51,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 15:01:51,113 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:51,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:51,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2040455627, now seen corresponding path program 1 times [2025-03-16 15:01:51,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:51,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977157283] [2025-03-16 15:01:51,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:51,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:51,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 251 statements into 1 equivalence classes. [2025-03-16 15:01:51,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 251 of 251 statements. [2025-03-16 15:01:51,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:51,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:01:51,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:51,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977157283] [2025-03-16 15:01:51,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977157283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:51,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:51,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:01:51,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417909619] [2025-03-16 15:01:51,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:51,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:51,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:51,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:51,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:51,256 INFO L87 Difference]: Start difference. First operand 19272 states and 22975 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2025-03-16 15:01:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:53,924 INFO L93 Difference]: Finished difference Result 53486 states and 64326 transitions. [2025-03-16 15:01:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:53,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 251 [2025-03-16 15:01:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:53,967 INFO L225 Difference]: With dead ends: 53486 [2025-03-16 15:01:53,967 INFO L226 Difference]: Without dead ends: 33424 [2025-03-16 15:01:53,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:53,990 INFO L435 NwaCegarLoop]: 1671 mSDtfsCounter, 953 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 3225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:53,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 1808 Invalid, 3225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 15:01:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33424 states. [2025-03-16 15:01:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33424 to 31843. [2025-03-16 15:01:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31843 states, 31842 states have (on average 1.1619559072922556) internal successors, (36999), 31842 states have internal predecessors, (36999), 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) [2025-03-16 15:01:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31843 states to 31843 states and 36999 transitions. [2025-03-16 15:01:54,274 INFO L78 Accepts]: Start accepts. Automaton has 31843 states and 36999 transitions. Word has length 251 [2025-03-16 15:01:54,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:54,276 INFO L471 AbstractCegarLoop]: Abstraction has 31843 states and 36999 transitions. [2025-03-16 15:01:54,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2025-03-16 15:01:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 31843 states and 36999 transitions. [2025-03-16 15:01:54,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2025-03-16 15:01:54,278 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:54,278 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:54,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 15:01:54,279 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:54,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:54,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1251861716, now seen corresponding path program 1 times [2025-03-16 15:01:54,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:54,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961908540] [2025-03-16 15:01:54,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:54,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:54,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 278 statements into 1 equivalence classes. [2025-03-16 15:01:54,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 278 of 278 statements. [2025-03-16 15:01:54,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:54,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 74 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:01:55,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:55,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961908540] [2025-03-16 15:01:55,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961908540] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:01:55,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422057398] [2025-03-16 15:01:55,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:55,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:01:55,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:01:55,036 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) [2025-03-16 15:01:55,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 15:01:55,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 278 statements into 1 equivalence classes. [2025-03-16 15:01:55,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 278 of 278 statements. [2025-03-16 15:01:55,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:55,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:55,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:01:55,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:01:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-03-16 15:01:55,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:01:55,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422057398] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:55,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:01:55,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-16 15:01:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822166460] [2025-03-16 15:01:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:55,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:55,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:55,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:55,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:01:55,193 INFO L87 Difference]: Start difference. First operand 31843 states and 36999 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2025-03-16 15:01:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:01:57,834 INFO L93 Difference]: Finished difference Result 62896 states and 73204 transitions. [2025-03-16 15:01:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:01:57,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 278 [2025-03-16 15:01:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:01:57,866 INFO L225 Difference]: With dead ends: 62896 [2025-03-16 15:01:57,866 INFO L226 Difference]: Without dead ends: 31841 [2025-03-16 15:01:57,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:01:57,880 INFO L435 NwaCegarLoop]: 1357 mSDtfsCounter, 1169 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:01:57,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1437 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-16 15:01:57,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31841 states. [2025-03-16 15:01:58,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31841 to 31840. [2025-03-16 15:01:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31840 states, 31839 states have (on average 1.1251609661107447) internal successors, (35824), 31839 states have internal predecessors, (35824), 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) [2025-03-16 15:01:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31840 states to 31840 states and 35824 transitions. [2025-03-16 15:01:58,135 INFO L78 Accepts]: Start accepts. Automaton has 31840 states and 35824 transitions. Word has length 278 [2025-03-16 15:01:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:01:58,137 INFO L471 AbstractCegarLoop]: Abstraction has 31840 states and 35824 transitions. [2025-03-16 15:01:58,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2025-03-16 15:01:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 31840 states and 35824 transitions. [2025-03-16 15:01:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2025-03-16 15:01:58,141 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:01:58,141 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:01:58,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 15:01:58,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 15:01:58,342 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:01:58,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:01:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash -328154045, now seen corresponding path program 1 times [2025-03-16 15:01:58,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:01:58,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092232573] [2025-03-16 15:01:58,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:01:58,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:01:58,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 328 statements into 1 equivalence classes. [2025-03-16 15:01:58,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 328 of 328 statements. [2025-03-16 15:01:58,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:01:58,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:01:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2025-03-16 15:01:58,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:01:58,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092232573] [2025-03-16 15:01:58,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092232573] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:01:58,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:01:58,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:01:58,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826632504] [2025-03-16 15:01:58,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:01:58,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:01:58,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:01:58,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:01:58,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:01:58,506 INFO L87 Difference]: Start difference. First operand 31840 states and 35824 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2025-03-16 15:02:01,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:02:01,266 INFO L93 Difference]: Finished difference Result 74705 states and 85292 transitions. [2025-03-16 15:02:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:02:01,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 328 [2025-03-16 15:02:01,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:02:01,309 INFO L225 Difference]: With dead ends: 74705 [2025-03-16 15:02:01,309 INFO L226 Difference]: Without dead ends: 43653 [2025-03-16 15:02:01,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:02:01,322 INFO L435 NwaCegarLoop]: 1798 mSDtfsCounter, 825 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 3260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:02:01,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1940 Invalid, 3260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 15:02:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43653 states. [2025-03-16 15:02:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43653 to 42862. [2025-03-16 15:02:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42862 states, 42861 states have (on average 1.1091668416509182) internal successors, (47540), 42861 states have internal predecessors, (47540), 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) [2025-03-16 15:02:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42862 states to 42862 states and 47540 transitions. [2025-03-16 15:02:01,652 INFO L78 Accepts]: Start accepts. Automaton has 42862 states and 47540 transitions. Word has length 328 [2025-03-16 15:02:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:02:01,652 INFO L471 AbstractCegarLoop]: Abstraction has 42862 states and 47540 transitions. [2025-03-16 15:02:01,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2025-03-16 15:02:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 42862 states and 47540 transitions. [2025-03-16 15:02:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2025-03-16 15:02:01,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:02:01,657 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:02:01,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 15:02:01,657 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:02:01,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:02:01,657 INFO L85 PathProgramCache]: Analyzing trace with hash 139523339, now seen corresponding path program 1 times [2025-03-16 15:02:01,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:02:01,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736657833] [2025-03-16 15:02:01,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:01,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:02:01,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 343 statements into 1 equivalence classes. [2025-03-16 15:02:01,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 343 of 343 statements. [2025-03-16 15:02:01,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:01,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 203 proven. 110 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-16 15:02:02,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:02:02,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736657833] [2025-03-16 15:02:02,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736657833] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:02:02,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38329520] [2025-03-16 15:02:02,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:02,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:02:02,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:02:02,299 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) [2025-03-16 15:02:02,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 15:02:02,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 343 statements into 1 equivalence classes. [2025-03-16 15:02:02,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 343 of 343 statements. [2025-03-16 15:02:02,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:02,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:02,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:02:02,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:02:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-03-16 15:02:02,508 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:02:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38329520] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:02:02,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:02:02,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-16 15:02:02,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526083550] [2025-03-16 15:02:02,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:02:02,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:02:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:02:02,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:02:02,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:02:02,510 INFO L87 Difference]: Start difference. First operand 42862 states and 47540 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2025-03-16 15:02:04,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:02:04,815 INFO L93 Difference]: Finished difference Result 84927 states and 94279 transitions. [2025-03-16 15:02:04,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:02:04,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 343 [2025-03-16 15:02:04,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:02:04,858 INFO L225 Difference]: With dead ends: 84927 [2025-03-16 15:02:04,858 INFO L226 Difference]: Without dead ends: 42853 [2025-03-16 15:02:04,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:02:04,883 INFO L435 NwaCegarLoop]: 673 mSDtfsCounter, 1073 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:02:04,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 797 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-16 15:02:04,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42853 states. [2025-03-16 15:02:05,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42853 to 42852. [2025-03-16 15:02:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42852 states, 42851 states have (on average 1.0797180929266528) internal successors, (46267), 42851 states have internal predecessors, (46267), 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) [2025-03-16 15:02:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42852 states to 42852 states and 46267 transitions. [2025-03-16 15:02:05,231 INFO L78 Accepts]: Start accepts. Automaton has 42852 states and 46267 transitions. Word has length 343 [2025-03-16 15:02:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:02:05,231 INFO L471 AbstractCegarLoop]: Abstraction has 42852 states and 46267 transitions. [2025-03-16 15:02:05,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2025-03-16 15:02:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 42852 states and 46267 transitions. [2025-03-16 15:02:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2025-03-16 15:02:05,236 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:02:05,236 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:02:05,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 15:02:05,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 15:02:05,436 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:02:05,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:02:05,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1247835943, now seen corresponding path program 1 times [2025-03-16 15:02:05,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:02:05,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156051350] [2025-03-16 15:02:05,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:05,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:02:05,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 385 statements into 1 equivalence classes. [2025-03-16 15:02:05,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 385 of 385 statements. [2025-03-16 15:02:05,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:05,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2025-03-16 15:02:05,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:02:05,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156051350] [2025-03-16 15:02:05,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156051350] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:02:05,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:02:05,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:02:05,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65123634] [2025-03-16 15:02:05,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:02:05,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:02:05,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:02:05,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:02:05,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:02:05,648 INFO L87 Difference]: Start difference. First operand 42852 states and 46267 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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) [2025-03-16 15:02:10,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:02:10,279 INFO L93 Difference]: Finished difference Result 147302 states and 159297 transitions. [2025-03-16 15:02:10,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:02:10,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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 385 [2025-03-16 15:02:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:02:10,391 INFO L225 Difference]: With dead ends: 147302 [2025-03-16 15:02:10,391 INFO L226 Difference]: Without dead ends: 105238 [2025-03-16 15:02:10,431 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 [2025-03-16 15:02:10,432 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 1712 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 5977 mSolverCounterSat, 1088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 7065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1088 IncrementalHoareTripleChecker+Valid, 5977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:02:10,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 736 Invalid, 7065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1088 Valid, 5977 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2025-03-16 15:02:10,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105238 states. [2025-03-16 15:02:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105238 to 102742. [2025-03-16 15:02:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102742 states, 102741 states have (on average 1.072424835265376) internal successors, (110182), 102741 states have internal predecessors, (110182), 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) [2025-03-16 15:02:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102742 states to 102742 states and 110182 transitions. [2025-03-16 15:02:11,386 INFO L78 Accepts]: Start accepts. Automaton has 102742 states and 110182 transitions. Word has length 385 [2025-03-16 15:02:11,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:02:11,386 INFO L471 AbstractCegarLoop]: Abstraction has 102742 states and 110182 transitions. [2025-03-16 15:02:11,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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) [2025-03-16 15:02:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 102742 states and 110182 transitions. [2025-03-16 15:02:11,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2025-03-16 15:02:11,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:02:11,392 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:02:11,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 15:02:11,392 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:02:11,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:02:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1076624228, now seen corresponding path program 1 times [2025-03-16 15:02:11,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:02:11,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549014072] [2025-03-16 15:02:11,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:02:11,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 428 statements into 1 equivalence classes. [2025-03-16 15:02:11,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 428 of 428 statements. [2025-03-16 15:02:11,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:11,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 372 proven. 110 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2025-03-16 15:02:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:02:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549014072] [2025-03-16 15:02:12,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549014072] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:02:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996111510] [2025-03-16 15:02:12,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:12,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:02:12,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:02:12,131 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) [2025-03-16 15:02:12,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 15:02:12,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 428 statements into 1 equivalence classes. [2025-03-16 15:02:12,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 428 of 428 statements. [2025-03-16 15:02:12,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:12,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:12,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:02:12,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:02:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2025-03-16 15:02:12,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:02:12,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996111510] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:02:12,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:02:12,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-16 15:02:12,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267987592] [2025-03-16 15:02:12,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:02:12,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:02:12,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:02:12,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:02:12,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:02:12,276 INFO L87 Difference]: Start difference. First operand 102742 states and 110182 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2025-03-16 15:02:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:02:14,876 INFO L93 Difference]: Finished difference Result 206271 states and 221158 transitions. [2025-03-16 15:02:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:02:14,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 428 [2025-03-16 15:02:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:02:14,985 INFO L225 Difference]: With dead ends: 206271 [2025-03-16 15:02:14,985 INFO L226 Difference]: Without dead ends: 104317 [2025-03-16 15:02:15,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:02:15,043 INFO L435 NwaCegarLoop]: 1382 mSDtfsCounter, 1001 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:02:15,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1465 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-16 15:02:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104317 states. [2025-03-16 15:02:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104317 to 102729. [2025-03-16 15:02:15,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102729 states, 102728 states have (on average 1.0601004594657737) internal successors, (108902), 102728 states have internal predecessors, (108902), 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) [2025-03-16 15:02:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102729 states to 102729 states and 108902 transitions. [2025-03-16 15:02:16,095 INFO L78 Accepts]: Start accepts. Automaton has 102729 states and 108902 transitions. Word has length 428 [2025-03-16 15:02:16,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:02:16,096 INFO L471 AbstractCegarLoop]: Abstraction has 102729 states and 108902 transitions. [2025-03-16 15:02:16,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2025-03-16 15:02:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 102729 states and 108902 transitions. [2025-03-16 15:02:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2025-03-16 15:02:16,104 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:02:16,104 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:02:16,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 15:02:16,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:02:16,304 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:02:16,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:02:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1696361107, now seen corresponding path program 1 times [2025-03-16 15:02:16,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:02:16,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466644760] [2025-03-16 15:02:16,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:02:16,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 446 statements into 1 equivalence classes. [2025-03-16 15:02:16,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 446 of 446 statements. [2025-03-16 15:02:16,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:16,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 408 proven. 110 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2025-03-16 15:02:17,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:02:17,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466644760] [2025-03-16 15:02:17,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466644760] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:02:17,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735745030] [2025-03-16 15:02:17,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:17,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:02:17,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:02:17,180 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) [2025-03-16 15:02:17,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 15:02:17,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 446 statements into 1 equivalence classes. [2025-03-16 15:02:17,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 446 of 446 statements. [2025-03-16 15:02:17,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:17,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:17,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:02:17,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:02:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2025-03-16 15:02:17,385 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:02:17,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735745030] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:02:17,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:02:17,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-16 15:02:17,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221255416] [2025-03-16 15:02:17,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:02:17,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:02:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:02:17,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:02:17,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:02:17,387 INFO L87 Difference]: Start difference. First operand 102729 states and 108902 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2025-03-16 15:02:20,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:02:20,257 INFO L93 Difference]: Finished difference Result 229866 states and 244828 transitions. [2025-03-16 15:02:20,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:02:20,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 446 [2025-03-16 15:02:20,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:02:20,417 INFO L225 Difference]: With dead ends: 229866 [2025-03-16 15:02:20,417 INFO L226 Difference]: Without dead ends: 127925 [2025-03-16 15:02:20,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:02:20,491 INFO L435 NwaCegarLoop]: 1624 mSDtfsCounter, 859 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:02:20,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1743 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-16 15:02:20,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127925 states. [2025-03-16 15:02:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127925 to 125551. [2025-03-16 15:02:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125551 states, 125550 states have (on average 1.0629868578255675) internal successors, (133458), 125550 states have internal predecessors, (133458), 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) [2025-03-16 15:02:21,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125551 states to 125551 states and 133458 transitions. [2025-03-16 15:02:21,977 INFO L78 Accepts]: Start accepts. Automaton has 125551 states and 133458 transitions. Word has length 446 [2025-03-16 15:02:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:02:21,978 INFO L471 AbstractCegarLoop]: Abstraction has 125551 states and 133458 transitions. [2025-03-16 15:02:21,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2025-03-16 15:02:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 125551 states and 133458 transitions. [2025-03-16 15:02:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2025-03-16 15:02:21,989 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:02:21,989 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:02:21,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 15:02:22,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-16 15:02:22,190 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:02:22,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:02:22,190 INFO L85 PathProgramCache]: Analyzing trace with hash 552787083, now seen corresponding path program 1 times [2025-03-16 15:02:22,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:02:22,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485908196] [2025-03-16 15:02:22,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:22,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:02:22,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-16 15:02:22,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-16 15:02:22,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:22,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 475 proven. 113 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2025-03-16 15:02:23,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:02:23,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485908196] [2025-03-16 15:02:23,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485908196] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:02:23,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287480508] [2025-03-16 15:02:23,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:23,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:02:23,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:02:23,197 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) [2025-03-16 15:02:23,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 15:02:23,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-16 15:02:23,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-16 15:02:23,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:23,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:23,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:02:23,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:02:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2025-03-16 15:02:23,517 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:02:23,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287480508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:02:23,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:02:23,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-16 15:02:23,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550276510] [2025-03-16 15:02:23,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:02:23,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:02:23,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:02:23,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:02:23,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-16 15:02:23,518 INFO L87 Difference]: Start difference. First operand 125551 states and 133458 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2025-03-16 15:02:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:02:26,614 INFO L93 Difference]: Finished difference Result 251871 states and 268079 transitions. [2025-03-16 15:02:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:02:26,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 481 [2025-03-16 15:02:26,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:02:26,781 INFO L225 Difference]: With dead ends: 251871 [2025-03-16 15:02:26,781 INFO L226 Difference]: Without dead ends: 142071 [2025-03-16 15:02:26,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-16 15:02:26,854 INFO L435 NwaCegarLoop]: 1697 mSDtfsCounter, 804 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:02:26,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1823 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 15:02:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142071 states. [2025-03-16 15:02:28,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142071 to 133412. [2025-03-16 15:02:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133412 states, 133411 states have (on average 1.060010044149283) internal successors, (141417), 133411 states have internal predecessors, (141417), 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) [2025-03-16 15:02:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133412 states to 133412 states and 141417 transitions. [2025-03-16 15:02:28,407 INFO L78 Accepts]: Start accepts. Automaton has 133412 states and 141417 transitions. Word has length 481 [2025-03-16 15:02:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:02:28,407 INFO L471 AbstractCegarLoop]: Abstraction has 133412 states and 141417 transitions. [2025-03-16 15:02:28,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2025-03-16 15:02:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 133412 states and 141417 transitions. [2025-03-16 15:02:28,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2025-03-16 15:02:28,418 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:02:28,418 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:02:28,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 15:02:28,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 15:02:28,619 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:02:28,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:02:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1276124701, now seen corresponding path program 1 times [2025-03-16 15:02:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:02:28,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948995711] [2025-03-16 15:02:28,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:02:28,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-03-16 15:02:28,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-03-16 15:02:28,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:28,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 473 proven. 113 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2025-03-16 15:02:29,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:02:29,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948995711] [2025-03-16 15:02:29,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948995711] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:02:29,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055726745] [2025-03-16 15:02:29,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:29,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:02:29,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:02:29,763 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) [2025-03-16 15:02:29,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 15:02:29,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 483 statements into 1 equivalence classes. [2025-03-16 15:02:29,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 483 of 483 statements. [2025-03-16 15:02:29,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:29,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:29,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:02:29,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:02:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2025-03-16 15:02:29,998 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:02:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055726745] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:02:29,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:02:29,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-16 15:02:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076581622] [2025-03-16 15:02:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:02:29,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:02:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:02:29,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:02:29,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-16 15:02:29,999 INFO L87 Difference]: Start difference. First operand 133412 states and 141417 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2025-03-16 15:02:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:02:32,516 INFO L93 Difference]: Finished difference Result 264463 states and 280345 transitions. [2025-03-16 15:02:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:02:32,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 483 [2025-03-16 15:02:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:02:32,686 INFO L225 Difference]: With dead ends: 264463 [2025-03-16 15:02:32,686 INFO L226 Difference]: Without dead ends: 135775 [2025-03-16 15:02:32,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-16 15:02:32,763 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 977 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 15:02:32,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 482 Invalid, 3027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 15:02:32,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135775 states. [2025-03-16 15:02:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135775 to 133397. [2025-03-16 15:02:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133397 states, 133396 states have (on average 1.0510659989804791) internal successors, (140208), 133396 states have internal predecessors, (140208), 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) [2025-03-16 15:02:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133397 states to 133397 states and 140208 transitions. [2025-03-16 15:02:34,342 INFO L78 Accepts]: Start accepts. Automaton has 133397 states and 140208 transitions. Word has length 483 [2025-03-16 15:02:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:02:34,342 INFO L471 AbstractCegarLoop]: Abstraction has 133397 states and 140208 transitions. [2025-03-16 15:02:34,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2025-03-16 15:02:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 133397 states and 140208 transitions. [2025-03-16 15:02:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2025-03-16 15:02:34,351 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:02:34,351 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:02:34,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 15:02:34,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-16 15:02:34,551 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:02:34,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:02:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1301729534, now seen corresponding path program 1 times [2025-03-16 15:02:34,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:02:34,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339211826] [2025-03-16 15:02:34,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:34,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:02:34,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 504 statements into 1 equivalence classes. [2025-03-16 15:02:34,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 504 of 504 statements. [2025-03-16 15:02:34,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:34,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2025-03-16 15:02:34,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:02:34,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339211826] [2025-03-16 15:02:34,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339211826] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:02:34,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:02:34,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:02:34,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436495126] [2025-03-16 15:02:34,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:02:34,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:02:34,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:02:34,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:02:34,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:02:34,885 INFO L87 Difference]: Start difference. First operand 133397 states and 140208 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2025-03-16 15:02:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:02:37,474 INFO L93 Difference]: Finished difference Result 260468 states and 274490 transitions. [2025-03-16 15:02:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:02:37,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 504 [2025-03-16 15:02:37,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:02:37,635 INFO L225 Difference]: With dead ends: 260468 [2025-03-16 15:02:37,635 INFO L226 Difference]: Without dead ends: 142818 [2025-03-16 15:02:37,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:02:37,707 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 1174 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:02:37,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 343 Invalid, 3039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-16 15:02:37,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142818 states. [2025-03-16 15:02:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142818 to 142031. [2025-03-16 15:02:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142031 states, 142030 states have (on average 1.048968527775822) internal successors, (148985), 142030 states have internal predecessors, (148985), 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) [2025-03-16 15:02:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142031 states to 142031 states and 148985 transitions. [2025-03-16 15:02:39,312 INFO L78 Accepts]: Start accepts. Automaton has 142031 states and 148985 transitions. Word has length 504 [2025-03-16 15:02:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:02:39,312 INFO L471 AbstractCegarLoop]: Abstraction has 142031 states and 148985 transitions. [2025-03-16 15:02:39,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2025-03-16 15:02:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 142031 states and 148985 transitions. [2025-03-16 15:02:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2025-03-16 15:02:39,323 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:02:39,323 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:02:39,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 15:02:39,323 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:02:39,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:02:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1331463725, now seen corresponding path program 1 times [2025-03-16 15:02:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:02:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304436570] [2025-03-16 15:02:39,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:02:39,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 545 statements into 1 equivalence classes. [2025-03-16 15:02:39,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 545 of 545 statements. [2025-03-16 15:02:39,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:39,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 734 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2025-03-16 15:02:39,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:02:39,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304436570] [2025-03-16 15:02:39,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304436570] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:02:39,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:02:39,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:02:39,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690583367] [2025-03-16 15:02:39,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:02:39,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:02:39,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:02:39,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:02:39,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:02:39,529 INFO L87 Difference]: Start difference. First operand 142031 states and 148985 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2025-03-16 15:02:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:02:41,853 INFO L93 Difference]: Finished difference Result 269108 states and 282670 transitions. [2025-03-16 15:02:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:02:41,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 545 [2025-03-16 15:02:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:02:41,999 INFO L225 Difference]: With dead ends: 269108 [2025-03-16 15:02:41,999 INFO L226 Difference]: Without dead ends: 142824 [2025-03-16 15:02:42,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:02:42,075 INFO L435 NwaCegarLoop]: 1745 mSDtfsCounter, 722 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 15:02:42,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1870 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 15:02:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142824 states. [2025-03-16 15:02:43,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142824 to 142819. [2025-03-16 15:02:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142819 states, 142818 states have (on average 1.048978420087104) internal successors, (149813), 142818 states have internal predecessors, (149813), 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) [2025-03-16 15:02:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142819 states to 142819 states and 149813 transitions. [2025-03-16 15:02:43,920 INFO L78 Accepts]: Start accepts. Automaton has 142819 states and 149813 transitions. Word has length 545 [2025-03-16 15:02:43,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:02:43,920 INFO L471 AbstractCegarLoop]: Abstraction has 142819 states and 149813 transitions. [2025-03-16 15:02:43,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2025-03-16 15:02:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 142819 states and 149813 transitions. [2025-03-16 15:02:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2025-03-16 15:02:43,934 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:02:43,935 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:02:43,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 15:02:43,935 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:02:43,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:02:43,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1699943972, now seen corresponding path program 1 times [2025-03-16 15:02:43,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:02:43,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568028045] [2025-03-16 15:02:43,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:02:43,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:02:43,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 547 statements into 1 equivalence classes. [2025-03-16 15:02:44,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 547 of 547 statements. [2025-03-16 15:02:44,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:02:44,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:02:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2025-03-16 15:02:44,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:02:44,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568028045] [2025-03-16 15:02:44,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568028045] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:02:44,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:02:44,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:02:44,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466940002] [2025-03-16 15:02:44,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:02:44,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:02:44,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:02:44,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:02:44,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:02:44,531 INFO L87 Difference]: Start difference. First operand 142819 states and 149813 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 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)